Pacific Southwest Airlines

Pacific Southwest Airlines

Company type	Public
Industry	Airline
Founded	May 6, 1949 (1949-05-06) in San Diego, California, United States
Founder	Kenny Friedkin
Defunct	1988
Fate	Merged with USAir
Headquarters	San Diego , United States
Area served	United States, Mexico (after 1978)
Key people	Kenny Friedkin (founder), J. Floyd Andrews (co-founder and later leader)
Products	Passenger air transportation
Parent	USAir (from 1987)

Pacific Southwest Airlines (PSA) was an innovative low-cost airline based in San Diego, California, operating within the United States from 1949 until 1988. Recognized as the first major scheduled budget carrier, PSA promoted itself as "The World's Friendliest Airline," featuring its signature smiling face artwork on the front of its planes, commonly referred to as the PSA Grinningbirds. The Los Angeles Times once described PSA as "virtually the unofficial flag carrier of California for nearly four decades."

Throughout much of its existence, PSA functioned primarily as a California intrastate airline, pioneering a business approach that later inspired Southwest Airlines in Texas. After the passage of the Airline Deregulation Act in 1978, PSA expanded its routes beyond California to cover additional western states and destinations in Mexico. Despite this growth, PSA's financial results after deregulation did not match those of competitors such as Southwest and fellow California-based carrier AirCal.

In 1986, PSA entered into an acquisition agreement with USAir, which finalized the merger in 1987 and fully absorbed PSA by 1988. This transaction broadened USAir's network on the West Coast; however, by 1991 USAir had largely withdrawn from California due to fierce fare competition driven by Southwest's expansion. Presently, the PSA brand survives under American Airlines Group through its regional affiliate, PSA Airlines. Although PSA ceased independent operations shortly after deregulation, its market approach and influence persist through Southwest’s continued prominence.

Founding and initial rivalry

PSA was established from Friedkin Aeronautics, a San Diego flight school created by entrepreneur Kenny Friedkin to train returning military personnel. When demand from veterans decreased, Friedkin launched the airline on May 6, 1949, offering weekly flights from San Diego to Oakland via Burbank using a leased Douglas DC-3 aircraft at a monthly lease cost of $1,000. Leveraging experience from a previous enterprise (Friedkin Airlines), reservations were initially managed out of a converted WWII latrine used as a ticket office. Early fares were set at $9.99 for travel between Burbank and Oakland. By July 1951, PSA expanded service to San Francisco; Oakland service was discontinued in 1954 but reinstated in 1965. The company’s fleet never exceeded four DC-3 planes.

Among eight intrastate airlines launched in California between January 1949 and January 1950, only PSA and California Central Airlines (CCA) remained operational beyond their first year. CCA, which operated larger Martin 2-0-2 aircraft, continued until declaring bankruptcy in February 1955. PSA concentrated solely on the San Diego–Bay Area corridor, which contributed significantly to its survival. During CCA's bankruptcy proceedings, PSA attempted to purchase the airline but was outbid by a group including Allegheny Airlines and Southwest Airways (not affiliated with today's Southwest Airlines); this group promptly ceased CCA operations, leaving PSA as the only intrastate competitor.

Annual passenger numbers for California Central Airlines and Pacific Southwest Airlines, 1949–1954

Passengers	1949	1950	1951	1952	1953	1954
California Central Airlines	73,487	93,045	145,101	190,187	148,091	162,012
Pacific Southwest Airlines	15,011	45,390	75,995	92,484	115,028	102,124

Enhanced fleet and growth

In 1955, PSA transitioned from DC-3 aircraft to four Douglas DC-4 planes, modifying the windows with painted rectangles to mimic the appearance of the more advanced Douglas DC-6. By January 1958, PSA operated 37 weekly DC-4 flights connecting Burbank and San Francisco, with 29 of those originating from San Diego, alongside four nonstop flights between San Diego and San Francisco. Meanwhile, competitors such as United Airlines, Western Airlines, and TWA offered a combined total of 241 nonstop flights weekly between Los Angeles and San Francisco, plus an additional 49 from Burbank, with coach fares starting at $13.50 and First Class tickets up to $22.05 (excluding a 5% federal excise tax). In July 1958, PSA shifted some services from Burbank to Los Angeles International Airport (LAX), transporting 296,000 passengers during that year.

Toward the end of 1959, PSA introduced the 92-seat Lockheed Electra turboprop aircraft featuring six-seat lounge areas, replacing its fleet of 70-seat DC-4s. By 1963, PSA operated six Electras and had become the leading carrier for passenger traffic between the Bay Area and Los Angeles. The number of passengers increased significantly from 355,000 in 1959 to 1.3 million in 1963, eventually surpassing 5.1 million by 1970.

Transition to public ownership

Kenny Friedkin, PSA’s founder, passed away in March 1962 at age 47, shortly after the airline had expanded its fleet to five aircraft. His co-founder J. Floyd Andrews took over leadership during a phase marked by heightened national recognition, a distinctive brand identity, and dominance within California’s intrastate market—although later financial difficulties arose due to aggressive expansion.

PSA became a publicly traded company on February 14, 1963, issuing 313,000 shares priced at $19 each. Prior to going public, PSA consolidated its previously complex corporate structure—where aircraft were held under three separate founder-controlled entities—into one unified company in January 1962. Despite operating only five Electras seating 98 passengers each at that time, PSA ranked second in passenger market share in San Francisco and fifth in Los Angeles. The airline’s business strategy focused on rapid 20-minute aircraft turnarounds combined with no-frills service. For the nine-month period ending September 30, 1962, PSA reported profits exceeding $1 million amid competitive $13.50 fares on the Los Angeles–San Francisco route. Passenger count on this route grew from 642,000 to 937,000 year-over-year.

Pacific Southwest Airlines Financial Performance, 1955–1965

(USD thousands)	1955	1956	1957	1958	1959	1960	1961	1962	1963	1964	1965
Operating revenue	1,588	2,265	3,126	3,930	4,776	8,130	10,300	14,205	17,852	20,773	24,015
Operating profit	64	120	399	663	909	21	1,127	3,402	4,952	5,946	4,410
Net income	244	59	197	322	456	0	310	1,369	2,252	2,946	2,035
Operating margin	4.1%	5.3%	12.8%	16.9%	19.0%	0.3%	10.9%	23.9%	27.7%	28.6%	18.4%
Net margin	15.4%	2.6%	6.3%	8.2%	9.5%	0.0%	3.0%	9.6%	12.6%	14.2%	8.5%

Regulation under CPUC: 1965–1978

Prior to 1965, PSA operated exclusively within California as an intrastate carrier subject only to price regulation by the California Public Utilities Commission (CPUC). The federal Civil Aeronautics Board (CAB) did not regulate intrastate routes; however, operational oversight was maintained by the FAA. Beginning September 17, 1965, the CPUC assumed broader authority over intrastate airlines’ economic certification processes as well as control over route approvals and service standards. PSA welcomed this regulatory shift anticipating increased market stability following the departure of several new competitors such as Paradise Airlines. Nonetheless, the CPUC soon imposed restrictions similar to those of the CAB by approving only two intrastate carriers—Air California and Holiday Airlines—and requiring PSA to obtain CPUC authorization for all new routes while competing against Air California for market access.

Air California and Missed Expansion Opportunity

Between 1949 and 1965, PSA’s service area was confined to five airports: San Diego, Los Angeles (LAX), Burbank, San Francisco, and Oakland. When Orange County Airport (which later became John Wayne Airport) inaugurated a new runway in 1965 and extended an invitation to PSA, the airline opted not to expand there. This choice enabled Air California to establish dominance in the rapidly expanding Orange County region—where the population surged from 700,000 in 1960 to 1.4 million by 1970—benefiting from CPUC policies that supported Air California’s viability and restricted competition with PSA.

PSA made two attempts to acquire Air California:

• In December 1969, PSA reached an agreement to merge with the financially troubled Air California but retracted the offer in May 1970 due to delays in CPUC approval; soon after, San Diego businessman C. Arnholt Smith took control of Air California through Westgate-California Corporation (WCC).
• In 1972, PSA negotiated to purchase WCC’s controlling interest in Air California. Although the CPUC approved the deal despite opposition, the Department of Justice filed a lawsuit to prevent the merger, citing PSA’s commanding 70% share of the intrastate market compared to Air California’s 11%. After a protracted delay and revelations of financial irregularities during audits of Air California—triggering a scandal involving Smith and WCC—PSA ultimately abandoned the acquisition plan.

This case highlights PSA’s failure to capitalize on a critical strategic opportunity to broaden its market presence and strengthen its position within California’s intrastate airline sector amid regulatory limitations that influenced competitive behavior.

Fleet Developments in the 1960s and 1970s

Throughout the 1960s and 1970s, PSA’s aircraft lineup underwent considerable transformation aligned with its growth objectives and market expansion efforts. The company started the decade operating Lockheed Electras before introducing Boeing 727-100 jets in 1965, marking its transition into jet-powered service. By 1968, PSA had fully shifted to jet aircraft, retiring all Electras. To meet rising passenger demand and counter competition, PSA phased out its smaller 727-100s in favor of larger Boeing 727-200 models and incorporated Boeing 737-200s into its fleet by 1969. At the start of the 1970s, PSA operated one Boeing 727-100, sixteen Boeing 727-200s, and nine Boeing 737s.

In addition to its main fleet, PSA briefly utilized DC-9 aircraft during the late ’60s primarily for pilot training services offered externally. The airline also trialed Lockheed L-1011 TriStars between 1974 and 1975 but discontinued its smaller Boeing 737 fleet by 1976. To continue serving specialized markets such as South Lake Tahoe—where airport limitations required specific aircraft types—PSA reintroduced Electras in 1975. During this time, PSA concentrated on expanding its Boeing 727 inventory by acquiring both new and pre-owned planes to improve operational efficiency.

PSA’s entry into the South Lake Tahoe market occurred following Holiday Airlines’ collapse in early 1975. Due to Holiday’s limited route coverage and financial instability, PSA sought regulatory approval from the California Public Utilities Commission (CPUC) to take over these routes. The CPUC required both PSA and Air California to operate Electras on Tahoe services because of airport restrictions. However, after airline deregulation in 1979, PSA withdrew from this market citing the prohibitive costs associated with maintaining Electras alongside a predominantly Boeing jet fleet.

A significant regulatory milestone came in 1967 when PSA received permission to utilize offshore airway V25 en route to San Diego despite operating solely within intrastate boundaries, enhancing network connectivity.

This era exemplifies PSA’s dynamic approach toward modernizing its fleet while strategically expanding within California’s competitive airline landscape.

Proposed Merger with Western Air Lines

In December 1968, PSA's founder, J. Floyd Andrews, made an ambitious attempt to acquire Western Air Lines, a carrier generating revenue four times greater than PSA's and regulated by the Civil Aeronautics Board (CAB). The merger faced regulatory complications due to differing oversight agencies. By April 1969, PSA withdrew its proposal, citing Western's deteriorating financial condition and the significant influence of Kerkorian on its board. Following this, PSA redirected its efforts toward acquisitions outside the airline sector.

Southwest Airlines

Established in 1967, Southwest Airlines commenced flights in 1971 after overcoming legal obstacles. Founder Rollin King and president Lamar Muse openly acknowledged that Southwest’s business approach and operational procedures were modeled after PSA’s framework. The two carriers maintained reciprocal equity stakes: by 1978, Southwest executives owned 6% of PSA shares, while PSA’s management held 10% of Southwest’s stock, exemplifying strategic cooperation within their regional domains.

Challenges in Diversification and Widebody Aircraft Investments

In 1968, PSA purchased Valcar, a West Coast rental car firm previously affiliated with Hertz; however, it ceased operations by 1971 due to unsuccessful integration efforts. Between 1969 and 1971, PSA ventured into the hospitality industry by acquiring several hotels that were not located near airports nor aligned with its budget travel focus. These initiatives underperformed significantly; CEO Andrews later described them as "a complete flop," leading to divestment and transfer of management responsibilities to Hyatt by 1974. The San Franciscan hotel was sold in 1979, though the Queen Mary property remained unsold for an extended period.

PSA also entered the radio broadcasting market in 1970 but divested its four stations by 1975. In 1973, it established a holding entity, PSA, Inc., to consolidate both its airline and non-airline businesses.

In 1970, PSA placed an order for five Lockheed L-1011 widebody aircraft, with deliveries commencing in 1972. Engine delays caused by Rolls-Royce’s bankruptcy and Lockheed’s subsequent government bailout led PSA to initially cancel but later reinstate the order. The L-1011s proved unsuitable for PSA’s rapid turnaround model because their per-seat operating costs were comparable to those of smaller planes. After operating two L-1011s for eight months, PSA grounded them and rejected delivery of the remaining three units, resulting in expensive leases and extended legal disputes with Lockheed.

By 1975, losses from diversification efforts combined with L-1011-related expenses brought PSA close to insolvency. Operating deficits from rental car services, radio stations, and hotels amounted to nearly $9 million through 1974; ongoing losses from discontinued ventures and the L-1011 fleet added another $19 million through 1977. Additional L-1011-related financial burdens continued into 1982 as PSA struggled to deploy these aircraft effectively.

These fiscal difficulties attracted public attention. PSA petitioned the California Public Utilities Commission (CPUC) for fare increases, which prompted sharp criticism of management’s capabilities and scrutiny over an $8 million share repurchase completed in 1974. In March 1976, Andrews stepped down as CEO and resigned from the board in May amid initiatives aimed at restoring financial stability.

Escaping CPUC Oversight

During debates over airline deregulation, California maintained comparatively low fares regulated by the CPUC, contrasting with states like Texas where airlines independently set prices. California lawmakers, including Governor Jerry Brown, attempted to preserve CPUC jurisdiction over airlines conducting more than half their business within the state; however, this proposal narrowly failed in a House subcommittee vote. Deregulation included strong Federal preemption, significantly limiting state regulatory authority over federally certified carriers.

At that time, the CPUC had evolved into a cumbersome regulatory body that delayed rulings for years and exerted considerable influence over intrastate carriers in California. PSA was regarded as the most efficient airline under this regime, with CPUC-approved fares designed to optimize its profitability and compel competitors to follow suit. In hindsight, PSA regretted supporting the 1965 legislation that granted such powers to the CPUC. Following the Airline Deregulation Act, PSA’s expansion into Nevada in December 1978 released it from CPUC control. Although the CPUC challenged deregulation in federal court, it was unsuccessful at both trial and appellate levels.

Flight 182

In September 1978, just before deregulation took effect, PSA experienced a devastating accident when one of its 727 jets collided mid-air with a smaller aircraft over San Diego. The collision resulted in fatalities for everyone aboard both planes, as well as casualties on the ground. The tragedy was intensified by several factors:

• Among the 135 individuals on board, 37 were PSA employees traveling as deadheads.
• San Diego served as PSA’s headquarters and primary base of operations.
• The flight crew failed to maintain adequate situational awareness regarding the smaller plane.

This catastrophe had a profound effect on PSA’s reputation and operational priorities during a pivotal period of expansion.

Harold Simmons

Toward the end of 1978, corporate raider Harold Simmons secured a 20% ownership stake in PSA. He questioned PSA’s assertion of three decades of consistent success by pointing out the airline’s declining profitability throughout the 1970s despite revenue growth. While PSA emphasized recent leadership changes, Simmons adopted a stance focused on capitalizing financially from a potential acquisition rather than dismantling the company. In response, PSA narrowly thwarted Simmons’ influence by postponing the shareholder record date to restrict his voting rights, which led to legal confrontations. Ultimately, PSA resolved the dispute by trading aircraft assets in exchange for Simmons’ shares. Despite the Flight 182 disaster, PSA’s financial performance in 1978 showed some improvement, partly due to accounting adjustments.

PSA on the brink of deregulation

As deregulation loomed, both PSA management and financial markets expected favorable developments. In December 1978, COO (and future CEO) Paul Barkley forecasted a gradual transition instead of intense competition, attributing this to limited aircraft availability constraining passenger capacity and discount pricing. He anticipated that restricted capacity would persist into the mid-1980s, resulting in a more stable industry environment with less aggressive rivalry due to aircraft supply constraints.

Pacific Southwest Airlines⁽¹⁾ Financial Results, 1979–1986

(1) Airline operations only; excludes holding company and subsidiaries

(USD mm)	1979	1980	1981	1982	1983	1984	1985	1986
Operating revenue	293.0	301.6	335.2	378.1	443.9	505.4	582.8	694.1
Operating profit (loss)	35.5	2.6	(16.0)	(17.4)	(10.0)	31.0	31.9	23.0
Net profit (loss)	23.1	4.2	22.7	18.6	(12.6)	(4.8)	(0.6)	(3.1)
Operating margin	12.1%	0.9%	-4.8%	-4.6%	-2.3%	6.1%	5.5%	3.3%
Net margin	7.9%	1.4%	6.8%	4.9%	-2.8%	-0.9%	-0.1%	-0.4%

Striking out in Texas

Braniff International Airways, headquartered in Dallas-Fort Worth and led by longtime CEO Harding Lawrence, became the first major U.S. trunk airline to fail following deregulation, declaring bankruptcy and ceasing operations in May 1982 after an aggressive expansion strategy post-deregulation failed to sustain profitability. This event marked a watershed moment in airline financial history since no carrier had previously emerged successfully from Chapter 11 bankruptcy until Continental Airlines did so in 1983.

In October of that year, PSA proposed a low-risk expansion approach by contracting Braniff to operate between twenty-five and thirty Boeing 727 aircraft under PSA branding while employing roughly 1,500 Braniff employees under revised labor agreements. This arrangement aimed to capitalize on Braniff’s valuable takeoff and landing slots—key competitive assets due to FAA slot restrictions implemented after the air traffic controllers strike of 1981. However, the initial plan fell apart when Braniff pilots rejected reduced seniority compared to their PSA counterparts, reflecting underlying labor tensions and brand identity conflicts between the two airlines.

PSA then explored establishing a new Texas-based carrier leasing Braniff planes and personnel with financial support from Braniff itself; however, FAA rulings clarified that only Braniff retained rights to its slots—not any new entity leasing its assets—forcing termination of this plan in March 1983. A second iteration of Braniff launched in 1984 without PSA backing but struggled amid competition from Southwest Airlines’ westward push, American Airlines’ Dallas-Fort Worth hub presence, and Continental’s post-bankruptcy cost advantages.

Meanwhile, despite operational losses in fiscal years 1981–82, PSA maintained profitability through strategic asset sales and tax credit transactions, demonstrating a business model focused more on asset management than solely on passenger revenue generation.

Underwhelming Results Following Deregulation

Prior to deregulation, Pacific Southwest Airlines (PSA) planned to extend its reach beyond California and anticipated considerable advantages. Nevertheless, PSA’s performance lagged behind that of its rivals. Between 1978 and 1985, AirCal’s revenue increased at more than twice the rate of PSA’s, Southwest Airlines nearly tripled its income, and Piedmont Airlines—previously smaller than PSA—expanded to over twice PSA’s size while consistently generating profits throughout the deregulation period.

Growth in Operating Revenue from 1978 to 1985 for Selected Airlines⁽¹⁾

(USD millions)	1978	1985	Growth Multiple
Pacific Southwest Airlines	229.8	582.8	2.54x
AirCal	67.6	344.5	5.10x
Piedmont Airlines	205.6	1,366.6	6.65x
Southwest Airlines	81.1	606.1(2)	7.48x

Following deregulation, PSA encountered difficulties and frequently postponed important strategic decisions such as replacing its fuel-intensive Boeing 727 fleet. A proposed acquisition of Braniff would have increased the number of 727s, which were expensive to operate due to high fuel consumption and labor demands compared to newer models like the MD-80. To address fleet modernization, PSA placed an order in late 1983 for twenty BAe-146 jets—smaller, quieter aircraft designed to comply with noise restrictions at California airports—but these planes were outfitted with only 85 seats, fewer than competitors’ configurations, thereby limiting revenue capacity. Additionally, PSA purchased four pre-owned DC-9 aircraft in 1983 but failed to implement a cohesive fleet strategy.

The airline’s leadership continuity may have hindered adaptability: William Shimp served as CEO from 1976 until 1984 after joining the company in 1949; his successor, Paul Barkley, had been part of the executive team since 1967. Despite operational challenges, PSA continued diversifying its business through subsidiaries engaged in energy sectors (fuel supply and oil and gas exploration) and aviation-related services (engine maintenance, leasing, and pilot training). This diversification diverted attention from core airline activities, as highlighted in the company’s 1983 annual report.

Employee Concessions, Formation of PS Group, Acquisition by USAir, and Flight 1771 Incident

In response to a difficult financial year in 1983, PSA sought employee concessions in 1984 involving a wage reduction of 15% combined with a share of pre-tax airline profits amounting to 15%, alongside a corresponding equity interest of 15% in the airline entity itself (distinct from the holding company PS Group, Inc., which encompassed aircraft leasing and fuel distribution operations). Employees consented late that year and appointed four representatives to the airline’s board of directors, including prominent retailer Sol Price. Subsequently, on July 28, 1986, PSA launched a separate publicly traded stock for the airline division through an initial public offering of 1.8 million shares priced at $7 each. To clarify corporate structure amid ongoing diversification—which included new oil and gas investments added in 1985—the parent company was renamed "PS Group, Inc."

The airline industry experienced significant consolidation in 1986 with mergers such as Republic Airlines merging into Northwest Airlines among others. In December of that year, USAir agreed to purchase PSA for $400 million with the goal of strengthening its foothold in California where its presence was previously limited. The transaction was finalized on May 29, 1987; however, conflicts with pilot unions delayed full operational integration until April 9, 1988.

During this transitional period, on December 7, 1987, PSA Flight 1771 crashed after a terminated USAir employee gained unauthorized access using stolen credentials and fatally shot crew members and passengers onboard before causing the crash. This event marked the final chapter for PSA before its merger into USAir.

Proceeds from the sale were already secured by PS Group leadership and used to finance new ventures for executives including Chairman Paul Barkley. The group reinvested funds from the PSA transaction into travel agency businesses alongside its existing aircraft leasing and energy operations to support continued expansion and diversification efforts.

Legacy

Following the mergers, successors such as PSA and AirCal, along with USAir and American Airlines, increased ticket prices to offset rising expenses. In early 1990, a last-minute roundtrip fare between Los Angeles and Sacramento reached $456, equivalent to over $1000 in 2024 dollars. State lawmakers introduced legislation aimed at penalizing airlines and even floated the idea of establishing a state-operated carrier; however, market conditions had evolved significantly. United Airlines expanded its Los Angeles–San Francisco service from 16 to 27 daily flights, while Southwest Airlines launched operations at Burbank Airport with 10 daily flights to Oakland, offering one-way fares as low as $59.

The competition for fares between the Los Angeles Basin and San Francisco Bay Area escalated amid surging oil prices triggered by Iraq's invasion of Kuwait, which subsequently caused demand to plummet during the Gulf War. By January 1991, both American and USAir discontinued most routes inherited from AirCal and PSA, abandoning plans to fully integrate these regional carriers within five years.

PSA’s indirect influence includes inspiring Southwest Airlines—a trailblazer in affordable air travel that revolutionized the global airline industry. Another aspect of PSA’s legacy is linked to Kenny Friedkin’s son, Thomas H. Friedkin, who was a former PSA pilot and became the largest shareholder after his parents passed away. Thomas invested in Gulf States Toyota Distributors, a business now valued in the billions and managed by his son Dan Friedkin.

The visual identity of PSA persists through aircraft liveries; US Airways adorned an Airbus A319 with PSA colors and continued this tradition after merging with American Airlines until 2024. As of 2025, American Airlines also operates an Airbus A321 featuring a PSA-themed design.

Corporate culture

PSA gained recognition for its lighthearted atmosphere and warm customer service under founder Ken Friedkin, who was known for wearing Hawaiian shirts and encouraging employees to interact playfully with travelers. The airline’s motto, "The World's Friendliest Airline," was symbolized by the distinctive smile painted on each plane’s nose as part of the "Catch Our Smile" campaign. Military personnel affectionately referred to PSA as the "Poor Sailor's Airline" due to its discounted ticket prices. After USAir acquired PSA, former PSA mechanics occasionally painted smiles on USAir aircraft as a homage.

During the 1960s and early 1970s, PSA’s vibrant flight attendant uniforms—transitioning from miniskirts to hotpants—embodied its youthful brand identity. Flight attendant Marilyn Tritt documented her experiences in her memoir *Long Legs and Short Nights*.

PSA flight attendants fostered strong passenger loyalty through humor, outstanding service, and commitment. One attendant, Sandy Daniels, established the "Precious Stewardess Association," supported by loyal frequent flyers who often brought gifts. In response, PSA created the "Precious Passenger Association," which rewarded courteous passengers with certificates and complimentary beverages, reinforcing its distinctive approach to customer engagement.

Headquarters

PSA’s corporate offices were housed in a windowless gray-brown structure on Harbor Drive in San Diego, California. This building functioned as San Diego International Airport's commuter terminal until 2015, when it was repurposed into administrative offices for the San Diego County Regional Airport Authority.

Accidents and incidents

• On January 15, 1969, a collision occurred between PSA Flight 990, a Boeing 727-100 (N973PS), and a Cessna 182 at approximately 1800 feet altitude. Both aircraft were operating within controlled airspace and communicating on the same radio frequency. The 727 managed to land safely at Ontario, California, while the Cessna, despite losing its right wingtip and aileron, successfully glided back to San Francisco International Airport without further complications. According to a PSA representative, the 727 sustained minor damage to its engine nacelle and tail tip.
• On March 5, 1974, a PSA NAMC YS-11 used for training experienced engine failure during a simulated stall approach near Borrego Springs, California. All four crew members survived the incident; however, the aircraft was declared a total loss.
• On September 25, 1978, PSA Flight 182, operated by a Boeing 727-200, crashed in San Diego following a mid-air collision with a Cessna 172 while on final approach to Lindbergh Field. The crash resulted in the deaths of all 135 passengers and crew aboard the PSA flight, both occupants of the Cessna, and seven individuals on the ground. This tragic event remains the deadliest mid-air collision in U.S. aviation history. A lawsuit led by Gary Aguirre held PSA responsible for damages arising from the accident.
• On December 7, 1987, PSA Flight 1771, flying a BAe 146, crashed near Cayucos, California after a disgruntled former employee named David Burke—who had been terminated for theft—armed himself onboard and fatally shot several crew members before deliberately causing the aircraft to dive. All 43 people onboard lost their lives.

Hijackings

Significant hijacking incidents involving fatalities or international diversions include:

• On January 7, 1972, PSA Flight 902, a Boeing 727-200 traveling from San Francisco to Los Angeles, was hijacked and diverted to Cuba. The captain successfully negotiated the release of passengers upon landing in Los Angeles; however, armed hijackers accompanied by an infant continued onward to Cuba with several flight attendants.
• On July 5, 1972, PSA Flight 710, a Boeing 737-200 en route from Sacramento to San Francisco, was seized by hijackers demanding flight to the Soviet Union. The aircraft was stormed while on the ground in San Francisco, resulting in the deaths of one passenger and both hijackers. Actor Victor Sen Yung, known for his role in Bonanza, survived despite being shot.

Destinations

Throughout its years of operation, PSA serviced numerous domestic destinations within the United States, concentrating primarily on major markets in California and across the West Coast. Its principal hub was San Diego International Airport (SAN).

Arizona

• Phoenix Sky Harbor International Airport (PHX)
• Tucson International Airport (TUS)

California

• Arcata-Eureka Airport (ACV)
• Burbank-Glendale-Pasadena Airport (BUR)
• Buchanan Field Airport, Concord (CCR)
• Fresno Yosemite International Airport (FAT)
• Lake Tahoe Airport (TVL)
• Long Beach Airport (LGB)
• Los Angeles International Airport (LAX)
• Monterey Peninsula Airport (MRY)
• Oakland International Airport (OAK)
• Ontario International Airport (ONT)
• Palm Springs International Airport (PSP)
• Sacramento Metropolitan Airport (SMF)
• San Diego International Airport (SAN) – primary hub
• San Francisco International Airport (SFO)
• San Jose International Airport (SJC)
• John Wayne Airport, Santa Ana (SNA)
• Stockton Metropolitan Airport (SCK)

Colorado

• Yampa Valley Airport, Steamboat Springs (HDN)

Idaho

• Boise Air Terminal (BOI)

New Mexico

• Albuquerque International Sunport (ABQ)

Nevada

• McCarran International Airport, Las Vegas (LAS)
• Reno-Tahoe International Airport (RNO)

Oregon

• Eugene Airport-Mahlon Sweet Field (EUG)
• Medford-Jackson County Airport (MFR)
• Portland International Airport (PDX)
• Redmond-Roberts Field (RDM)

Texas

• Dallas Love Field (DAL)
• San Antonio International Airport (SAT)

Utah

• Salt Lake City International Airport (SLC)

Washington

• Bellingham International Airport (BLI)
• Pasco-Tri Cities Airport (PSC)
• Seattle-Tacoma International Airport (SEA)
• Spokane International Airport (GEG)
• Yakima Air Terminal (YKM)

Mexico PSA also operated flights to major Mexican cities including Los Cabos (SJD), Mazatlan (MZT), and Puerto Vallarta (PVR).

Final fleet

At the time of the merger on April 9, 1988, Pacific Southwest Airlines operated the following aircraft:

Pacific Southwest Airlines fleet

Aircraft	In service	Passengers	Notes
BAe 146-100	1	85	Transferred to US Airways and retired during 1988.
BAe 146-200	22		All were handed over to US Airways and phased out by 1991.
McDonnell Douglas DC-9-32	4	100	Previously part of Altair Airlines; moved to US Airways and retired in 2001.
McDonnell Douglas MD-81	21	150	Transferred to US Airways and retired by 2002.
McDonnell Douglas MD-82	10
Total	58

Retired fleet

Aircraft formerly operated by the airline included:

Pacific Southwest Airlines retired fleet

Aircraft	Total	Introduced	Retired	Notes
Bell 206	1	1967
Boeing 727-100	16	1965	1983
Boeing 727-200	33	1968	1985	One was involved in the Pacific Southwest Airlines Flight 182 accident.
Boeing 737-200	14	1968	1976
Douglas DC-3/C-47 Skytrain	9	1949	1955
Douglas C-54 Skymaster	4	1955	1961
Douglas DC-6B	1	1960	1963	Served Oakland, California while awaiting delivery of Lockheed L-188 Electra aircraft.
Lockheed L-188A Electra	4	1961	"~1979"
Lockheed L-188C Electra	5	1959
Lockheed L-1011-1 TriStar	2	1974	1975	Operated briefly between Los Angeles, California and San Francisco, California.
McDonnell Douglas DC-9-31	2	1967	1970

PSA training fleet

The airline’s training aircraft comprised: