EAS Airlines Flight 4226

EAS Airlines

Industry	Airline
Headquarters	Kano , Nigeria
Products	Passenger air transport

EAS Airlines Flight 4226 Accident Overview

EAS Airlines Flight 4226 was a domestic passenger service operating between Kano and Lagos, Nigeria. On 4 May 2002, the aircraft assigned to this route—a BAC One-Eleven 525FT carrying 69 passengers and 8 crew members—overran the runway during takeoff. It crashed into the densely inhabited Gwammaja Quarters, situated roughly three kilometres (1.9 mi; 1.6 nmi) from Mallam Aminu Kano International Airport, and ignited upon impact. The tragedy resulted in the deaths of 66 passengers and 7 crew on board, as well as at least 30 fatalities among residents on the ground. This incident ranks as the deadliest accident involving a BAC One-Eleven, with a combined death toll exceeding 100.

The Nigerian Accident Investigation and Prevention Bureau concluded that pilot error was the primary cause of the crash. After overrunning the runway, the aircraft traveled several hundred meters further, during which dust stirred up by its wheels entered the engines, significantly reducing their thrust capacity. The situation worsened because the landing gear remained extended, impairing acceleration and control. Ultimately, these factors led to a loss of adequate airspeed and the subsequent crash. Since functional flight recorders were not recovered, investigators could not definitively establish why the crew allowed the aircraft to overrun the runway.

Incident Details

• Date: 4 May 2002
• Location: Gwammaja Quarters, near Mallam Aminu Kano International Airport, Kano, Nigeria
• Aircraft type: BAC One-Eleven 525FT
• Operator: EAS Airlines
• Flight number: ECHOLINE 4226
• Tail number: 5N-ESF
• Passengers on board: 69
• Crew members: 8
• Fatalities onboard: 73 (66 passengers, 7 crew)
• Ground fatalities: At least 30
• Injuries onboard: 4 survivors
• Ground injuries: Over 47

Aircraft

The aircraft involved in the accident was a BAC One-Eleven 525FT, registered as 5N-ESF.Template:Fix/category Built in 1980, it was initially delivered to TAROM bearing the Romanian registration YR-BCN. Subsequently, it was leased to Inex-Adria Aviopromet and Ryanair before being returned to TAROM in 1989.Template:Fix/category In July 2001, EAS Airlines took ownership of the plane, which joined their fleet the following month. At the time of the crash, the aircraft had logged a total of 24,644 flight hours.

Powered by two Rolls-Royce Spey turbofan engines, the aircraft had its left engine installed in 2000. The right engine was more recently fitted on May 2, having been transferred from its sister aircraft registered as 5N-ESD. The most recent comprehensive maintenance inspection occurred in January 2001.

Passengers and crews

Flight 4226 carried a total of 69 passengers alongside 8 crew members, differing from earlier reports that suggested there were 105 passengers onboard. The majority of travelers were Nigerian nationals; however, among them were one Lebanese passenger and at least one individual from the United Kingdom. Additionally, Nigeria's Daily Trust indicated that three French citizens were present on board. Of those passengers, 23 had boarded in Kano with Lagos as their destination, while 47 had embarked in Jos, the flight’s previous stop en route to Lagos.

Among the passengers was Nigeria's Sports Minister Ishaya Mark Aku, who was traveling to attend a warm-up match between Nigeria and Kenya ahead of the 2002 FIFA World Cup. Also onboard were Julie Useni and Danjuma Useni, wife and son respectively of former Minister of Federal Capital Territory Jeremiah Useni.

The flight was commanded by Captain Peter Abayomi Inneh, aged 49, who had amassed over 14,000 flight hours, including approximately 7,000 hours on this aircraft type. He joined EAS Airlines in 2000 and had been operating the BAC One-Eleven since then. The first officer was Chris Adewole Adegboye, aged 47, with more than 8,000 total flight hours and around 3,350 hours flying this specific model. The flight engineering team consisted of Emmanuel Idoko and Muhammad Sarki.

Accident

Flight 4226 operated from Mallam Aminu Kano International Airport located in the northern region of the country to Lagos Murtala Muhammed International Airport in the southwest. Prior to this leg, the airplane had completed a journey to Jos within neighboring Plateau State. Upon arrival in Kano, 36 passengers disembarked while 47 boarded for the onward trip. The departure was scheduled for approximately 13:30, with Captain Peter Inneh and First Officer Chris Adegboye at the controls. The aircraft was carrying a total of 69 passengers alongside 8 crew members.

At 13:19, the flight crew requested clearance to start engines and began taxiing toward the runway. By 12:26, the plane was aligned on the runway. Captain Peter humorously remarked, "FL280 (28,000 ft (8,500 m)) for EXW4226, ready for space travel," before receiving take-off clearance from Kano Tower for Runway 23, along with a brief weather and temperature update. Once the clearance was given, the aircraft initiated its take-off roll.

Crash

During acceleration, air traffic control observed that the aircraft’s speed was unusually slow. As the plane crossed the runway threshold, its nose was pitched upward; however, the landing gear remained in contact with the surface. The aircraft exceeded the runway’s end, colliding with two runway edge lights. A cloud of dust was visible from the control tower as it overran. Although it lifted off beyond the runway boundary, before becoming fully airborne, the landing gear struck an uneven patch on the ground, resulting in a severe jolt that shook the entire cabin and caused parts of the ceiling to collapse onto the floor. This impact further stirred up a large dust cloud around the aircraft.

Despite managing to leave the runway surface, Flight 4226’s airspeed began to decline rapidly, placing it at risk of stalling. The aircraft started swaying laterally while Captain Peter reported an engine malfunction to air traffic control, stating: "My take-off is difficult, I heard a sound on my right engine. The aircraft is wobbling. I think I'm in a difficult situation." Efforts were made by the crew to prevent stalling by lowering the nose; however, their altitude was critically low with residential buildings visible just meters away from inside the cabin. Passengers aboard were frightened and screaming during this phase.

Onlookers on the ground who saw the aircraft descending hurried to seek safety. Unable to gain sufficient height or avoid obstacles ahead, the plane clipped a mosque minaret before crashing into several houses and an Islamic school nearby. It then struck another mosque at high speed and erupted into flames. At least 100 students were present in the school complex at that time while prayer services were ongoing in local mosques. Multiple buildings including both mosques and the school collapsed as a result of the impact.

Immediate aftermath

Numerous students, worshippers, and local inhabitants found themselves trapped beneath the debris. Witnesses reported hearing anguished cries and frantic screams from those on the ground as they hurried toward the crash location, attempting to locate family members caught in the wreckage. Several calls for assistance were reportedly heard coming from within the aircraft. Meanwhile, flames rapidly engulfed the surrounding neighborhood. Firefighters arrived at the scene within ten minutes of the crash; however, the presence of a large crowd of onlookers and volunteers hindered their ability to carry out rescue efforts efficiently. The lack of accessible water sources at the site, combined with hostile reactions from bystanders toward emergency personnel, further complicated firefighting operations. Supplies of water and foam were quickly depleted, forcing crews to return to the airport to replenish their equipment. Tragically, some individuals trapped in the blaze could not be rescued. The fire spread swiftly, consuming those caught inside.

Three individuals survived the crash and were promptly transported to nearby medical facilities in critical condition. One Lebanese passenger exited through an aircraft door immediately after impact and encountered another survivor found beneath a shed. While the Lebanese passenger sustained minor injuries, the other survivor suffered severe wounds. Both managed to climb onto the ruins of a nearby house before deciding to leap onto the roof of an adjacent building. Subsequently, two local residents assisted in transporting them to a hospital.

In response to the disorderly circumstances, military personnel and police forces were deployed to secure the area. Officials reported that local morgues reached capacity due to the high number of fatalities, resulting in bodies being stacked on floors. Some deceased were transferred to Aminu Kano Teaching Hospital for storage. Additionally, off-duty emergency responders were called back into service to aid in managing the aftermath of this disaster.

Casualties

Following the crash, the death toll reached 103 individuals, comprising 66 passengers and 7 crew members. The precise number of fatalities on the ground remains uncertain, though reports indicate over 30 victims lost their lives there. Among those who perished were reportedly more than 10 children. The remains of the deceased were distributed among several hospitals in Kano: the Nigerian Armed Forces Medical Centre received 22 bodies, Murtala Mohammed General Hospital in the city took in 61, and the remaining 23 were sent to various private medical facilities throughout Kano. The majority of the recovered bodies were severely burned.

Survivors included one cabin crew member and three passengers. Initially, five people survived the incident; however, one later died from injuries sustained. Of the four survivors, one escaped without injury, another had minor wounds, while two were in critical condition. Due to the severity of their injuries, two survivors required medical treatment abroad, with one being treated in Cologne. Most survivors had been seated toward the rear or near the rear section of the aircraft.

On the ground, 47 individuals sustained injuries from the crash; among them, 24 suffered serious wounds while 23 experienced minor injuries.

Rescue teams reported that at least 30 homes were destroyed by the impact. The Nigerian Red Cross further noted that hundreds of people were rendered homeless by the disaster.

Response

In reaction to the tragedy, Nigerian President Olusegun Obasanjo cut short his tour of Southern African states and promptly returned to Abuja to monitor developments. He conveyed condolences to those affected and declared a two-day national mourning period across Nigeria during which all flags would be flown at half-mast. An immediate investigation into the crash was ordered by him, with assurances that foreign experts would be involved if deemed necessary.

The Emir of Kano, Ado Bayero, alongside Kano State Governor Rabiu Kwankwaso, visited the crash site and later expressed their sympathies to bereaved families. Vice President Atiku Abubakar also visited on May 4; however, his visit was met with hostility as local residents threw stones at his convoy, prompting police to deploy tear gas against the crowd. President Obasanjo’s visit on May 6 similarly encountered anger from victims' relatives who accused him of insensitivity; his arrival was unannounced, secured tightly by officials, and he refrained from engaging with the public during this visit.

President Obasanjo committed $86,000 in federal aid for those affected by the crash and pledged reconstruction of destroyed homes. A spokesperson for Kano State assured that every effort would be made to ease victims’ hardships. To coordinate relief efforts, Kano State established a 21-member committee led by its deputy governor responsible for collecting and distributing assistance. Reports indicated that donations amounting to approximately 24 million Naira had been raised nationwide.

Following Ishaya Mark Aku’s death in the accident, Nigerian Minister of Police Affairs Stephen Akiga was appointed as his replacement. In light of Aku’s passing, the Nigeria Football Federation canceled a scheduled friendly match against China.

Due to severe damage rendering identification impossible for many victims—most notably because of extensive burns—a total of 56 bodies remained unidentified. The Kano government organized a mass burial ceremony for these individuals; six trucks transported the remains to their final resting place amid attendance by hundreds of mourners. Prior to burial, a prayer service took place at Gidan Rumfa, residence of the Emir of Kano.

In response to this disaster, Nigerian Minister of Aviation Kema Chikwe ordered an immediate grounding of all BAC One-Eleven aircraft within Nigeria. She further announced that no aircraft older than 22 years would be registered going forward and owners would have a five-year window to retire such planes. Additionally, a comprehensive review of private airline operations across Nigeria was initiated following these events.

Investigation

Following the crash, Nigerian officials initiated a formal inquiry, with Aviation Minister Kema Chikwe establishing a dedicated panel to examine the incident. On the same day, the Nigerian federal upper legislative chamber convened publicly to address the crash as part of their investigative efforts. Idris Wada, Managing Director of EAS Airlines, maintained that the aircraft was in sound condition prior to the accident. He further disclosed that Lloyds Insurance, which underwrote the BAC 1-11-500 involved in the crash, had dispatched a representative from London to assist in determining the cause. Wada noted that the aircraft had been equipped with an engine taken from another grounded EAS Airlines BAC 1-11 just four days before the accident—a fact that prompted scrutiny from the senate. He defended this practice as a common occurrence within the aviation sector.

Before this tragic event, the aircraft had been grounded twice: once in 2001 for an eleven-day period to conduct engine maintenance, and again in 2002 for fifty-two days due to engine-related issues.

Runway overrun

An aerial image of Kano Airport

Various potential causes for the runway overrun were explored during the investigation. Ultimately, findings confirmed that no mechanical faults were present on the aircraft, affirming its airworthiness. Weather conditions were clear at the time, and although temperatures were elevated, air density was not deemed to have adversely impacted takeoff performance given the airport’s elevation. The aircraft's actual takeoff weight fell within acceptable limits for a safe departure.

Mallam Aminu Kano International Airport features two runways: 06/24 and 05/23. The longer Runway 06/24 was undergoing refurbishment during the incident, prompting air traffic controllers to direct flights to use Runway 05/23 instead. Despite this adjustment, Runway 05/23 provided sufficient length for a safe takeoff; nonetheless, the aircraft still exceeded its boundaries. Prior to Flight 4226’s accident, no runway excursion incidents had been recorded at this airport.

The investigation faced significant challenges due to the absence of critical flight recorder data. The cockpit voice recorder was not recovered at the crash site. Although investigators retrieved the flight data recorder, its contents did not correspond to any flights conducted in Nigeria. This device had never been serviced by EAS Airlines and contained recordings solely from previous operations with European carriers. Consequently, investigators lacked vital information needed for thorough analysis.

The most credible theory proposed by investigators pointed to pilot complacency during the takeoff roll. Both pilots were flying into Kano for their first time and appeared accustomed to operating from airports with longer runways on prior flights. They seemingly failed to adequately consider the shorter runway length at Kano during their takeoff preparations. It is likely that their focus remained on monitoring engine parameters and cockpit instruments until it was too late to adjust for runway limitations. According to testimony from the air traffic controller on duty, the aircraft’s acceleration was slow, with airspeed fluctuating between V1 and Vr speeds while consuming excessive runway distance, leaving no room for corrective action. This misjudgment by both crew members directly contributed to overrunning the runway.

Despite this plausible explanation, investigators could not definitively verify their conclusion due to insufficient flight recorder data. As a result, the exact cause of the runway overrun remains undetermined.

Inability to Achieve Proper Takeoff

With scarce data available, investigators depended heavily on testimonies from eyewitnesses and survivors. The air traffic controller observed that the aircraft's acceleration during the takeoff roll was notably sluggish, failing to reach the typical speed expected for departure from Runway 23. After veering off the runway, the airplane traveled roughly 148 metres (486 ft; 162 yd) before finally lifting off. However, prior to fully leaving the ground, the landing gear collided with a depression in the terrain, which served as a transformer pit for the approach lighting system. This impact subjected the aircraft to forces between 3G and 4G, significantly impairing its ability to accelerate. The violent collision also generated a substantial cloud of dust, which was subsequently ingested by the engines, leading to diminished thrust.

The BAC One-Eleven’s engines were mounted at the rear of the fuselage. Earlier investigations by the AIPB revealed that objects could be propelled into the engine intakes by airflow disturbances caused by the main landing gear tires. Acting much like a powerful vacuum, the engines occasionally sucked in foreign debris. In the case of Flight 4226, dust stirred up by the tires was drawn into the engines. This was confirmed during engine disassembly, where compressed dust deposits were found packed within the high-pressure turbine section, forming a compacted layer lodged in compressor casing gaps. The accumulation of dust inside the engines caused a temporary drop in thrust output. Consequently, with reduced engine power, the aircraft struggled to gain altitude at an adequate rate.

The aircraft’s climb performance was further compromised by its configuration at liftoff. The landing gear remained extended when the plane left the ground, whereas it is standard procedure to retract it shortly after achieving a positive climb rate. For Flight 4226, overrunning the runway and striking the ground depression likely induced considerable stress on the flight crew, resulting in no immediate action to retract the gear. Keeping the landing gear down reduced climb capability considerably; according to performance charts, this configuration could decrease climb rate by up to 150 feet per minute (46 m/min) during takeoff. Instead of registering a positive climb rate, Flight 4226’s instruments indicated a descent rate of 193 feet per minute (59 m/min).

Ultimately, due to its low altitude combined with impaired climb performance and reduced speed capability, the aircraft was unable to ascend safely above the densely populated Gwammaja Quarters.

Additional observations

The inquiry further uncovered issues related to EAS Airlines' operational practices, especially concerning maintenance culture and the regulatory oversight within Nigeria's aviation sector at that period. This examination was carried out with support from ICAO and experts from the United Kingdom's Baines-Simmons. Findings revealed that the two certifying engineers assigned to the aircraft had been working without sufficient rest intervals. It was also noted that neither the Cockpit Voice Recorder (CVR) nor the Flight Data Recorder (FDR) appeared to have been subjected to daily inspections, and certain maintenance records remained incomplete. Additionally, EAS Airlines engaged in a practice of sustaining their fleet by cannibalizing parts from an aircraft deemed unairworthy.

Although these issues were identified, investigators concluded there was no proof that maintenance mistakes contributed to the accident. Nevertheless, incomplete logbook documentation was reported as a common occurrence among Nigerian airlines at that time. The investigation highlighted that Nigeria’s aviation regulatory authority, the NCAA, had not adequately prioritized oversight of the national aviation industry. An audit of the NCAA revealed that while a ramp inspection plan existed, it lacked comprehensive details necessary to cover all aspects of aircraft airworthiness.

Summary

The conclusive report attributed the accident to the flight crew’s failure to safely complete the takeoff within the runway’s available length. A breakdown in communication and coordination among the flight crew members resulted in the aircraft’s inability to rapidly and safely gain altitude, ultimately leading to the crash.

Following the accident, the AIPB issued eight recommendations aimed at enhancing supervision, enforcing stricter sanctions against operational malpractices, and improving standards related to aircraft flight recorders. One key recommendation was that the NCAA must not register any aircraft under Nigerian registration unless equipped with a digital flight data recorder. Furthermore, the NCAA was instructed to promptly audit all BAC One-Eleven aircraft operating within Nigeria to ensure only operators possessing necessary spare parts are authorized to conduct flights—a direct response to EAS Airlines’ practice of cannibalizing unserviceable aircraft.

See also

• Viasa Flight 742, another accident involving a small twinjet aircraft (a McDonnell Douglas DC-9) that crashed into a densely populated urban area shortly after takeoff, resulting in numerous ground casualties.

External links

• Images from the incident, BBC
• Photographs of the aircraft involved and crash location, Bureau of Aircraft Accidents Archives