Western Airlines Flight 2605

The aircraft involved was a wide-body McDonnell Douglas DC-10-10, registered N903WA.[4] It was painted with Western Airlines's "DC-10 Spaceship" livery.[5] With the Spaceship layout, the aircraft had 46 first class seats, and 193 coach seats.[6] The aircraft first flew in 1973 and in six years logged a total of 24,614 flight hours. On the accident flight, the aircraft had 76 passengers and 13 crew on board.[7] Flight 2605 was piloted by Captain Charles Gilbert, First Officer Ernst Reichel, and Flight Engineer Daniel Walsh.

Mexico City International Airport has two runways: Runway 23 Left (23L), and Runway 23 Right (23R). At the time of the accident, runway 23L had full instrument approach equipment, including an Instrument Landing System (ILS), while Runway 23R did not.[1]^(p106) On October 19, 1979, a notice to airmen was issued stating that Runway 23L would be closed until further notice for resurfacing work.[1]^(p108)

The October 31, 1979 flight left Los Angeles International Airport at 1:40 AM PST (UTC−08:00), and was scheduled to land well before sunrise in Mexico City.[1] The airport was quite dark, as twilight had only started 5 minutes before the crash, and there was ground fog obscuring the runway.[8]

As Flight 2605 approached Mexico City International Airport, air traffic controllers cleared it for an instrument approach using the ILS of Runway 23L, with an expected landing runway of 23R.[9] With runway 23L closed for maintenance, what air traffic controllers expected Flight 2605 to do was to perform what is known as a sidestep maneuver[10] to the (open) runway 23R. This meant that the flight was to follow the instrument landing system's glide path toward Runway 23L, and, as soon as they sighted Runway 23R through the cockpit window, they would reorient their aircraft to land on it instead. Between the time of their beginning the approach and the crash, they were advised that the landing runway was 23R four times by approach control or the tower.[9] But the phrase "sidestep" or "sidestep approach" – common aviation parlance in the United States[9] – was never used by Mexico air traffic controllers to Flight 2605 to describe the approach. There was no published visual representation of the sidestep approach available to the pilots. Text remarks for the sidestep approach to 23R described only ceiling and visibility minimums.[9]

Weather conditions were deteriorating during Flight 2605's instrument approach. A 5:00 AM weather report indicated visibility of 2-3 nautical miles depending on direction; by 6:00 AM (shortly after the accident) visibility was described as "zero".[1] Flight 2605 was on short final to the closed runway at 5:42 AM. Cockpit voice recording audio of the last seconds of the flight indicated that the first officer and captain agreed that they were cleared for 23R (not the runway they were still on approach to). The captain further stated that they were in fact (still) on the approach to 23L, saying "No, this is the approach to the goddamned left". Then at a speed of 130 knots the aircraft's main landing gear touched down, left gear on the grass left of runway 23L and right gear on the runway shoulder, producing a force greater than 2 g. One second later the crew decided to abort the landing and applied go-around power. The flight's first officer began to describe the ILS approach's missed approach procedure, a climb to 8,500 feet, in a "nonurgent, perfunctory manner" as the DC-10 became airborne. Approximately 3.3 seconds after the touch down and in a 10-11 degree nose up attitude, the right main gear collided with a dump truck loaded with 10 tons of earth. Most of the right main gear separated from the aircraft and struck the right horizontal stabiliser. The impact of the landing gear shattered the truck, fatally injuring its driver, and creating a debris field 400m by 100m in area.[11][1]^(p102)

The damaged aircraft, still airborne with takeoff thrust engaged, began to bank to the right. The bank angle increased until the flap of the right wing struck the cab of an excavator 1,500 meters from the runway threshold. The aircraft's bank angle continued to increase to the point that the right wing began to cut into the ground and taxiways nearby the closed runway.[1][12] The end of the right wing eventually struck the corner of an aircraft repair hangar, causing damage to the hangar and also fracturing the DC-10's right wing.[1] It then impacted an Eastern Airlines service building[13] north of both runways, 26 seconds after it initially touched down. This final impact caused the structural breakup of the aircraft, heavily damaged the two story reinforced concrete building, and caused a fire that consumed most of the aircraft structure.[8][3][14] One part of the DC-10's left wing travelled well off airport grounds, impacting a residential building on Matamoros Street in the Peñón de los Baños colonia and causing a fire there as well.[15][1]^(p103)[16]

Most survivors of Flight 2605 were found in a 20 foot long section of fuselage that did not burn.[17] Survivors reported that large pieces of the building continued to fall onto the wreckage of the aircraft several minutes after the crash, as rescuers arrived on the scene.[17]

As Flight 2605 crashed on Mexican soil, the accident investigation was carried out by the Direction General of Civil Aeronautics (DGAC). Details of its findings were re-published in ICAO circular 173-AN/109.[1] The probable cause of the accident was determined to be "Non-compliance with the meteorological minima for the approach procedure, as cleared; failure to comply with the aircraft's operating procedures during the approach phase, and landing on a runway closed to traffic."[3][1]

A further investigation was carried out by the Air Line Pilots Association, and results summarized in the December, 1983 issue of Flying magazine. While the ALPA report conceded that at face value, the pilots of Flight 2605 had in fact landed on the wrong runway in the face of published minimums, it was published with the notion that the Mexican accident report was of "inadequate depth and detail" and contained "significant errors".[8]

The accident and subsequent investigation prompted the release of NTSB Safety Recommendations A-80-59 and A-80-60. The recommendations required explicit published runway approach procedures for airport approaches involving sidesteps; and distribution of documentation of sidestep approach procedures in general.[9]

• Kenneth "Ken" Lucoff, a news producer for ABC News, who was en route to El Salvador to cover early stages of the Salvadoran Civil War, was killed in the crash.[18] Lucoff had been assigned as ABC's field producer to cover American Airlines Flight 191 earlier in the year. The Friday before the Flight 2605 accident, he told Ken Tiven, ABC News Midwest bureau chief, that "I have not flown a DC-10 since the crash in Chicago and I won't fly a DC-10 unless it's the only way I can get there," a remark quoted by Tiven to the press the day after the crash in Mexico City.[17]

The brother of Kenneth Lucoff and sole heir to his estate, Mark Lucoff, filed an $18,000,000 civil lawsuit against Western Airlines and McDonnell-Douglas in a Chicago circuit court, charging both with negligence in his brother's death.[23]

• Singapore Airlines Flight 006, which also crashed on runway closed for construction during takeoff roll in 2000.
• Aeroflot Flight 3352, a Tupolev Tu-154 struck vehicles on the runway while landing in 1984.
• Comair Flight 5191, mistakenly took off from a shorter and wrong runway in 2006.

• Complete passenger and crew list, with nationalities where known (newspapers.com)
• Photos of N903WA at Airliners.net
• WA 2605, a 35 años del peor accidente aéreo en la Ciudad de México at aviationmex.com.mx, including color photographs
• Plane Crash Kills 72 in Mexico City (Washington Post)