Casualties unknown

1991-09-20: Boeing 727-224 (N88704) — Continental Airlines — Detroit, MI

Detroit, MI, US

On September 20, 1991, a Boeing 727-224 (registration N88704) operated by Continental Airlines was involved in an aviation accident near Detroit, MI. Investigators recorded the probable cause as: INADEQUATE MAINTENANCE INSPECTION OF THE MAIN LANDING GEAR ACTUATOR ASSEMBLY BY COMPANY MAINTENANCE PERSONNEL. A FACTOR IN THE INCIDENT IS INADEQUATE DESIGN OF THE LANDING GEAR ACTUATOR BY THE MANUFACTURER. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 16 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards
Boeing 727-224
Photo: Pete Macklin / CC BY-SA 2.0, via Wikimedia Commons

An airplane landed with its left main landing gear partially extended after the gear failed to retract following takeoff. Troubleshooting by the crew, company maintenance, and the manufacturer was unsuccessful. The aircraft returned to the departure airport, where foam was applied after landing. Inspection revealed the left main gear truck was captured by the inboard door assembly.

Incident Overview

During a flight, the left main landing gear of an airplane failed to retract properly after takeoff. The aircraft remained in the vicinity of the departure airport while the flight crew, in coordination with company maintenance personnel and the airplane manufacturer, attempted to troubleshoot and resolve the issue. These efforts were unsuccessful, and the crew decided to land back at the departure airport.

Landing and Emergency Response

Upon return, crash fire rescue equipment was standing by. After the airplane came to a stop on the runway, fire trucks applied foam to the left wing and wheel area. The crew and passengers then exited the aircraft using the aircraft's airstairs. No injuries were reported during the evacuation.

Post-Inspection Findings

Inspection of the left main landing gear (MLG) revealed that the landing gear trucks had been captured and suspended in an intermediate position by the left main gear inboard door assembly. Further examination of the MLG door actuator fitting showed that the actuator had moved to the far end of the available adjustment range. The incident airplane had landed with the left main landing gear partially extended.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X18055. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.