NTSB Identification: DEN05LA077.
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Scheduled 14 CFR On FIle
Accident occurred Friday, May 13, 2005 in Denver, CO
Probable Cause Approval Date: 10/27/2005
Aircraft: McDonnell Douglas MD-88, registration: N949DL
Injuries: 98 Uninjured.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
Shortly after takeoff, the pilots heard a loud bang and the cabin lost pressurization. The pilots observed an unsafe nose gear indication. They placed the gear handle in the down position and got three green lights. The control tower confirmed that the landing gear were down when the aircraft performed a low pass. The flight made an uneventful landing at Denver. Post-accident examination by maintenance personnel revealed a hole in the forward pressure bulkhead and broken nose gear actuator. The nose landing gear actuator piston rod had worn threads, and a key locking washer in the gear assembly was sheared. The airline said that this was original equipment.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: the failure of the nose gear actuator resulted in penetration of the forward pressure bulkhead and a loss of pressurization. Full narrative available
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