NTSB Identification: ANC87IA003.
The docket is stored on NTSB microfiche number 32797.
Incident occurred Wednesday, October 15, 1986 in ANCHORAGE, AK
Aircraft: BOEING 727-22C, registration: N753AS
Injuries: 115 Uninjured.
NTSB investigators used data provided by various sources and may not have traveled in support of this investigation to prepare this aircraft incident report.
AFTER DEPARTURE, THE FLIGHT CREW RETRACTED THE LANDING GEAR AND NOTICED A NOSE GEAR DISAGREEMENT LIGHT. UPON ARRIVING AT ANCHORAGE, THE FLIGHT CREW COULD NOT LOWER THE NOSE GEAR THROUGH NORMAL OR MANUAL MEANS. THE AIRPLANE LANDED WITH MAIN GEAR EXTENDED AND THE NOSE GEAR RETRACTED. EXAMINATION OF THE NOSE GEAR MECHANISMS REVEALED THAT THE TWO LINKS WHICH EXERCISE THE PAWL BLOCK LOCKS HAD FAILED ALLOWING THE NOSE GEAR TO REMAIN IN THE FULLY RETRACTED AND LOCKED POSITION.
The National Transportation Safety Board determines the probable cause(s) of this incident to be:MAINTENANCE,MAJOR REPAIR..IMPROPER..OTHER MAINTENANCE PERSONNEL
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