NTSB Identification: NYC84IA192.
The docket is stored on NTSB microfiche number 26894.
Scheduled 14 CFR TRANS WORLD AIRLINES, INC.
Incident occurred Saturday, June 02, 1984 in FLUSHING, NY
Aircraft: BOEING 727-31, registration: N855TW
Injuries: 66 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 TAKEOFF FLT ATTENDANT REPORTED AFT AIRSTAIR PARTIALLY OPEN. FLT ENGINEER CHECKED & CONFIRMED AIRSTAIR OPEN APRX 18 INCHES. REMEDIAL ACTION PERFORMED TO NO AVAIL. UNSCHEDULED LANDING PERFORMED WITHOUT INCIDENT. AS ACFT TURNED ONTO TAXIWAY AIRSTAIR CONTACTED GROUND. INVESTIGATION DISCLOSED, PRIOR TO DEPT MAINTENANCE SUPERVISOR PLACARDED AFT AIRSTAIR WARNING LIGHTS IN THE COCKPIT 'INOPERATIVE.' SUPERVISOR THEN MADE LOGBOOK ENTRY 'AIRSTAIRS CHECKED UP AND LOCKED.' INSPECTION REVEALED PLUNGER ON AFT AIRSTAIR BUNGEE ASS'Y WAS BOUND INSIDE ITS HOUSING DUE TO CORROSION & DIRT INSIDE THE BUSHING THROUGH WHICH PLUNGER SLIDES. MAINTENANCE MIN EQUIP & DISPATCH PROC WHICH WAS PERFORMED WAS TO VERIFY UPLATCH MECHANISM ENGAGED WITH UPLOCK ROLLERS ON AIRSTAIR. A NON-VALID TWA ACFT MAINTENANCE BULLETIN STATED THE ABOVE PROCESS DOES NOT ENSURE THE UPLATCH MECHANISM IS LOCKED AND THAT THE SOFT SURFACES MUST BE IN CONTACT TO VERIFY THE CRANK ARMS ARE LOCKED OVER-CENTER.

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

MAINTENANCE..INADEQUATE..COMPANY MAINTENANCE PERSONNEL


Contributing Factors

DOOR,ENTRANCE STAIR..CORRODED


Contributing Factors

DOOR,ENTRANCE STAIR..BINDING(MECHANICAL)

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