NTSB Identification: MIA86IA098.
The docket is stored on NTSB microfiche number 30804.
Scheduled 14 CFR EASTERN AIRLINES INC.
Incident occurred Sunday, March 16, 1986 in MIAMI, FL
Aircraft: BOEING 727, registration: N8861E
Injuries: 140 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.

DURING ARRIVAL AT FT LAUDERDALE, THE AIRCREW ATTEMPTED TO EXTEND THE GEAR, BUT AT FIRST, THEY WERE UNABLE TO GET A SAFE 'DOWN' INDICATION FOR THE RGT MAIN GEAR. AFTER ABOUT ONE HOUR, THEY WERE ABLE TO INSURE THAT BOTH MAIN GEAR HAD EXTENDED& WERE LOCKED. THEY DIVERTED TO MIAMI, BUT BY THEN, THEY WERE UNABLE TO EXTEND THE NOSE GEAR BY USING THE NORMAL GEAR EXTENSION SYS & THEY HAD ONLY 4000 LBS OF FUEL REMAINING. THE CAPTAIN ELECTED TO LAND WITHOUT MANUALLY EXTENDING THE NOSE GEAR; HE WAS CONCERNED ABOUT THE LOW FUEL CONDITION AND BELIEVED THAT HE MIGHT COMPROMISE THE MAIN LANDING GEAR POSITION BY PLACING THE GEAR HANDLE IN THE NEUTRAL POSITION WHILE THE 'A' HYDRAULIC SYS WAS OFF. AN EXAM REVEALED THE ROD END OF THE LANDING GEAR LOCK ACTUATOR, PN 69-30537-4, HAD FAILED. A METALLURGICAL EXAM REVEALED THE ROD END HAD FAILED FROM FATIGUE IN THE THREADED AREA WHERE CORROSION HAD OCCURRED. ALSO, AN ELEC FAILURE WAS FND IN THE LANDING GEAR LOGIC RESOLUTION CIRCUIT THAT WOULD HAVE CAUSED AN IMPROPER INDICATION OF THE RIGHT MAIN GEAR.

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

EMERGENCY PROCEDURE..NOT USED..PILOT IN COMMAND

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

LANDING GEAR,GEAR LOCKING MECHANISM..FATIGUE


Contributing Factors

ELECTRICAL SYSTEM..FAILURE,PARTIAL


Contributing Factors

LANDING GEAR,GEAR INDICATING SYSTEM..FALSE INDICATION


Contributing Factors

LACK OF FAMILIARITY WITH AIRCRAFT..PILOT IN COMMAND




Contributing Factors

LANDING GEAR,GEAR LOCKING MECHANISM..CORRODED

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