Serious incident McDonnell Douglas DC-10-10 N117AA, Wednesday 12 December 1984

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Date:	Wednesday 12 December 1984
Time:	17:17 LT
Type:	McDonnell Douglas DC-10-10
Owner/operator:	American Airlines
Registration:	N117AA
MSN:	46517/49
Total airframe hrs:	36373 hours
Engine model:	GE CF6-6K
Fatalities:	Fatalities: 0 / Occupants: 189
Other fatalities:	0
Aircraft damage:	Minor
Category:	Serious incident
Location:	Jamaica, NY - United States of America
Phase:	Taxi
Nature:	Passenger - Scheduled
Departure airport:
Destination airport:	Los Angeles International Airport, CA (LAX/KLAX)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
DURING TAXI FOR DEPARTURE, ACFT EXPERIENCED SEVERAL JOLTS TO THE RIGHT. CAPT STOPPED ACFT AND REQUESTED GRND PERSONNEL TO INSPECT LANDING GEAR. INSPECTION REVEALED RT MAIN GEAR TRUCK BEAM FAILED. METALLURGICAL INSPECTION OF TRUCK BEAM ASS'Y CONCLUDED THE FAILURE WAS CAUSED BY STRESS CORROSION. MANUFACTURER REVISED SERVICE BULLETIN, A32-127, ON 5/9/85 TO ADDRESS STRESS CORROSION IN AREA WHERE THE FAILURE OCCURRED AND RECOMMENDED MODIFICATION. THE FAILED TRUCK BEAM HAD BEEN MODIFIED IN OCTOBER 1981 BY THE OPERATOR.

Probable Cause:

Accident investigation: