Serious incident Boeing 737-3T0 N12318, Friday 6 November 1998
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Date:Friday 6 November 1998
Time:20:20 LT
Type:Silhouette image of generic B733 model; specific model in this crash may look slightly different    
Boeing 737-3T0
Owner/operator:Continental Airlines
Registration: N12318
MSN: 23369/1188
Year of manufacture:1986
Total airframe hrs:40059 hours
Engine model:Cfm CFM 56-3B
Fatalities:Fatalities: 0 / Occupants: 110
Other fatalities:0
Aircraft damage: Minor
Category:Serious incident
Location:Newark, NJ -   United States of America
Phase: Landing
Departure airport:Phoenix, AZ (KPHX)
Destination airport:(KEWR)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
The Boeing 737-300 touched down under the control of the first officer, and the pilots felt a vibration or shimmy. The captain reported that he took control of the airplane, and stopped it on the runway. Examination disclosed that the lower torsion link on the right main landing gear had failed, and the wheels had rotated 45 degrees outboard. Metallurgical examination of the failed torsion link revealed it had failed in overstress. According to a Boeing 737 Service Letter, this had happened before and was traced to excessive play at the torsion link apex joint, which rendered the shimmy dampers ineffective. The shaft on the shimmy damper was bent about 20 degrees rearward, and the apex nut which held the upper and lower torsion links together was loose on the shaft. The damage precluded a check of the apex nut for proper torque.

Probable Cause: A loss of torque on the apex nut of the shimmy damper for undetermined reason(s), which resulted in a failure of the shimmy damper, and the subsequent failure of the lower torsion link of the right main landing gear.

Accident investigation:
Investigating agency: NTSB
Report number: NYC99IA024
Status: Investigation completed
Duration: 1 year and 9 months
Download report: Final report



History of this aircraft

Other occurrences involving this aircraft

17 March 1989 N12318 Continental Airlines 0 Oakland, CA sub

Revision history:

10-Mar-2024 08:28 ASN Update Bot Added

Corrections or additions? ... Edit this accident description

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