ASN Wikibase Occurrence # 370350
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| Date: | Wednesday 18 August 2004 |
| Time: | 12:14 LT |
| Type: |  Cessna 750 |
| Owner/operator: | NetJets |
| Registration: | N961QS |
| MSN: | 750-0061 |
| Total airframe hrs: | 5228 hours |
| Engine model: | Rolls-Royce AE 3007 C |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Jackson, WY -
 United States of America
|
| Phase: | Landing |
| Nature: | Unknown |
| Departure airport: | San Jose-Norman Y. Mineta International Airport (SJC/KSJC) |
| Jackson, WY | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During landing roll, approximately 10-15 miles per hour, the right main landing gear failed and the airplane came to a stop onto a taxiway. Examination of the airplane revealed the right main landing gear trailing link and wheel assembly separated from the airplane, and a portion of the upper trailing link and axle assembly remained attached to the main trunnion. At the time of the incident, the landing gear assembly had 5,228.5 hours total time, and 3,358 total cycles since new. The trailing link and axle assembly was certified for 44,400 total cycles. Metallurgical examination of the right main landing gear trailing link revealed the failure occurred due to fatigue cracking initiated by an undetected manufacturing defect. The defect was from electrical arcing that produced physical craters on the interior surface of the trailing link and locally changed the microstructure. The craters and changed microstructure served as stress concentrators and would initiate fatigue cracks under the influence of cyclic stresses. Cadmium plating and primer paint covered the defects. The presence of cadmium plating established that the damage had occurred prior to or during the early stages of plating during manufacture.
Probable Cause: the failure of the right main landing gear trailing link due to fatigue cracking initiated by an undetected manufacturing defect. A contributing factor was the improper plating process by unknown manufacture personnel.
Accident investigation:
 |
|
Sources:
NTSB DEN04IA126
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 25-Mar-2024 09:48 | ASN Update Bot | Added |
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