Cessna 750 N961QS

Summary

On 18 August 2004 at about 18:14 local time, a Cessna 750 registered N961QS was involved in an incident near Jackson, Wyoming, United States. 4 people were on board and nobody was injured. The aircraft was slightly damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

18 August 2004 at 18:14

Classification

Incident

Location

Jackson, Wyoming, United States

Nearest airport

Jackson Hole Airport (JAC)

Coordinates

43.6122, -110.7408

Aircraft

Cessna 750

Registration

N961QS

Category

Airplane

Engines

2

Operator

Not recorded

Operating rule

Part 135: Air Taxi & Commuter

Phase of flight

Not recorded

Route

San Jose → Jackson

Aircraft damage

Minor

Weather

VMC

Light

Day

NTSB number

DEN04IA126

Nobody was injured.

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.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

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.

Quoted verbatim from the NTSB record.