Probable cause
A ductile overstress fracture failure of the right main landing gear bell crank assembly pivot bolt, which resulted in a collapse of the right main landing gear.
NTSB analysis
The pilot reported that, during the landing approach, he selected the landing gear selector switch to the down position, which was followed by "three greens," indicating that the landing gear was down, locked, and safe for landing. He noted that all three occupants verified and verbally confirmed that the landing gear was "down and locked." The airplane landed uneventfully, but as the pilot started a left turn onto the taxiway, the right main landing gear collapsed, and the right wing struck the ground, sustaining substantial damage.
A postaccident examination of the landing gear system revealed that the right main landing gear assembly bell crank pivot bolt had sheared and displayed features consistent with a ductile overstress fracture from shear loading.
Text from the NTSB. Open the NTSB docket for ANC19LA039 for the full record.
Event
- Date
- Jul 22, 2019
- Type
- Accident
- Place
- Boise, Idaho
- Nearest airport
- Boise Air Terminal/Gowen Field (BOI)
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Day
Cessna 402
- N-number
- N7947Q
- Category
- Airplane
- Year built
- 1973
- Damage
- Substantial
- Operating rule
- Part 91 (general aviation)
- Purpose of flight
- Other work use
From the NTSB aviation accident database: N-registered aircraft, events since 2008, data through Oct 28, 2026. The file is published monthly, so the latest weeks are incomplete and recent records can change. The official source is the NTSB aviation investigation search. CheckAero is independent and not affiliated with the NTSB.