- Date
- November 18, 1989, 10:00 local (17:00 UTC)
- Place
- Knights Landing, CA
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N6977KSchweizer G-164B
- Weather
- Visual (VMC) · Day
- Status
- Completed · report July 22, 1992
- Report
- Approved by Office Director
- FAA report
- 19891118046369A
- Case key
- 26570
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The failure of the right main Landing gear due to a sheared bolt that attached the spring leg to the gear.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
A restricted category aircraft experienced a collapse of the main Landing gear during the Landing roll. Examination of one of two AN9-92A bolts revealed it had a sheared head. These bolts attach the right main Landing gear spring leg.
Aircraft
- Registration
- N6977K
- Reported as
- Schweizer G-164B
- Category
- Airplane
- Serial number
- 532B
- Airframe hours
- 5,120
- Engine
- P&W R-1340-AN1, 600 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Aerial application · Part 137
- Registered owner
- Wagner Aviation
- Airworthiness certificate
- Special, Restricted (Special)
- Last inspection
- 100 hour · October 1, 1989 · 47 hours before
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 53
- Certificate
- Commercial
- Airplane ratings
- Multi-engine land, Single-engine land
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Seat
- Center
- Flight hours
- 20,000 total · 1,500 in this make and model · 20,000 as pilot in command · 125 in the last 90 days · 75 in the last 30 days · 6 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 4 statute miles
- Lowest ceiling
- None
- Temperature
- 61 °F, dew point 48 °F
- Altimeter
- 29.00 inHg
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.
Other investigations on N6977K · 1
Matched to the same aircraft by N-number and date.