- Date
- May 10, 1989, 14:55 local (22:55 UTC)
- Place
- Tatitlek, AK
- Injuries
- 5 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N966JWCessna C-402
- Weather
- Visual (VMC) · Day
- Status
- Completed · report August 2, 1990
- Report
- Approved by Office Director
- NTSB office
- Alaska Regional Office
- FAA report
- 19890510011249A
- Case key
- 5107
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
Installation of the improper washer on the scissors assembly of the left main landing gear. The extra forces encounteredon a gravel runway were sufficient to pull the bushing, washer, and bolt through the scissors assembly and allowing the lower half to pivot freely.
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
The pilot-in-command touched down on the gravel runway and began to apply brakes. The airplane began to veer to the left and the pilot released the brakes and used asymmetric power and braking, but the airplane still left the runway about midway down the runway. Subsequent examination revealed that a small washer placed beneath the bolt head, which holds the upper and lower scissors assembly together, had pulled through on the left main gear allowing the lower half of the main gear to pivot freely.
Aircraft
- Registration
- N966JW
- Reported as
- Cessna C-402
- Category
- Airplane
- Serial number
- 4020066
- Airframe hours
- 8,881
- Engine
- Continental IO-520-E, 300 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Part 135
- Operator
- Wilburs Incorporated, doing business as Wilburs Flight Operations
- Registered owner
- Joseph & Anne Wilbur
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · April 20, 1989 · 55 hours before
- Departed
- MRI · Anchorage, AK
- Destination
- AK47 · Tatitlek, AK
- Flight plan
- IFR
- Airport
- AK47 · Tatitlek, runway 12, 2,200 × 95 ft, gravel
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
- 43
- Certificate
- Airline transport
- Airplane ratings
- Multi-engine sea, Single-engine land, Multi-engine land, Single-engine sea
- Instrument ratings
- Airplane, Helicopter
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 11,025 total · 80 in this make and model · 7,677 as pilot in command · 229 in the last 90 days · 88 in the last 30 days · 3 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 130° at 7 knots
- 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 N966JW · 1
Matched to the same aircraft by N-number and date.