- Date
- October 14, 1991, 15:30 local (22:30 UTC)
- Place
- Marysville, WA
- Injuries
- 3 minor
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N7759PPiper PA24-180
- Weather
- Visual (VMC) · Day
- Status
- Completed · report April 27, 1993
- Report
- Approved by Office Director
- FAA report
- 19911014046139A
- Case key
- 41601
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 slippage of the accessary drive gear due to improper maintenance by other maintenance personnel. Factors include a forced landing in unsuitable terrain.
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 Piper pa 24 impacted the terrain during a forced landing, after a total engine failure on climbout. Investigation revealed that the accessary drive gear was loose on the end of the crankshaft, and was therefore not driving the accessary section. The aircraft had experienced a propeller strike at an earlier date, and the instructions in the Textron Lycoming service bulletin were not followed when the repairs were performed. The bulletin called for a new style drive gear and gear retaining bolt, but the old style parts were installed instead. According to Lycoming, the new parts must be used in order to insure that the gear seats on the crankshaft mounting face, and does not work loose during engine operation.
Aircraft
- Registration
- N7759P
- Reported as
- Piper PA24-180
- Category
- Airplane
- Serial number
- 2975
- Airframe hours
- 2,673
- Engine
- Lycoming O360A1D, 180 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Operator
- Jenkins Aircraft
- Registered owner
- Jenkins Aircraft
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · August 15, 1991 · 33 hours before
- Departed
- S88 · Arlington, WA
- Destination
- OS9 · Port Townsend, WA
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
- 69
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Valid Medical--w/ waivers/lim
- Seat
- Left
- Flight hours
- 1,288 total · 1,200 as pilot in command · 40 in the last 90 days · 7 in the last 30 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Visibility
- 50 statute miles
- Lowest ceiling
- None
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.