- Date
- May 5, 1991
- Place
- Williamsport, PA
- Injuries
- 2 minor
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N94MWKolb Twinstar
- Weather
- Visual (VMC) · Day
- Status
- Completed · report May 5, 1993
- Report
- Approved by Office Director
- FAA report
- 19910505014269A
- Case key
- 36751
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
An engine seizure as the result of overheating.
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 homebuilt airplane collided with the ground in a heavily wooded ravine after its engine quit during cruise flight. The FAA reported that 'the number two cylinder was scored' and the 'engine seized after it overheated.'
Aircraft
- Registration
- N94MW
- Reported as
- Kolb Twinstar
- Category
- Airplane, amateur-built
- Serial number
- A-1
- Airframe hours
- 410
- Engine
- Rotax 503 3561619, 47 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Marshall Welch, Jr.
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Annual · October 10, 1990 · 28 hours before
- Departed
- Trout Run, PA
- Airport
- NONE · Finkhaven
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
- 62
- Certificate
- Private
- Airplane ratings
- Single-engine land, Single-engine sea
- Instrument ratings
- Airplane
- Medical
- Class 3, Valid Medical--w/ waivers/lim
- Seat
- Left
Weather
- Conditions
- Visual (VMC) · Day
- Lowest ceiling
- None
- Temperature
- -0 °F, dew point -0 °F
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.