- Date
- July 3, 1990, 14:40 local (18:40 UTC)
- Place
- Manchester, MI
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N4690XCessna 150G
- Weather
- Visual (VMC) · Day
- Status
- Completed · report October 2, 1992
- Report
- Approved by Office Director
- FAA report
- 19900703023319A
- Case key
- 14700
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
Loss of engine power due to a stuck exhaust valve.
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 reported that during normal cruise flight he noticed a 'severe vibration, as well as a tremendous loss of power.' He executed a forced landing in a soft, recently plowed field. When the nosewheel touched down, the aircraft nosed over and came to a stop upside down. A post-accident inspection of the engine revealed no compression in the #2 cylinder. Further examination revealed that the #2 cylinder exhaust valve was stuck in the full open position. The most recent maintenance was an annual inspection dated five months before the accident, and the aircraft/engine had accumulated 83 hours since that time. The compression check was satisfactory on all cylinders at the time of the annual inspection.
Aircraft
- Registration
- N4690X
- Reported as
- Cessna 150G
- Category
- Airplane
- Serial number
- 15064740
- Airframe hours
- 3,013
- Engine
- Continental O-200-A, 100 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Phn Air Services, Inc.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · February 10, 1990 · 83 hours before
- Departed
- PTK · Pontiac, MI
- Destination
- NONE · Clinton, MI
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
- 35
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 129 total · 45 in this make and model · 81 as pilot in command · 38 in the last 90 days · 4 in the last 30 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 240° at 10 knots
- Visibility
- 20 statute miles
- Lowest ceiling
- None
- Temperature
- 84 °F, dew point 68 °F
- Observed at
- ARB
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.