- Date
- April 21, 1988, 08:45 local (13:45 UTC)
- Place
- Zeigler, IL
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N9410UCessna 150M
- Weather
- Visual (VMC) · Day
- Status
- Completed · report September 25, 1989
- Report
- Approved by Office Director
- FAA report
- 19880421012409A
- Case key
- 14065
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
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
Upon completion of a practice emergency landing procedure during an instructional flight, the engine started to run rough and then quit. The instructor was able to regain partial power, and made forced landing in freshly plowed field. The aircraft nosed over just before it came to a complete stop. The engine was test run on the airframe, and ran very rough. Differential compression check was performed with low compression on cylinders #2 and #4. Further investigation revealed that the #2 and #4 exhaust valves were binding when the valves were approximately 0.25 inches from the seat. The valve stems were examined and found to have a carbon-like deposit surrounding the stem from the valve face to the area on the stem where it enters the valve guide.
Aircraft
- Registration
- N9410U
- Reported as
- Cessna 150M
- Category
- Airplane
- Serial number
- 15078358
- Airframe hours
- 4,866
- Engine
- Continental O-200, 100 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Operator
- Southern Illinois University, doing business as Air Institute And Services
- Registered owner
- Air Institute And Service
- Airworthiness certificate
- Standard, Utility
- Last inspection
- Annual · April 4, 1988 · 29 hours before
- Departed
- MDH · Carbondale, IL
- Airport
- NONE
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
- 21
- Certificates
- Commercial, Flight instructor
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Seat
- Right
- Flight hours
- 304 total · 100 in this make and model · 192 as pilot in command · 17 in the last 90 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 140° at 6 knots
- Visibility
- 7 statute miles
- Lowest ceiling
- 25,000 ft broken
- Temperature
- 64 °F, dew point 45 °F
- Altimeter
- 29.00 inHg
- Observed at
- MDH, 20 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.