- Date
- July 17, 1985, 07:00 local (12:00 UTC)
- Place
- Guthrie, OK
- Injuries
- 2 minor
- Damage
- Destroyed
- Phase of flight
- Initial climb
- Aircraft
- N20164Cessna 177B
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19850717031749A
- Case key
- 21802
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
The plt stated he lost eng power shortly after takeoff and during initial climb. He elected to go into the trees due to lack of altitude to allow a more suitable landing area. An eng examination disclosed that the no. four exhaust valve was stuck open due to a carbon build up on the rough surface inside the valve guide.
Aircraft
- Registration
- N20164
- Reported as
- Cessna 177B
- Category
- Airplane
- Serial number
- 1702638
- Engine
- Lycoming O-320-A1F6D, 180 horsepower, reciprocating
- Damage
- Destroyed
- Flight
- Aerial observation · Part 91
- Registered owner
- L. H. Underwood
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · February 22, 1985 · 441 hours before
- Destination
- E42 · Spearman, TX
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
- 36
- Certificate
- Commercial
- Airplane ratings
- Single-engine land, Multi-engine land
- Medical
- Class 2, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 834 total · 367 in this make and model · 569 as pilot in command · 345 in the last 90 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 10 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.