- Date
- December 2, 1995, 14:00 local (20:00 UTC)
- Place
- Collinsville, OK
- Injuries
- 1 minor
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N236CDAviat A-1
- Weather
- Visual (VMC) · Day
- Status
- Completed · report May 17, 1996
- Report
- Approved by Office Director
- FAA report
- 19951202039479A
- Case key
- 19725
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 pilot's improper planning/decision, his failure to periodically clear the engine during the glide, and failure to see-and-avoid the transmission line during the approach for an emergency landing.
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 while approaching his private airstrip to land, he reduced the engine power to idle, 'pulled on the carburetor heat,' and glided for 3 to 5 minutes. He also reported that he never 'cleared his engine' during this glide. Subsequently, he realized the approach would be 'short' and that additional power would be needed to reach the airstrip. He moved the throttle forward, but there was no increased power response. The pilot further stated that the airplane was very low to the ground, and there was not enough room to maneuver. During a forced landing, the airplane impacted transmission wires and then the ground. The temperature and dew point were 75 and 53 degrees, respectively. According to icing probability charts, conditions were favorable for carburetor ice.
Factual narrative
On December 2, 1995, at 1400 central standard time, an Aviat A-1, N236CD, registered to and operated by a private owner under Title 14 CFR Part 91 was substantially damaged during a forced landing following a power loss near Collinsville, Oklahoma. The private pilot sustained minor injuries. Visual meteorological conditions prevailed for the cross country flight that originated at Vinita, Oklahoma, approximately 45 minutes before the accident. No flight plan was filed.
The pilot reported in his Pilot/Operator Report and during a telephonic interview with the investigator-in-charge that he was approaching his private airstrip to land. He reduced the engine power to idle, pulled on the carburetor heat, and glided for 3 to 5 minutes during the approach for landing (the pilot reported that he never "cleared his engine" during this glide). He realized that he was "short", and needed power to make the airstrip. He moved the throttle forward and there was no increased power response. The pilot further stated that he was very low to the ground and had no room to maneuver. During the forced landing, the airplane impacted transmission wires and the ground.
Evaluation of the weather, at the time of the accident, revealed a temperature of 75 degrees and dew point of 53 degrees. The enclosed icing probability curve chart indicates that this float type carbureted engine was being operated in a region of serious carburetor icing conditions.
Aircraft
- Registration
- N236CD
- Reported as
- Aviat A-1
- Category
- Airplane
- Serial number
- 1219
- Airframe hours
- 134
- Engine
- Lycoming O-360-C1G, 180 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Harry R. Humphrey
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · October 15, 1994 · 25 hours before
- Departed
- HO4 · Vinita, OK
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
- 70
- Certificates
- Commercial, Private, Flight engineer
- Airplane ratings
- Single-engine land
- Medical
- Unknown, Expired
- Seat
- Front
- Flight hours
- 5,000 total · 3 in the last 90 days · 2 in the last 30 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 210° at 20 knots, gusting 25
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 75 °F, dew point 54 °F
- Altimeter
- 29.00 inHg
- Observed at
- TUL, 18 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.