- Date
- May 12, 1994, 18:45 local (23:45 UTC)
- Place
- Chippewa Falls, WI
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Initial climb
- Aircraft
- N6872FCessna 150F
- Weather
- Visual (VMC) · Day
- Status
- Completed · report January 12, 1995
- Report
- Approved by Office Director
- FAA report
- 19940512010669A
- Case key
- 9526
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 loss of engine power due to a binding carburetor heat door.
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 flight instructor and student pilot both reported a partial loss of engine power just after takeoff. During the forced landing the nose gear sheared off, and the airplane nosed-over. FAA inspectors examined and ran the engine. During the engine examination, the carburetor heat door was found to be binding and could not be fully turned off.
Factual narrative
On May 12, 1994, about 1845 central daylight time, a Cessna 150F, N6872F, sustained substantial damage in a hard landing and nose- over following a loss of engine power on takeoff at a private airstrip near Chippewa Falls, Wisconsin. Neither the certified flight instructor, nor the student pilot were injured. No flight plan was filed for the instructional flight, and visual meteorological conditions prevailed at the time.
The flight instructor and the student both stated the engine had a partial loss of power shortly after takeoff, and the airplane settled back to the runway. The nose landing gear sheared off and the airplane nosed-over.
Two Federal Aviation Administration Inspectors examined and ran the engine. The inspectors found the carburetor heat control was actuated and could not be turned completely off. The carburetor heat door was catching on a nut which allowed the door to have a limited range of operation.
Aircraft
- Registration
- N6872F
- Reported as
- Cessna 150F
- Category
- Airplane
- Serial number
- 15063472
- Airframe hours
- 1,816
- Engine
- Continental O-200-A, 100 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Registered owner
- Bernardo A. Kuhlman
- Airworthiness certificate
- Standard, Utility
- Last inspection
- Annual · July 29, 1993 · 17 hours before
- Airport
- NONE · Kuhlman (Pvt), runway 33, 1,600 × 75 ft, grass/turf
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
- 52
- Certificates
- Commercial, Flight instructor
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Seat
- Right
- Flight hours
- 1,785 total · 1,720 as pilot in command · 28 in the last 90 days · 9 in the last 30 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 310° at 3 knots
- Visibility
- 20 statute miles
- Lowest ceiling
- None
- Temperature
- 66 °F, dew point 36 °F
- Altimeter
- 30.00 inHg
- Observed at
- EAU, 12 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.
Other investigations on N6872F · 2
Matched to the same aircraft by N-number and date.