- Date
- February 10, 1992, 16:15 local (23:15 UTC)
- Place
- Parshall, CO
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N737BYCessna 172N
- Weather
- Visual (VMC) · Day
- Status
- Completed · report June 30, 1993
- Report
- Approved by Office Director
- FAA report
- 19920210014209A
- Case key
- 18197
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 NTSB’s determination of the probable cause, and any contributing factors.
Improper use of powerplant controls by the duel student and inadequate supervision by the CFI. Factors were: carburetor heat not used, deep snow covered terrain, and carburetor ice conditions.
Analysis
The student pilot descended 1000 feet and made a practice flare for landing over snow covered terrain. When the throttle was opened, the engine sputtered. The instructor said they did not use carburetor heat but the mixture had been leaned. Additionally, neither student nor instructor 'cleared the engine' during the descent. The instructor surmised the engine had 'loaded up.' The nose gear collapsed in the deep snow.
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.
Aircraft
- Registration
- N737BY
- Reported as
- Cessna 172N
- Category
- Airplane
- Serial number
- 17269302
- Airframe hours
- 3,932
- Engine
- Lycoming O-320-YHH2AD, 160 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Operator
- Jsc Aircraft Service
- Registered owner
- John D. Burrington
- Airworthiness certificate
- Standard, Normal; Standard, Utility
- Last inspection
- 100 hour · December 9, 1991 · 50 hours before
- Departed
- 20V · Kremmling, CO
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
- 32
- Certificates
- Commercial, Flight instructor
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--no waivers/lim.
- Seat
- Right
- Flight hours
- 406 total · 315 in this make and model · 272 as pilot in command · 61 in the last 90 days · 29 in the last 30 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 100° at 5 knots
- Visibility
- 25 statute miles
- Lowest ceiling
- 6,000 ft broken
- Temperature
- 32 °F, dew point 23 °F
- Altimeter
- 30.00 inHg
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.