# NTSB NYC92LA109: Cessna 150L, N1793Q, Gettysburg, PA, June 25, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 25, 1992, 11:15 local (15:15 UTC)
- Place: Gettysburg, PA
- Coordinates: 39.830215, -77.229888 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.8302&lon=-77.2299&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 28, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 37165
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC92LA109
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/37165/pdf
- Page: https://openairdocs.org/ntsb/NYC92LA109

## Probable cause

THE STUDENT PILOT'S DELAYED ACTION IN APPLYING CARBURETOR HEAT DURING CRUISE, WHICH RESULTED IN A LOSS OF ENGINE POWER DUE TO CARBURETOR ICE. FACTORS IN THIS ACCIDENT WERE: WEATHER CONDITIONS CONDUCIVE FOR CARBURETOR ICING, THE PILOT'S LACK OF TOTAL FLYING EXPERIENCE AND THE ROUGH TERRAIN.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power(partial) - nonmechanical, cruise
  - weather condition - carburetor icing conditions (contributing factor)
  - induction air control/system - ice
  - carburetor heat - delayed, pilot in command (cause)
  - precautionary landing - initiated, pilot in command
- Forced landing, descent - emergency
  - terrain condition - rough/uneven (contributing factor)
  - landing gear,nose gear - collapsed
- Hard landing, descent - emergency

## Analysis

THE STUDENT PILOT REPORTED THAT THE ENGINE BEGAN TO RUN ROUGH DURING CRUISE FLIGHT, APPROXIMATELY 30 MINUTES AFTER TAKE OFF.  SUSPECTING CARBURETOR ICE THE STUDENT PILOT THEN APPLIED CARBURETOR HEAT.  WHEN THE APPLICATION OF CARBURETOR HEAT FAILED TO IMMEDIATELY CORRECT THE ROUGH RUNNING ENGINE, THE STUDENT PILOT DECIDED TO LAND THE AIRPLANE IN AN EMPTY FIELD.  UPON TOUCHDOWN IN THE FIELD, THE AIRPLANE NOSE WHEEL STRUCK A HOLE CAUSING THE AIRPLANE TO FLIP OVER.  ACCORDING TO THE ICING PROBABILITY CURVES, CONDITIONS WERE FAVORABLE FOR THE FORMATION OF MODERATE ICING AT CRUISE POWER.

## Aircraft

- Registration: [N1793Q](https://openairdocs.org/aircraft/N1793Q), registered now, S/N 15073093, built 1971 (OpenAirDocs)
- Reported make and model: CESSNA 150L
- Registry model: [Cessna 150L](https://openairdocs.org/model/cessna-150l) (registry code 2071826) (OpenAirDocs)
- Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 15073093
- Engines: CONTINENTAL O-200-A 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Eagle Air Inc
- Registered owner: Eagle Air Inc
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, January 2, 2000
- Departed: HGR, HAGERSTOWN, MD
- Destination: AVP, WILKES-BARRE, PA
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; student; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 45 total, 45 in this make and model, 5 as pilot in command, 45 in the last 90 days, 45 in the last 30 days, 45 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 300° at 12 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 72 °F, dew point 57 °F
- Altimeter: 29.00 inHg
- Observed at: MDT, 30 nm away

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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