# NTSB ANC92LA017: Cessna 172, N6742A, Moose Pass, AK, November 11, 1991

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: November 11, 1991, 14:15 local (18:15 UTC)
- Place: Moose Pass, AK
- Coordinates: 60.569561, -149.44905 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=60.5696&lon=-149.4490&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 4, 1992
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5674
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC92LA017
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5674/pdf
- Page: https://openairdocs.org/ntsb/ANC92LA017

## Probable cause

THE PILOT'S PREMATURE LIFT-OFF, CAUSING THE AIRPLANE TO SETTLE BACK TO THE GROUND.  CONTRIBUTING TO THE ACCIDENT WAS THE PILOT'S LOSS OF DIRECTIONAL CONTROL AFTER SETTLING BACK ON THE RUNWAY, DUE TO HIS VISIBILITY BEING RESTRICTED BY FROST ON THE WINDSHIELD.

## Sequence of events

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

- Altitude deviation,uncontrolled, takeoff - initial climb
  - lift-off - premature, pilot in command (cause)
- Loss of control - on ground/water, landing - roll
  - directional control - not maintained, pilot in command (contributing factor)
  - visual lookout - not possible, pilot in command (contributing factor)
- On ground/water collision with object, landing - roll
  - object - tree(s)

## Analysis

THE PRIVATE PILOT STATED THAT HE GOT THE AIRPLANE OFF PREMATURELY, THEN IT SETTLED BACK TO THE GROUND.  THE AIRPLANE THEN LEFT THE RUNWAY AND RAN INTO THE TREES.  THE PILOT SAID HE COULD NOT SEE THE EDGE OF THE RUNWAY BECAUSE OF FROST ON THE INSIDE OF THE WINDSHIELD.

## Aircraft

- Registration: [N6742A](https://openairdocs.org/aircraft/N6742A), registered now, S/N 28842, built 1956 (OpenAirDocs)
- Reported make and model: CESSNA 172
- Registry model: [Cessna 172](https://openairdocs.org/model/cessna-172) (registry code 2072402) (OpenAirDocs)
- Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 28842
- Airframe hours: 3965
- Engines: CONTINENTAL O-300B 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Jaffa, Bruce E.
- Registered owner: Jaffa, Bruce E.
- Last inspection: Annual, May 18, 1991, 580 hours before
- Departed: NONE, MOOSE PASS, AK
- Destination: MRI, ANCHORAGE, AK
- Airport: NONE, Moose Pass, runway 33, 930 × 60 ft, snow

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 45; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 145 total, 41 in this make and model, 83 as pilot in command, 32 in the last 90 days, 2 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 40 statute miles
- Lowest ceiling: none
- Temperature: 19 °F

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19911111051979A](https://openairdocs.org/incident/19911111051979A), Nov 11, 1991: Cessna 172, Moose Pass, AK, Substantial damage. Settled after liftoff. Ran into trees at end of short strip. Failed to remove frost from airframe and windshield.

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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