# NTSB ANC91LA025: Cessna 172-P, N63541, Anchorage, AK, February 7, 1991

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: February 7, 1991, 15:42 local (19:42 UTC)
- Place: Anchorage, AK
- Coordinates: 61.220771, -149.849304 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.2208&lon=-149.8493&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report March 9, 1993
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5517
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC91LA025
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5517/pdf
- Page: https://openairdocs.org/ntsb/ANC91LA025

## Probable cause

THE PILOT'S FAILURE TO MAINTAIN DIRECTIONAL CONTROL OF THE AIRPLANE DURING THE TAKEOFF ROLL.  CONTRIBUTING TO THE ACCIDENT WAS THE TERRAIN (SNOWBANK).

## Sequence of events

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

- Loss of control - on ground/water, takeoff - roll/run
  - directional control - not maintained, pilot in command (cause)
- On ground/water encounter with terrain/water, takeoff - roll/run
  - terrain condition - snowbank (contributing factor)
- Nose over, takeoff - roll/run

## Analysis

AFTER TOUCHDOWN ON THE RUNWAY AND DURING THE TAKEOFF ROLL, THE AIRPLANE EXITED THE LEFT SIDE OF THE RUNWAY, STRUCK A SNOWBANK, AND NOSED OVER ON ITS BACK.  THE PILOT STATED THAT DURING THE TAKEOFF ROLL, HE LOST DIRECTIONAL CONTROL OF THE AIRPLANE DUE TO 'P' FACTOR.

## Aircraft

- Registration: [N63541](https://openairdocs.org/deregistered/N63541-2017-10-30), registration cancelled 2017-10-30, S/N 17275449, built 1981 (OpenAirDocs)
- Reported make and model: CESSNA 172-P
- Registry model: [Cessna 172P](https://openairdocs.org/model/cessna-172p) (registry code 2072436) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 17275449
- Airframe hours: 6046
- Engines: LYCOMING O-320-D2J 160 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, February 1, 1991, 5 hours before
- Flight plan: Company VFR
- Airport: MRI, Merrill, runway 6, 4,000 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; private; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 37 total, 3 in this make and model, 33 as pilot in command, 19 in the last 90 days, 4 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 360° at 5 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 3 °F, dew point 1 °F
- Altimeter: 30.00 inHg
- Observed at: MRI, 1 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 (OpenAirDocs).

- [Accident 19910207002979A](https://openairdocs.org/incident/19910207002979A), Feb 7, 1991: Cessna 172P, Anchorage, AK, Substantial damage. Lost control on a touch and go. Veered off runway into a snowbank and nosed over.

## Other investigations on N63541 (2)

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.

- [NTSB ANC16FA019](https://openairdocs.org/ntsb/ANC16FA019), Apr 20, 2016: Cessna 172 (N63541), Chugiak, AK, substantial damage, 4 fatal. Probable cause: The in-flight collision with one or more large birds (Bald Eagle), which resulted in a loss of airplane control.
- [NTSB ANC03LA069](https://openairdocs.org/ntsb/ANC03LA069), Jul 4, 2003: Cessna 172 (N63541), Seldovia, AK, substantial damage. Probable cause: The failure of company maintenance personnel to properly maintain the airplane's brake system, which resulted in a loss of the right brake during landing roll due to a chafed brake line.

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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