# NTSB ANC90LA050: Maule M-4, N4619T, Anchorage, AK, March 31, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 31, 1990, 17:54 local (21:54 UTC)
- Place: Anchorage, AK
- Coordinates: 61.199832, -149.82022 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.1998&lon=-149.8202&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 15, 1992
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5349
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC90LA050
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5349/pdf
- Page: https://openairdocs.org/ntsb/ANC90LA050

## Probable cause

THE PILOT'S IMPROPER COMPENSATION FOR WIND CONDITIONS AND FAILURE TO MAINTAIN DIRECTIONAL CONTROL. THE UNFAVORABLE (VARIABLE) WIND AND SNOW COVERED TERRAIN WERE RELATED FACTORS.

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - weather condition - unfavorable wind (contributing factor)
  - compensation for wind conditions - improper, pilot in command (cause)
  - directional control - not maintained, pilot in command (cause)
- Nose over, landing - roll
  - terrain condition - snow covered (contributing factor)

## Analysis

THE PILOT STATED THAT HE WAS UNABLE TO MAINTAIN DIRECTIONAL CONTROL WHILE LANDING IN VARIABLE WIND CONDITIONS. THE AIRPLANE SUBSEQUENTLY WENT OFF THE RUNWAY INTO SNOW, NOSED OVER, AND SUSTAINED SUBSTANTIAL DAMAGE. THE PILOT SAID THAT HIS INABILITY TO MAINTAIN DIRECTIONAL CONTROL, AS WELL AS THE VARIABLE WINDS, RESULTED IN THE ACCIDENT.

## Aircraft

- Registration: [N4619T](https://openairdocs.org/aircraft/N4619T), registered now, S/N 87, built 1965 (OpenAirDocs)
- Reported make and model: MAULE M-4
- Registry model: [Maule M-4](https://openairdocs.org/model/maule-m-4) (registry code 5460104) (OpenAirDocs)
- Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 87
- Engines: CONTINENTAL O-300-A 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Raymond H. Tucker
- Departed: ANC, ANCHORAGE, AK
- Airport: MRI, Merrill Field, runway 33, 2,469 × 60 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 44; private; airplane ratings: single-engine land; medical: class 3, expired; flight hours: 380 total, 228 in this make and model, 317 as pilot in command, 17 in the last 90 days, 9 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 25 statute miles
- Lowest ceiling: 8,000 ft broken
- Temperature: -0 °F, dew point -0 °F
- Observed at: MRI

## 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 19900331008579A](https://openairdocs.org/incident/19900331008579A), Mar 31, 1990: Maule M4, Anchorage, AK, Substantial damage. Lost directional control on first landing from skis to wheels. Left runway and overturned in a snowbank.

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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