# NTSB SEA90LA145: Maule M-4-220C, N2007U, Missoula, MT, July 21, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 21, 1990, 12:42 local (18:42 UTC)
- Place: Missoula, MT
- Coordinates: 46.850406, -113.989562 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=46.8504&lon=-113.9896&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report February 12, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 41249
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA90LA145
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/41249/pdf
- Page: https://openairdocs.org/ntsb/SEA90LA145

## Probable cause

PILOT'S FAILURE TO MAINTAIN DIRECTIONAL CONTROL DURING THE LANDING ROLL.

## 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 - turbulence (contributing factor)
  - directional control - not maintained, pilot in command (cause)
  - lack of total experience in type of aircraft, pilot in command (contributing factor)

## Analysis

THE PILOT LOST DIRECTIONAL CONTROL DURING LANDING ROLLOUT AFTER THE RIGHT WING LIFTED. DURING HIS ATTEMPT TO REGAIN CONTROL, THE RIGHT LANDING GEAR COLLAPSED, FOLDING UNDER THE FUSELAGE, AND THE RIGHT WING SUSTAINED SUBSTANTIAL DAMAGE.

## Aircraft

- Registration: [N2007U](https://openairdocs.org/deregistered/N2007U-2018-01-11), registration cancelled 2018-01-11, S/N 2008C, built 1967 (OpenAirDocs)
- Reported make and model: MAULE M-4-220C
- Registry model: [Maule M-4-220C](https://openairdocs.org/model/maule-m-4-220c) (registry code 5460114) (OpenAirDocs)
- Registry engine: [Franklin 6V 350 series](https://openairdocs.org/engine/franklin-6v-350-series) (registry code 27043, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 2008
- Engines: FRANKLIN 6A-350-C2 220 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Robert R. Ream
- Airworthiness certificate: Standard, Normal
- Airport: MS0, Johnson-Bell, runway 29, 9,500 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 53; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 124 total, 16 in this make and model, 76 as pilot in command, 17 in the last 90 days, 16 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 230° at 4 knots
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 75 °F, dew point 43 °F
- Altimeter: 30.00 inHg
- Observed at: MSO

## 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 19900721027599A](https://openairdocs.org/incident/19900721027599A), Jul 21, 1990: Maule M4220C, Missoula, MT, Substantial damage. Lost directional control on landing, side load collapsed tright landing gear.

## Other investigations on N2007U (1)

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 WPR09FA176](https://openairdocs.org/ntsb/WPR09FA176), Apr 1, 2009: Maule M-4-220C (N2007U), Hungry Horse, MT, destroyed, 1 fatal. Probable cause: The pilot's improper decision to continue flight into an area of reduced visibility and snow showers during cruise flight, which resulted in the pilot's spatial disorientation and subsequent loss of…

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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