# NTSB SEA92LA122: North American Navion, N91132, Spokane, WA, June 9, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 8, 1992, 22:25 local (Jun 9, 1992, 05:25 UTC)
- Place: Spokane, WA
- Location: 47.6190° N, 117.5352° W: Placed by OpenAirDocs at SPOKANE INTL (GEG), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.6190&lon=-117.5352&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 31, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 42829
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA92LA122
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/42829/pdf
- Page: https://openairdocs.org/ntsb/SEA92LA122

## Probable cause

THE PARTIAL FAILURE OF THE NOSE GEAR TRUNNION. FACTORS INCLUDE THE PILOT'S DECISION TO LAND WITH THE GEAR IN THE UP POSITION.

## Sequence of events

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

- Nose gear collapsed, landing - flare/touchdown
  - landing gear,nose gear assembly - failure,partial (cause)
- Gear not extended, landing - flare/touchdown
  - wheels up landing - intentional, pilot in command (contributing factor)

## Analysis

THE PILOT OF THE NORTH AMERICAN NAVION HEARD A LOUD POP IN THE AREA OF THE NOSE GEAR WHEEL WELL WHEN HE LOWERED THE NOSE GEAR TO THE RUNWAY DURING A PLANNED FULL-STOP LANDING. AS THE NOSE OF THE AIRCRAFT BEGAN TO SETTLE, THE PILOT EXECUTED A GO-AROUND. THE PILOT OF ANOTHER AIRCRAFT INSPECTED THE GEAR WHILE INFLIGHT, AND REPORTED THAT IT WAS BENT OR COCKED TO THE SIDE. THE NAVION PILOT THEN CHOSE TO LAND WITH ALL GEAR IN THE UP POSITION. THE PILOT MADE A SUCCESSFUL TOUCHDOWN, BUT THE AIRCRAFT WAS DAMAGED BY THE GRINDING ACTION OF THE ASPHALT RUNWAY.

## Aircraft

- Registration: [N91132](https://openairdocs.org/deregistered/N91132-2017-10-06), registration cancelled 2017-10-06, S/N NAV-4-22, built 1946 (OpenAirDocs)
- Reported make and model: NORTH AMERICAN NAVION
- Registry model: [North American NAVION](https://openairdocs.org/model/north-american-navion) (registry code 6150130) (OpenAirDocs)
- Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: NAV-4-22
- Engines: CONTINENTAL TSIO-520-D 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Operator: West, Alvin
- Registered owner: West, Alvin
- Airworthiness certificate: Standard, Utility; Standard, Normal
- Last inspection: Annual, January 2, 2000, 22 hours before
- Departed: 0S7, OROVILLE, WA
- Destination: GEG
- Airport: GEG, Spokane International, runway 21, 9,000 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 57; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 500 total, 400 in this make and model, 500 as pilot in command

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 170° at 6 knots
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 61 °F

## Other investigations on N91132 (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 LAX66D0344](https://openairdocs.org/ntsb/LAX66D0344), Mar 27, 1966: Navion B (N91132), Apple Valley, CA, substantial damage

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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