# NTSB DEN90LA118: Cessna 310, N8148M, Ogden, UT, May 28, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 28, 1990, 12:00 local (18:00 UTC)
- Place: Ogden, UT
- Location: 41.1951° N, 112.0122° W: Placed by OpenAirDocs at OGDEN-HINCKLEY (OGD), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.1951&lon=-112.0122&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report November 9, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 17937
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN90LA118
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17937/pdf
- Page: https://openairdocs.org/ntsb/DEN90LA118

## Probable cause

THE FAILURE OF THE MAIN GEAR LOCKING MECHANISM.

## Sequence of events

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

- Main gear collapsed, landing - roll
  - landing gear,gear locking mechanism - failure,partial (cause)
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - runway

## Analysis

THE PRIVATE PILOT LANDED DURING A LOCAL FLIGHT. ACCORDING TO THE PILOT, AFTER ROLLING 300 FEET FOLLOWING TOUCHDOWN, THE LEFT MAIN LANDING GEAR COLLAPSED. THE LEFT WING, HORIZONTAL STABILIZER AND LEFT MAIN FUEL TANK WERE DAMAGED. A POSTACCIDENT INSPECTION REVEALED A RELAY AND SWITCH OUT OF ADJUSTMENT, AND WORKING INTERMITTENTLY. THIS ALLOWED THE GEAR TO INTERRUPT EXTENSION PRIOR TO DOWN LOCK.

## Aircraft

- Registration: [N8148M](https://openairdocs.org/deregistered/N8148M-1991-01-15), registration cancelled 1991-01-15, S/N 310I0148 (OpenAirDocs)
- Reported make and model: CESSNA 310
- Registry model: [Cessna 310I](https://openairdocs.org/model/cessna-310i) (registry code 2074224) (OpenAirDocs)
- Category: Airplane
- Serial number: 310I0148
- Airframe hours: 5790
- Engines: CONTINENTAL IO-470-U 260 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Pierce, Tom
- Registered owner: Pierce, Tommie R.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 10, 1990, 6 hours before
- Departed: ODG
- Destination: ODG
- Airport: OGD, Ogden, runway 16, 5,352 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 46; private; airplane ratings: multi-engine land, single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 4,087 total, 42 in this make and model, 3,947 as pilot in command, 20 in the last 90 days, 20 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 170° at 15 knots, gusting 22
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 84 °F
- Altimeter: 30.00 inHg

## 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 19900528052149A](https://openairdocs.org/incident/19900528052149A), May 28, 1990: Cessna 310I, Ogden, UT, Substantial damage. Left main gear collapsed on landing. Relay switch on gear bellcrank shorted preventing lock down.

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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