# NTSB SEA83LA174: Cessna 310Q, N69604, Spokane, WA, August 11, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 11, 1983, 13:40 local (20:40 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: 4 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 39752
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA83LA174
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/39752/pdf
- Page: https://openairdocs.org/ntsb/SEA83LA174

## Sequence of events

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

- Airframe/component/system failure/malfunction, landing
  - landing gear,normal retraction/extension assembly - binding(mechanical) (cause)
  - maintenance - inadequate, other maintenance personnel (cause)
  - maintenance,annual inspection - inadequate, other maintenance personnel (cause)
  - landing gear,normal retraction/extension assembly - failure,total (contributing factor)

## Analysis

WHILE LANDING WITH A SLIGHT LEFT X-WIND, THE PLT PURPOSELY TOUCHED DOWN ON THE LEFT MAIN GEAR FIRST. MOMENTARILY AFTER TOUCHING DOWN ON THE OTHER MAIN WHEEL, THE RIGHT GEAR COLLAPSED. AT FIRST, THE PLT THOUGHT THE RIGHT TIRE HAD BLOWN OUT & CORRECTIVE ACTION WAS TAKEN, BUT TO NO AVAIL. RUDDER & BRAKE EFFECTIVENESS DIMINISHED & THE ACFT CAME TO REST ON THE RIGHT SIDE OF THE RWY. AN EXAM REVEALED THAT THE RIGHT MAIN LANDING GEAR DRAG LINK UPPER BOLT, PN NAS464P4-26, HAD FAILED. THE BOLT & BUSHING WERE RUSTY & HAD SEIZED IN THE DRAG LINK ASSEMBLY. ALSO, SEVERAL OTHER BOLTS & BUSHINGS THROUGHOUT THE LANDING GEAR ASSEMBLY WERE FOUND TO BE RUSTY & HAD SEIZED. AN ANNUAL HAD BEEN ACCOMPLISHED ON 7/26/83. THE TOTAL FLT TIME ON THE ACFT SINCE THE INSPECTION WAS 20.3 HRS.

## Aircraft

- Registration: [N69604](https://openairdocs.org/aircraft/N69604), registered now, S/N 310Q0812 (OpenAirDocs)
- Reported make and model: CESSNA 310Q
- Registry model: [Cessna 310Q](https://openairdocs.org/model/cessna-310q) (registry code 2074242) (OpenAirDocs)
- Registry engine: [Continental I0-470 series](https://openairdocs.org/engine/continental-i0-470-series) (registry code 17027, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 310Q0812
- Airframe hours: 1582
- Engines: CONTINENTAL IO-470-VO 260 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Registered owner: Pilgrim Sales, Incorporated
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, July 26, 1983, 20 hours before
- Departed: BZN, BOZEMAN, MT
- Destination: GEG, SPOKANE, WA
- Flight plan: IFR
- Airport: GEG, Spokane International, runway 21, 9,000 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 34; flight instructor, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 5,500 total, 182 in this make and model, 5,315 as pilot in command, 145 in the last 90 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 160° at 8 knots
- Visibility: 15 statute miles
- Lowest ceiling: 5,500 ft broken
- Temperature: 66 °F, dew point 52 °F
- Altimeter: 30.00 inHg
- Observed at: GEG

## 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 19830811040579A](https://openairdocs.org/incident/19830811040579A), Aug 11, 1983: Cessna 310Q, Spokane, WA, Substantial damage. Right landing gear collapsed during landing. Gear drag link bolt and bushing was rusty and seized.

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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