# NTSB ATL83FA073: Cessna 421B, N3380Q, Fort Payne, AL, December 23, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: December 23, 1982, 16:00 local (22:00 UTC)
- Place: Fort Payne, AL
- Coordinates: 34.449665, -85.690429 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=34.4497&lon=-85.6904&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 6 uninjured
- Status: Completed, report December 23, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 70709
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL83FA073
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/70709/pdf
- Page: https://openairdocs.org/ntsb/ATL83FA073

## Sequence of events

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

- Main gear collapsed, landing - roll
  - landing gear,main gear attachment - improper (cause)
  - landing gear,main gear attachment - disconnected (cause)
  - maintenance,installation - improper, other maintenance personnel (cause)

## Analysis

DURING LANDING THE RIGHT MAIN LANDING GEAR SCISSORS BOLT & BUSHING PULLED THROUGH THE SCISSORS MOUNT HOLE ALLOWING THE LANDING GEAR TO ROTATE 90 DEG. AN INCORRECT WASHER (STANDARD 5/16 IN) HAD BEEN INSTALLED IN THE SCISSORS ASSEMBLY DURINGRECENT MAINTENANCE. CESSNA PARTS MANUAL CALLS FOR AN960-5/16 WASHER.

## Aircraft

- Registration: [N3380Q](https://openairdocs.org/deregistered/N3380Q-2012-10-03), registration cancelled 2012-10-03, S/N 421B0264, built 1972 (OpenAirDocs)
- Reported make and model: CESSNA 421B
- Registry model: [Cessna 421B](https://openairdocs.org/model/cessna-421b) (registry code 2076014) (OpenAirDocs)
- Registry engine: [Continental GTSI0-520-F-K](https://openairdocs.org/engine/continental-gtsi0-520-f-k) (registry code 17031, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 421B0264
- Airframe hours: 1885
- Engines: CONTINENTAL GTSIO-520-H 375 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Operator: Truman Hicks Leasing
- Registered owner: Truman Hicks Leasing
- Departed: CHANUTE, KS
- Destination: FORT PAYNE, AL
- Flight plan: IFR
- Airport: 4A9, Isbell Field, runway 22, 3,800 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 33; private; airplane ratings: multi-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 1,851 total, 150 in this make and model, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 130° at 8 knots
- Visibility: 20 statute miles
- Temperature: 149 °F

## 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 19821223066799A](https://openairdocs.org/incident/19821223066799A), Dec 23, 1982: Cessna 421B, Ft Payne, AL, Substantial damage. Right main landing gear collapsed due to incorrect washer P/NAN9605/16 installed in scissors assembly.

## Other investigations on N3380Q (2)

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 FTW85LQG01](https://openairdocs.org/ntsb/FTW85LQG01), Apr 19, 1985: Cessna 421B (N3380Q), Amarillo, TX, substantial damage
- [NTSB SEA77DYA12](https://openairdocs.org/ntsb/SEA77DYA12), Feb 23, 1977: Cessna 421B (N3380Q), Soda Springs, ID, 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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