# NTSB MIA89LA085: Cessna 340A, N5454X, Jacksonville, FL, February 14, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: February 14, 1989, 12:09 local (17:09 UTC)
- Place: Jacksonville, FL
- Location: 30.3363° N, 81.5144° W: Placed by OpenAirDocs at JACKSONVILLE EXEC AT CRAIG (CRG), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=30.3363&lon=-81.5144&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report March 12, 1990
- Report: Approved by Office Director
- NTSB case key (mKey): 32398
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA89LA085
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32398/pdf
- Page: https://openairdocs.org/ntsb/MIA89LA085

## Probable cause

SEIZURE OF THE RIGHT MAIN LANDING GEAR UPPER DOWNLOCK TOP BUSHING, AND THE FAILURE OF OTHER MAINTENANCE PERSONNEL TO PROPERLY RIG THE LANDING GEAR DOWN LIGHT MICRO SWITCHES.

## Sequence of events

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

- Main gear collapsed, taxi - from landing
  - landing gear,gear locking mechanism - seized (cause)
  - maintenance,annual inspection - inadequate, other maintenance personnel (cause)

## Analysis

THE PILOT EXPERIENCED A COLLAPSE OF THE RIGHT MAIN LANDING GEAR DURING TAXI. THE INVESTIGATION REVEALED THAT THE COLLAPSE WAS DUE TO THE SEIZURE OF THE UPPER DOWNLOCK TOP BUSHING. IT ALLOWED THE MAIN LANDING GEAR TO BE RIGGED IMPROPERLY AND NOT BE FULLY DOWN AND LOCKED WHEN THE GEAR DOWN LIGHT WAS ILLUMINATED. THE MECHANIC STATED THAT THE EXPANDED INSPECTION PROCEDURES SPECITY THAT THE LANDING GEAR BUSHING MUST BE FREE.

## Aircraft

- Registration: [N5454X](https://openairdocs.org/aircraft/N5454X), registered now, S/N 340A1512 (OpenAirDocs)
- Reported make and model: CESSNA 340A
- Registry model: [Cessna 340A](https://openairdocs.org/model/cessna-340a) (registry code 2076405) (OpenAirDocs)
- Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 340A1512
- Airframe hours: 1342
- Engines: CONTINENTAL TSIO-520-NB 310 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Eric Friedrich
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, September 23, 1988, 70 hours before
- Departed: BQK, BRUNSWICK, GA
- Destination: CRG, JACKSONVILLE, FL
- Airport: CRG, Craig Field, runway 22, 4,001 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 46; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 2,046 total, 80 in this make and model, 1,800 as pilot in command, 58 in the last 90 days, 5 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 190° at 5 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 79 °F, dew point 63 °F
- Altimeter: 30.00 inHg
- Observed at: CRG

## 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 19890214032329A](https://openairdocs.org/incident/19890214032329A), Feb 14, 1989: Cessna 340A, Jacksonville, FL, Substantial damage. Right main gear collapsed while taxiing after landing. Upper down lock top bushing 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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