# NTSB MIA90LA192: Cessna 402B, N4440K, St. Thomas, September 24, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 24, 1990, 12:24 local (16:24 UTC)
- Place: St. Thomas
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report November 9, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 32707
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA90LA192
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32707/pdf
- Page: https://openairdocs.org/ntsb/MIA90LA192

## Probable cause

SEPARATION OF THE LEFT MAIN LANDING GEAR TORQUE TUBE BRACKET ASSEMBLY DUE TO SHEARED RIVETS FROM A PREVIOUS HARD SIDE LOAD LANDING WHICH WAS NOT REPORTED.

## 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,normal retraction/extension assembly - sheared (cause)
  - proper alignment - not attained, unknown

## Analysis

AFTER TOUCHDOWN WITH THE GEAR DOWN & LOCKED WHILE TAXIING OFF THE RWY, THE LT MAIN LANDING GEAR COLLAPSED. ACCORDING TO THE DIRECTOR OF MAINT., THE LEFT LANDING GEAR BRACKET-ASSY, GEAR TORQUE TURBE, CAME LOOSE AFTER THE RIVETS SHEARED PROBABLY DUE TO A HARD SIDE LOAD LANDING WHICH WAS NOT REPORTED.

## Aircraft

- Registration: [N4440K](https://openairdocs.org/aircraft/N4440K), registered now, S/N 421B0567, built 1974 (OpenAirDocs)
- Reported make and model: CESSNA 402B
- Registry model: [Cessna 421B](https://openairdocs.org/model/cessna-421b) (registry code 2076014) (OpenAirDocs)
- Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 402B-00861
- Airframe hours: 17311
- Engines: CONTINENTAL TSIO-520-E 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Executive/Corporate, Part 91
- Registered owner: Four Star Aviation
- Last inspection: Annual, September 1, 1990, 10 hours before
- Departed: SJU, SAN JUAN, PR
- Destination: STT, ST. THOMAS
- Airport: STT, Cyril E. King, runway 10, 5,348 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; flight hours: 9,230 total, 600 in this make and model, 5,764 as pilot in command, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 30 statute miles
- Lowest ceiling: 12,000 ft broken
- Temperature: 81 °F, dew point 77 °F
- Altimeter: 29.00 inHg
- Observed at: STT

## 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 19900924048929A](https://openairdocs.org/incident/19900924048929A), Sep 24, 1990: Cessna 402B, Charlotte Amali, U.S. Virgin Islands, Substantial damage. Left main gear collapsed turning off runway after landing. Gear bracket assembly came loose from prior side loading

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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