# NTSB MKC83IA036: Beech B200, N6338T, Chesterfield, MO, December 13, 1982

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: December 13, 1982, 12:22 local (18:22 UTC)
- Place: Chesterfield, MO
- Location: 38.6621° N, 90.6520° W: Placed by OpenAirDocs at SPIRIT OF ST LOUIS (SUS), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.6621&lon=-90.6520&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report December 13, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 70220
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC83IA036
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/70220/pdf
- Page: https://openairdocs.org/ntsb/MKC83IA036

## Sequence of events

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

- Airframe/component/system failure/malfunction, landing - flare/touchdown
  - landing gear,normal retraction/extension assembly - disconnected (cause)
  - gear extension - not possible (cause)
  - inadequate quality control, manufacturer (contributing factor)
- In flight collision with terrain/water, landing - flare/touchdown
  - wheels up landing - performed (contributing factor)

## Analysis

UPON ARRIVAL OVER CHICAGO, IL, THE CREW DISCOVERED THAT THE LANDING GEAR WOULD NOT EXTEND. AFTER NUMEROUS UNSUCCESSFUL ATTEMPTS TO LOWER THE GEAR, THE CREW ELECTED TO RETURN TO THEIR HOME BASE AIRPORT AND MAKE A GEAR UP LANDING. THE LANDING WAS SUCCESSFUL AND THERE WERE NO INJURIES. INVESTIGATION REVEALED THAT A LOCKING NUT HAD BACKED OFF A TAPERED PIN AT THE INBOARD UNIVERSAL JOINT IN THE LEFT MAIN GEAR EXTENSION/RETRACTION TORQUE TUBE. THIS ALLOWED THE TAPERED PIN TO BACK OUT, DISCONNECTING THE TORQUE TUBE FROM THE GEAR DRIVE MOTOR. NO EVIDENCE OF FACTORY TORQUE STRIPPING WAS FOUND ON THE NUT.

## Aircraft

- Registration: N6338T (not matched to a registry record)
- Reported make and model: BEECH B200
- Category: Airplane
- Serial number: BB 1042
- Airframe hours: 222
- Engines: P & W PT6A42 850 horsepower turbo prop
- Damage: Minor damage
- Flight: Personal, Part 91
- Operator: La Barge, Inc.
- Registered owner: La Barge, Inc.
- Departed: SUS, CHESTERFIELD, MO
- Destination: CGX, CHICAGO, IL
- Flight plan: IFR
- Airport: SUS, Spirit Of St. Louis, runway 25, 6,008 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 33; airline transport, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; flight hours: 5,900 total, 600 in this make and model, 5,800 as pilot in command, 150 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 190° at 13 knots
- Visibility: 10 statute miles
- Temperature: 104 °F
- Altimeter: 30.00 inHg
- Observed at: STL

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Incident 19821213069709I](https://openairdocs.org/incident/19821213069709I), Dec 13, 1982: Beech B200, Chesterfield, MO, Minor damage. Unable to extend left main gear. Landed gear up. Locking nut and pin backed off from torque tube u joint.

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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