# NTSB DEN84IA041: Boeing 767, N613UA, Denver, CO, December 9, 1983

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: December 9, 1983, 10:08 local (17:08 UTC)
- Place: Denver, CO
- Coordinates: 39.730529, -104.979728 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.7305&lon=-104.9797&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 13 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16268
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN84IA041
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16268/pdf
- Page: https://openairdocs.org/ntsb/DEN84IA041

## Sequence of events

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

- Airframe/component/system failure/malfunction, takeoff - roll/run
  - landing gear,wheel - failure,total (cause)
  - landing gear,wheel - contamination (cause)

## Analysis

ON TAKEOFF ROLL THE NO 3 WHEEL ON THE RIGHT MAIN LANDING GEAR FELL OFF THE ACFT. THE ACFT RETURNED AND LANDED WITHOUT FURTHER INCIDENT. THE WHEEL BEARING WAS FOUND FAILEDDUE TO COSMOLINE CONTAMINATION.

## Aircraft

- Registration: [N613UA](https://openairdocs.org/deregistered/N613UA-2018-01-05), registration cancelled 2018-01-05, S/N 21874, built 1983 (OpenAirDocs)
- Reported make and model: BOEING 767
- Registry model: [Boeing 767-222](https://openairdocs.org/model/boeing-767-222) (registry code 1385122) (OpenAirDocs)
- Registry engine: [Pratt & Whitney JT9D series](https://openairdocs.org/engine/pratt-whitney-jt9d-series) (registry code 52054, turbo-fan) (OpenAirDocs)
- Category: Airplane
- Serial number: 21874
- Engines: unknown UN turbo fan
- Damage: No damage
- Flight: Part 121
- Operator: United Airlines, doing business as United Airlines
- Registered owner: United Airlines
- Airworthiness certificate: Standard, Transport
- Destination: SFO, SAN FANCISCO, CA
- Flight plan: IFR
- Airport: DEN, Stapleton Int'L

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; airline transport; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 1, unknown; seat: left

## Weather

- Conditions: Visual (VMC), Day
- Wind: 360° at 5 knots
- Lowest ceiling: none
- Temperature: 34 °F, dew point 21 °F
- Observed at: DEN

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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