# NTSB DEN82IA154: Boeing 737-291, N7356F, Denver, CO, August 6, 1982

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: August 5, 1982, 18:01 local (Aug 6, 1982, 00:01 UTC)
- Place: Denver, CO
- Coordinates: 39.760715, -104.920181 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.7607&lon=-104.9202&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 102 uninjured
- Status: Completed, report August 5, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 70457
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN82IA154
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/70457/pdf
- Page: https://openairdocs.org/ntsb/DEN82IA154

## 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 - fatigue (cause)
  - landing gear,tire - separation

## Analysis

THE CAPTAIN SAID HE FELT A "THUMP" AND THE AIRCRAFT SLUMPED TO THE LEFT AS IT WAS ROTATED FOR TAKEOFF. AT THIS POINT, THE AIRCREW WERE COMMITTED TO CONTINUE THE TAKEOFF WHICH ACCOMPLISHED SUCCESSFULLY. A LOW PASS WAS MADE FOR TOWER PERSONNEL TO CHECK THE AIRCRAFT. THEY CONFIRMED THAT THE LEFT OUTBOARD TIRE WAS MISSING AND THE LEFT INBOARD TIRE APPEARED TO BE FLAT. THE PLANE WAS FLOWN FOR 2 HRS, 20 MIN TO CONSUME FUEL AND THEN IT WAS LANDED SUCCESSFULLY. AN INVESTIGATION REVEALED THAT THE WHEEL BEAD FLANGE (RIM) OF THE LEFT OUTBOARD WHEEL, PN 2601571-1, HAD FAILED FROM FATIGUE. THE CRACK ORIGINATED AT THE INSIDE DIAMETER OF THE RIM IN AN AREA OF LOCALIZED CORROSION PITTING. THE LEFT OUTBOARD TIRE HAD COME OFF, AND DURING LANDING, THE LEFT INBOARD WHEEL WAS BADLY DAMAGED. ALSO, THERE WAS MINOR DAMAGE AND SCUFF MARKS IN THE VICINITY OF THE LEFT MAIN GEAR.

## Aircraft

- Registration: N7356F (not matched to a registry record)
- Reported make and model: BOEING 737-291
- Category: Airplane
- Serial number: 22742
- Airframe hours: 625
- Engines: P & W JT8D-17 16000 lbs thrust turbo fan
- Damage: Minor damage
- Flight: Part 121
- Operator: Frontier Airlines, Inc.
- Registered owner: Frontier Airlines, Inc.
- Departed: DEN, DENVER, CO
- Destination: ATL, ATLANTA, GA
- Flight plan: IFR
- Airport: DEN, Stapleton International, runway 17L, 12,000 × 200 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 47; airline transport, commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; flight hours: 12,444 total, 3,204 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 110° at 10 knots
- Visibility: 65 statute miles
- Lowest ceiling: 25,000 ft broken
- Temperature: 190 °F
- Altimeter: 30.00 inHg
- 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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