# NTSB DEN86IA235: Lockheed L-1011-385-1, N31001, Denver, CO, August 22, 1986

- Type: NTSB incident investigation
- Classification: Incident · Minor injuries · Incident investigation · Final report
- Date: August 21, 1986, 20:24 local (Aug 22, 1986, 03:24 UTC)
- Place: Denver, CO
- Coordinates: 39.739795, -104.860847 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.7398&lon=-104.8608&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 6 minor, 233 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16866
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN86IA235
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16866/pdf
- Page: https://openairdocs.org/ntsb/DEN86IA235

## Sequence of events

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

- Fire, taxi - from landing
  - fuel system,fuel control - inoperative (cause)
  - emergency procedure - performed, pilot in command
  - exhaust system,stack - fire (cause)

## Analysis

TWA FLT 735 LANDED AT DENVER STAPLETON ARPT. DURING THE TAXI TO THE PASSENGER TERMINAL, A FIRE ERUPTED IN THE TAILPIPE OF THE LEFT ENGINE. THE FLT CREW EXECUTED THE EMERGENCY EVACUATION PROCEDURES. FIRE WAS EXTINGUISHED. WITH NO DAMAGE TO THE ACFT OR ENGINE. POST INCIDENT EXAM REVEALED A MALFUNCTION FUEL FLOW REGULATOR.

## Aircraft

- Registration: N31001 (not matched to a registry record)
- Reported make and model: LOCKHEED L-1011-385-1 (L-1011-385)
- Category: Airplane
- Serial number: 1938-1013
- Airframe hours: 35705
- Engines: ROLLS-ROYCE RB-211-22B 42000 lbs thrust turbo fan
- Damage: No damage
- Fire: On-Ground
- Flight: Part 121
- Registered owner: Interface Group Incoporated
- Airworthiness certificate: Standard, Transport
- Departed: STL, ST. LOUIS, MO
- Flight plan: IFR
- Airport: DEN, Stapleton Int'L

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 56; airline transport; airplane ratings: single-engine land, multi-engine land, single-engine sea; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 14,618 total, 3,474 in this make and model

## Weather

- Conditions: Visual (VMC), Dusk
- Wind: 230° at 6 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 64 °F, dew point 50 °F

## 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 19860821049829I](https://openairdocs.org/incident/19860821049829I), Aug 21, 1986: Lkheed 1011/, Denver, CO. Fire in NR1 engine. Passengers evacuated. Fire put out. Replaced fuel flow regulator.

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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