# NTSB DEN84IA209: Boeing 727-23, N1992, Denver, CO, July 4, 1984

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: July 3, 1984, 23:17 local (Jul 4, 1984, 05:17 UTC)
- Place: Denver, CO
- Coordinates: 39.739295, -104.859222 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.7393&lon=-104.8592&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 75 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16274
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN84IA209
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16274/pdf
- Page: https://openairdocs.org/ntsb/DEN84IA209

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - light condition - night (contributing factor)
  - weather condition - crosswind (contributing factor)
  - weather condition - tailwind (contributing factor)
  - wrong runway - selected, pilot in command (contributing factor)
  - compensation for wind conditions - improper, pilot in command (cause)
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - inadvertent, pilot in command

## Analysis

THE ACFT WENT OFF THE RWY DURING LANDING. THE EXCURSION WAS TO THE LEFT & WAS NOT CORRECTED BEFORE THE ACFT MADE AN EXIT FROM THE RWY. THE CAPTAIN, IN A WRITTEN STATEMENT, SAID THAT HE WAS ANTICIPATING A RIGHT X-WIND BECAUSE HE WAS LANDING ON RWY 26L & THE WIND WAS FROM 020 DEGREES AT 12 KTS. HE HAD ALREADY ABORTED A LANDING ON RWY 17 DUE TO A TAILWIND. THE CAPTAIN OF ANOTHER ACFT WHICH LANDED IN FRONT OF THE INCIDENT ACFT REPORTED A RIGHT X-WIND. AN FAA INSPECTOR, QUALIFIED IN BOEING 727 ACFT, DUPLICATED ALL CONDITIONS OF THE INCIDENT IN A SIMULATOR AND CONCLUDED THAT THE INCIDENT WAS THE RESULT OF IMPROPER TECHNIQUE OR CORRECTIVE ACTION OR A DELAY IN RESPONSE.

## Aircraft

- Registration: [N1992](https://openairdocs.org/deregistered/N1992-2017-05-31), registration cancelled 2017-05-31, S/N 18448, built 1965 (OpenAirDocs)
- Reported make and model: BOEING 727-23
- Registry model: [Boeing 727-23](https://openairdocs.org/model/boeing-727-23) (registry code 1384004) (OpenAirDocs)
- Registry engine: [Pratt & Whitney JT8D-1](https://openairdocs.org/engine/pratt-whitney-jt8d-1) (registry code 52044, turbo-jet) (OpenAirDocs)
- Category: Airplane
- Serial number: 18448
- Engines: P&W JT8D-11 15500 lbs thrust turbo jet
- Damage: Minor damage
- Flight: Part 121
- Registered owner: American Airlines, Inc.
- Airworthiness certificate: Standard, Normal
- Departed: ORD, CHICAGO, IL
- Destination: DEN, DENVER, CO
- Flight plan: IFR
- Airport: DEN, Stapleton Int'L, runway 26L, 10,010 × 150 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 50; airline transport, flight engineer, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 12,625 total, 9,100 in this make and model, 150 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/bright
- Wind: 200° at 12 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 72 °F, dew point 55 °F
- Altimeter: 30.00 inHg
- Observed at: DEN

## Other investigations on N1992 (1)

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.

- [NTSB NYC72AN150](https://openairdocs.org/ntsb/NYC72AN150), Jun 10, 1972: Boeing 727 (N1992), Flushing, NY, minor damage

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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