# NTSB DEN90LA148: Piper PA24-250, N6391P, Broomfield, CO, June 29, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 29, 1990, 09:15 local (15:15 UTC)
- Place: Broomfield, CO
- Coordinates: 39.88972, -105.10913 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.8897&lon=-105.1091&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report September 15, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 17963
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN90LA148
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17963/pdf
- Page: https://openairdocs.org/ntsb/DEN90LA148

## Probable cause

THE FAILURE OF THE PILOT TO EXTEND THE LANDING GEAR FOR LANDING. CONTRIBUTING FACTORS WERE THE PILOT DIVERTING HIS ATTENTION FROM THE TASK AT HAND AND FAILURE TO USE A CHECKLIST.

## Sequence of events

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

- Gear not extended, approach - vfr pattern - final approach
  - checklist - not used, pilot in command (contributing factor)
  - diverted attention, pilot in command (contributing factor)
  - wheels up landing - inadvertent, pilot in command
  - gear extension - not performed, pilot in command (cause)
- Hard landing, landing

## Analysis

THE PILOT, WITH HIS PASSENGER/SON, WAS IN THE LANDING PATTERN AT JEFFERSON COUNTY AIRPORT, BROOMFIELD, COLORADO. HE SAID THAT HE WAS DISTRACTED BY ANOTHER AIRCRAFT IN THE LANDING PATTERN AND FORGOT TO LOWER THE LANDING GEAR. THE AIRCRAFT LANDED WITH THE GEAR UP.

## Aircraft

- Registration: [N6391P](https://openairdocs.org/aircraft/N6391P), registered now, S/N 24-1501 (OpenAirDocs)
- Reported make and model: PIPER PA24-250
- Registry model: [Piper PA-24-250](https://openairdocs.org/model/piper-pa-24-250) (registry code 7102404) (OpenAirDocs)
- Registry engine: [Lycoming 0-540 series](https://openairdocs.org/engine/lycoming-0-540-series) (registry code 41532, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 24-1501
- Engines: LYCOMING O-540-A1D5 250 horsepower reciprocating
- Damage: Substantial damage
- Fire: On-Ground
- Flight: Personal, Part 91
- Registered owner: David R. Tobler
- Departed: ZV2, LONGMONT, CO
- Airport: BJC, Jefferson County, runway 29R, 9,000 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 49; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; flight hours: 695 total, 6 in this make and model, 565 as pilot in command, 6 in the last 90 days, 4 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 80° at 4 knots
- Visibility: 40 statute miles
- Lowest ceiling: none
- Temperature: -0 °F, dew point -0 °F
- Observed at: BJC

## FAA reports on this event (1)

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

- [Accident 19900629023079A](https://openairdocs.org/incident/19900629023079A), Jun 29, 1990: Piper PA24250, Denver, CO, Substantial damage. Landed gear up. Had failed to assure gear down or use a checklist.

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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