# NTSB DEN91LA131: Piper PA-31T-620, N2FJ, Santa Fe, NM, September 22, 1991

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 22, 1991, 15:00 local (21:00 UTC)
- Place: Santa Fe, NM
- Coordinates: 35.739738, -105.860801 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.7397&lon=-105.8608&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report April 8, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 18136
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN91LA131
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/18136/pdf
- Page: https://openairdocs.org/ntsb/DEN91LA131

## Probable cause

INADVERTENT DEACTIVATION OF AIRCRAFT BRAKES BY UNQUALIFIED PERSON.

## Sequence of events

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

- On ground/water collision with object, taxi
  - object - aircraft parked/standing
  - brakes(normal) - inadvertent deactivation, unqualified person (cause)

## Analysis

AS THE PILOT APPROACHED THE AIRPLANE, HE NOTICED THE OWNER HAD STARTED THE RIGHT ENGINE.  THE OWNER WAS NOT A CERTIFICATED PILOT BUT HAD TAKEN SOME FLYING LESSONS.  THE PILOT REMOVED THE NOSEWHEEL CHOCK IN PREPARATION FOR DEPARTURE.  THE AIRPLANE STARTED MOVING.  THE PILOT TRIED PUSHING ON THE AIRPLANE BUT TO NO AVAIL.  THE AIRPLANE ROLLED INTO TWO PARKED AIRPLANES.

## Aircraft

- Registration: [N2FJ](https://openairdocs.org/deregistered/N2FJ-2016-08-23), registration cancelled 2016-08-23, S/N 31T-7620050, built 1976 (OpenAirDocs)
- Reported make and model: PIPER PA-31T-620
- Registry model: [Piper PA-31T](https://openairdocs.org/model/piper-pa-31t) (registry code 7103124) (OpenAirDocs)
- Registry engine: [Pratt & Whitney Canada PT6A-60A](https://openairdocs.org/engine/pratt-whitney-canada-pt6a-60a) (registry code 52043, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Serial number: 31T-7620050
- Engines: P&W PT6A-28 620 horsepower turbo prop
- Damage: Substantial damage
- Flight: Business, Part 91
- Operator: Brazos Roofing Intl., Inc.
- Registered owner: Brazos Roofing Intl., Inc.
- Destination: ACT, WACO, TX
- Airport: SAF, Santa Fe Municipal

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 30; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; flight hours: 4,250 total, 450 in this make and model, 4,100 as pilot in command, 130 in the last 90 days, 50 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 150° at 15 knots
- Visibility: 40 statute miles
- Lowest ceiling: none
- Temperature: -0 °F, dew point -0 °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).

- [Accident 19910922044519A](https://openairdocs.org/incident/19910922044519A), Sep 22, 1991: Piper PA31T, Santa Fe, NM, Substantial damage. Passenger owner started right engine. Pilot removed chock. No brakes set. Aircraft ran into two parked aircraft.

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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