# NTSB DEN91LA090: Piper PA-32-300, N4064R, Englewood, CO, June 19, 1991

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 19, 1991, 11:25 local (17:25 UTC)
- Place: Englewood, CO
- Coordinates: 39.640571, -104.989761 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.6406&lon=-104.9898&mi=10
- Phase of flight: [Standing](https://openairdocs.org/ntsb-phases/150) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report March 10, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 18104
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN91LA090
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/18104/pdf
- Page: https://openairdocs.org/ntsb/DEN91LA090

## Probable cause

THE PILOT'S FAILURE TO MAINTAIN VISUAL LOOKOUT.  A FACTOR WAS:  THE PILOT'S IMPROPER USE OF THE THROTTLE CONTROLS AND BRAKES.

## Sequence of events

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

- Loss of control - on ground/water, standing - engine(s) operating
  - visual lookout - not maintained, pilot in command (cause)
  - throttle/power control - improper use of, pilot in command (contributing factor)
  - brakes(normal) - improper use of, pilot in command (contributing factor)
- On ground/water collision with object, taxi
  - object - aircraft parked/standing

## Analysis

AFTER STARTING THE AIRCRAFT ENGINE FOR INTENDED FLIGHT, THE PILOT INADVERTENTLY DROPPED HIS FLIGHT CHARTS AND CHECKLIST TO FLOOR OF THE AIRCRAFT.  THE PILOT REACHED DOWN TO PICK THEM UP AND FAILED TO NOTICE THAT HIS AIRCRAFT WAS ROLLING FORWARD.  HE SAID THAT WHEN HE BECAME AWARE OF THE SITUATION, HE IMPROPERLY APPLIED THE BRAKES AND ADVANCED THE THROTTLE INSTEAD OF RETARDING IT.  BEFORE CORRECTIVE ACTION COULD BE TAKEN, THE AIRCRAFT STRUCK A PARKED AIRCRAFT.

## Aircraft

- Registration: [N4064R](https://openairdocs.org/aircraft/N4064R), registered now, S/N 32-40372, built 1967 (OpenAirDocs)
- Reported make and model: PIPER PA-32-300
- Registry model: [Piper PA-32-300](https://openairdocs.org/model/piper-pa-32-300) (registry code 7103212) (OpenAirDocs)
- Registry engine: [Lycoming TI0-540 series](https://openairdocs.org/engine/lycoming-ti0-540-series) (registry code 41533, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Serial number: 32-40372
- Engines: LYCOMING TIO-540K1A5 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Foothills Flying Club, Inc.
- Registered owner: Foothills Flying Club, Inc.
- Airport: APA, Centennial

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 56; private; airplane ratings: multi-engine land, single-engine land; medical: class 2, valid medical--w/ waivers/lim; flight hours: 688 total, 16 in this make and model, 472 as pilot in command, 6 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 15 knots
- Visibility: 50 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 19910619024139A](https://openairdocs.org/incident/19910619024139A), Jun 19, 1991: Piper PA32300, Denver, CO, Substantial damage. Started engine holding brakes. Dropped maps on floor. Tried to retrieve. Hit throttle,ran into parked aircraft.

## Other investigations on N4064R (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 DEN70DXD17](https://openairdocs.org/ntsb/DEN70DXD17), Mar 22, 1970: Piper PA-32 (N4064R), Akron, CO, substantial 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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