# NTSB DEN89LA169: Piper PA-34-200T, N6144H, Salt Lake City, UT, July 14, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 14, 1989, 06:57 local (12:57 UTC)
- Place: Salt Lake City, UT
- Coordinates: 40.8092, -111.940483 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.8092&lon=-111.9405&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report June 28, 1991
- Report: Approved by Office Director
- NTSB case key (mKey): 17746
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN89LA169
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17746/pdf
- Page: https://openairdocs.org/ntsb/DEN89LA169

## Probable cause

THE PILOT'S IMPROPER USE OF THE PARKING BRAKE AND HIS DELAY IN ABORTING THE TAKEOFF.  FACTORS RELATED TO THE ACCIDENT WERE:  THE FENCE & VEHICLE.

## Sequence of events

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

- Overrun, takeoff - aborted
  - landing gear,parking brake - engaged
  - parking brakes - improper use of, pilot in command (cause)
  - aborted takeoff - delayed, pilot in command (cause)
- On ground/water collision with object, takeoff - aborted
  - object - fence (contributing factor)
  - object - vehicle (contributing factor)

## Analysis

THE PLT RPRTD THAT DURING THE TAKEOFF ROLL, THE ACFT ACCELERATED TO ABOUT 65 KTS.  HOWEVER, AS HE ROTATED THE PLANE FOR TAKEOFF, IT BEGAN TO SLOW & VEER TO THE LEFT.  THE PLT REDUCED POWER TO ABORT & REGAINED DIRECTIONAL CONTROL, BUT THE BRAKES WERE INEFFECTIVE IN STOPPING.  SUBSEQUENTLY, THE ACFT CONTD OFF THE END OF THE RWY, THEN HIT A FENCE & A PARKED VEHICLE.  THE PLT BELIEVED THAT WHEN HE RELEASED THE PARKING BRAKE, IT DID NOT FULLY DISENGAGE, THEN HEAT BUILT UP AS THE BRAKES WERE DRAGGING.  AN EXAM OF THE BRAKES CONFIRMED THAT HEAT DAMAGE HAD OCCURRED.

## Aircraft

- Registration: [N6144H](https://openairdocs.org/deregistered/N6144H-1992-08-17), registration cancelled 1992-08-17, S/N 347870054 (OpenAirDocs)
- Reported make and model: PIPER PA-34-200T
- Registry model: [Piper PA-34-200T](https://openairdocs.org/model/piper-pa-34-200t) (registry code 7103406) (OpenAirDocs)
- Category: Airplane
- Serial number: 7870054
- Airframe hours: 4785
- Engines: CONTINENTAL L/TSIO-360 200 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Operator: Alpine Aviation, doing business as Alpine Air
- Registered owner: Lunberg A. James
- Airworthiness certificate: Standard, Normal
- Last inspection: AAIP, June 13, 1989, 55 hours before
- Departed: SLC
- Destination: SGU, ST GEORGE, UT
- Flight plan: Company VFR
- Airport: SLC, Salt Lake City Intl, runway 14, 5,295 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 25; airline transport; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 2,770 total, 15 in this make and model, 2,680 as pilot in command, 320 in the last 90 days, 97 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 170° at 4 knots
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 61 °F, dew point 52 °F
- Altimeter: 30.00 inHg
- Observed at: SLC

## 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 19890714022489A](https://openairdocs.org/incident/19890714022489A), Jul 14, 1989: Piper PA34200T, Salt Lake City, UT, Substantial damage. Not accelerating on takeoff, aborted and ran off end of runway. Hit fence and a van. Parking brake not released.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.