# NTSB DEN90LA094: Piper PA-28-181, N8126W, Bountiful, UT, April 23, 1990

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: April 22, 1990, 19:00 local (Apr 23, 1990, 01:00 UTC)
- Place: Bountiful, UT
- Coordinates: 40.889842, -111.929061 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.8898&lon=-111.9291&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 3 uninjured
- Status: Completed, report September 15, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 17919
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN90LA094
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17919/pdf
- Page: https://openairdocs.org/ntsb/DEN90LA094

## Probable cause

THE FLIGHT INSTRUCTOR'S INADEQUATE SUPERVISION OF THE DUAL STUDENT. FACTORS IN THE ACCIDENT WERE THE PREMATURE LIFT-OFF BY DUAL STUDENT, THE ROUGH TERRAIN AND THE FENCE.

## Sequence of events

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

- Overrun, takeoff - aborted
  - lift-off - premature, dual student (contributing factor)
  - stall - inadvertent, dual student
  - supervision - inadequate, pilot in command(cfi) (cause)
  - aborted takeoff - initiated, pilot in command(cfi)
- On ground/water collision with object, takeoff - aborted
  - terrain condition - rough/uneven (contributing factor)
  - object - fence (contributing factor)

## Analysis

DURING INITIAL TAKEOFF ON AN INSTRUCTIONAL FLIGHT, WITH THE 13 HOUR TOTAL TIME STUDENT CONDUCTING THE TAKEOFF, THE AIRCRAFT BECAME AIRBORNE THEN SETTLED BACK TO THE RUNWAY. THE 509 HOUR TOTAL TIME FLIGHT INSTRUCTOR TOOK CONTROL AND ABORTED THE TAKEOFF BUT WAS UNABLE TO STOP ON THE REMAINING RUNWAY. THE AIRCRAFT EXITED THE END OF THE RUNWAY, WENT THROUGH TWO FENCES, ACROSS A ROAD AND CAME TO REST IN A PARKING LOT.

## Aircraft

- Registration: [N8126W](https://openairdocs.org/deregistered/N8126W-1992-12-28), registration cancelled 1992-12-28, S/N 288090153 (OpenAirDocs)
- Reported make and model: PIPER PA-28-181
- Registry model: [Piper PA-28-181](https://openairdocs.org/model/piper-pa-28-181) (registry code 7102807) (OpenAirDocs)
- Category: Airplane
- Serial number: 288090153
- Engines: LYCOMING O360-A4M 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Stead, Robert T.
- Registered owner: Unknown
- Departed: BTF
- Destination: BTF
- Airport: BTF, Sky Paar Airport, runway 34, 4,700 × 60 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 35; commercial, flight instructor; airplane ratings: single-engine land; instrument ratings: airplane; medical: unknown; seat: left; flight hours: 509 total, 40 in this make and model, 393 as pilot in command, 253 in the last 90 days, 105 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 310° at 9 knots
- Visibility: 20 statute miles
- Lowest ceiling: 5,500 ft overcast
- Temperature: -0 °F, dew point -0 °F
- Observed at: SLC, 10 nm away

## 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 19900422010559A](https://openairdocs.org/incident/19900422010559A), Apr 22, 1990: Piper PA28181, Bountiful, UT, Substantial damage. Settled after liftoff,CFI took over. Aborted,unable to stop ran off end through fences, rough terrain.

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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