# NTSB DEN87LA096: Piper PA-18-150, N1851P, Glenrock, WY, April 14, 1987

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 14, 1987, 09:00 local (15:00 UTC)
- Place: Glenrock, WY
- Coordinates: 42.849601, -105.849647 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.8496&lon=-105.8496&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report November 8, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 17200
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN87LA096
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17200/pdf
- Page: https://openairdocs.org/ntsb/DEN87LA096

## Sequence of events

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

- Loss of control - on ground/water, takeoff - roll/run
  - directional control - not maintained, pilot in command (cause)
- Dragged wing,rotor,pod,float or tail/skid, takeoff - roll/run

## Analysis

THE PRIVATE PLT PLANNED A TAKEOFF FROM THE UNIMPROVED RANCH RWY FOR A LOCAL FLT. ELEVATOR TRIM WAS NOT SET FOR TAKEOFF ACCORDING TO THE PLT. WHEN THE TAILWHEEL CAME UP DURING THE TAKEOFF ROLL, THE ACFT SWERVED LEFT, AND THE PLT ATTEMPTED TO CORRECT WITH RUDDER. DIRECTIONAL CONTROL WAS LOST. A GROUND LOOP RESULTED IN WING CONTACT WITH THE RWY. SUBSTANTIAL DAMAGE WAS DONE TO THE RIGHT WING AND RIGHT MAIN LANDING GEAR.

## Aircraft

- Registration: [N1851P](https://openairdocs.org/deregistered/N1851P-2009-07-09), registration cancelled 2009-07-09, S/N 18-4116, built 1955 (OpenAirDocs)
- Reported make and model: PIPER PA-18-150
- Registry model: [Piper PA-18-150](https://openairdocs.org/model/piper-pa-18-150) (registry code 7101828) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1019-27
- Airframe hours: 6200
- Engines: LYCOMING O-320-A2B 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Bob Boner
- Registered owner: Bob Boner
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, March 5, 1986, 42 hours before
- Airport: runway 26, 2,200 ×  ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 27; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: front; flight hours: 120 total, 74 in this make and model, 63 as pilot in command, 7 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 5 knots
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 50 °F
- Altimeter: 30.00 inHg

## 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 19870414031859A](https://openairdocs.org/incident/19870414031859A), Apr 14, 1987: Piper PA18150, Glenrock, WY, Substantial damage. The aircraft veered off the turf runway on takeoff. The pilot cited lack of recent experience.

## Other investigations on N1851P (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 DEN68D0023](https://openairdocs.org/ntsb/DEN68D0023), Jul 2, 1967: Piper PA-18 (N1851P), Garrett, WY, 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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