# NTSB ANC90LA123: Piper PA-18-150, N75PC, Big River, AK, July 25, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 25, 1990, 12:30 local (20:30 UTC)
- Place: Big River, AK
- Coordinates: 63.609413, -154.779342 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=63.6094&lon=-154.7793&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 15, 1992
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5409
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC90LA123
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5409/pdf
- Page: https://openairdocs.org/ntsb/ANC90LA123

## Probable cause

THE IMPROPER USE OF BRAKES BY THE PILOT DURING THE LANDING ROLL.

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - brakes(normal) - improper use of, pilot in command (contributing factor)
- Nose over, landing - roll

## Analysis

THE PILOT MADE A WHEELS LANDING ON A SOFT DIRT STRIP. WITH THE DEPARTURE END OF THE STRIP RAPIDLY APPROACHING, HE APPLIED HEAVY BRAKING, CAUSING THE AIRPLANE TO NOSE OVER. THE AIRPLANE WAS EQUIPPED WITH 30 INCH OVERSIZED TIRES.

## Aircraft

- Registration: [N75PC](https://openairdocs.org/aircraft/N75PC), registered now, S/N 18-7609133, built 1976 (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)
- Category: Airplane
- Serial number: 18-7609133
- Engines: LYCOMING O-320 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Rand D. Dawson
- Airworthiness certificate: Standard, Normal
- Departed: MCG, MCGRATH, AK
- Flight plan: VFR
- Airport: NONE

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: front; flight hours: 1,200 total, 1,200 in this make and model, 1,200 as pilot in command, 55 in the last 90 days, 30 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 70 statute miles
- Lowest ceiling: none
- Temperature: 72 °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 19900725032929A](https://openairdocs.org/incident/19900725032929A), Jul 25, 1990: Piper PA18150, Big River Ak, AK, Substantial damage. Used heavy braking during wheel landing on his Private strip to prevent a overrun. Nosed over.

## Other investigations on N75PC (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 IAD80DKM04](https://openairdocs.org/ntsb/IAD80DKM04), Nov 30, 1979: Piper PA-18 (N75PC), Asheboro, NC, 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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