# NTSB SEA87LA006: Piper PA-18-150, N6191D, Petersburg, AK, October 8, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: October 8, 1986, 15:00 local (23:00 UTC)
- Place: Petersburg, AK
- Coordinates: 57.049705, -132.619628 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=57.0497&lon=-132.6196&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 40551
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA87LA006
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40551/pdf
- Page: https://openairdocs.org/ntsb/SEA87LA006

## Sequence of events

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

- Nose over, landing - roll
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command (cause)
  - terrain condition - soft (cause)
  - terrain condition - wet (cause)

## Analysis

THE PLT REPORTED THAT WHILE LANDING ON A RIVER THE ACFT SKIDDED ON RIVER SILT. HE STATED HE COULD NOT STOP THE ACFT WHICH TRAVELED TO THE FAR END OF THE RIVER INTO 8 INCH DEEP WATER WHERE IT NOSED OVER.

## Aircraft

- Registration: [N6191D](https://openairdocs.org/aircraft/N6191D), registered now, S/N 18-5485, built 1957 (OpenAirDocs)
- Reported make and model: PIPER PA-18-150
- Registry model: [Piper PA-18A](https://openairdocs.org/model/piper-pa-18a) (registry code 7101804) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 18-5485
- Airframe hours: 334
- Engines: LYCOMING O-320-A2A 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Darryl P. Olson
- Airworthiness certificate: Standard, Normal
- Departed: PSG, PETERSBURG, AK
- Destination: PETERSBURG, AK
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 44; private; airplane ratings: single-engine land, single-engine sea; medical: class 3, valid medical--no waivers/lim.; seat: front; flight hours: 363 total, 284 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 220° at 10 knots
- Visibility: 15 statute miles
- Lowest ceiling: 1,200 ft overcast
- Temperature: 48 °F
- Observed at: PST, 15 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 19861008062079A](https://openairdocs.org/incident/19861008062079A), Oct 8, 1986: Piper PA18A, Petersburg, AK, Substantial damage. The float equipped plane flipped over on landing. The pilot was attempting to land on a river but struck mud flats.

## Other investigations on N6191D (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 SEA69D0185](https://openairdocs.org/ntsb/SEA69D0185), Feb 9, 1969: Piper PA-18A (N6191D), Othello, WA, 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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