# NTSB ANC87LA004: Piper PA-18-150, N1123, King Salmon, AK, October 18, 1986

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: October 17, 1986, 16:30 local (Oct 18, 1986, 00:30 UTC)
- Place: King Salmon, AK
- Coordinates: 58.749202, -156.539398 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=58.7492&lon=-156.5394&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 1 uninjured
- Status: Completed, report March 10, 1988
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4800
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC87LA004
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4800/pdf
- Page: https://openairdocs.org/ntsb/ANC87LA004

## Sequence of events

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

- Vortex turbulence encountered, takeoff - initial climb
  - procedures/directives - not followed, pilot in command (cause)
- Dragged wing,rotor,pod,float or tail/skid, other
  - remedial action - attempted, pilot in command (cause)

## Analysis

THE PILOT WAS CLEARED TO TAXI HIS AIRPLANE INTO POSITION AND TO HOLD BEHIND A CHEROKEE SIX AIRPLANE. AFTER THE CHEROKEE SIX DEPARTED, HE WAS CLEARED FOR TAKEOFF. IMMEDIATELY AFTER LIFT OFF AT 10 TO 15 FEET ABOVE THE RUNWAY, THE PILOT STATED THE AIRPLANE WENT INTO AN UNCONTROLLABLE RIGHT ROLL ABOUT THE LONGITUDINAL AXIS. THE RIGHT WING CONTACTED THE RUNWAY AND THE AIRPLANE CARTWHEELED.

## Aircraft

- Registration: [N1123](https://openairdocs.org/deregistered/N1123-2012-05-24), registration cancelled 2012-05-24, S/N 18-4034, built 1954 (OpenAirDocs)
- Reported make and model: PIPER PA-18-150
- Registry model: [Piper PA-18-135](https://openairdocs.org/model/piper-pa-18-135) (registry code 7101820) (OpenAirDocs)
- Registry engine: [Lycoming 0-290 series](https://openairdocs.org/engine/lycoming-0-290-series) (registry code 41506, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Serial number: 18-4034
- Airframe hours: 3360
- Engines: LYCOMING O-320-A2A 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Sean P. Barron
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, July 18, 1986
- Departed: AKN, KING SALMON, AK
- Destination: 5NK, NAKNEK, AK
- Airport: AKN, King Salmon, runway 11, 8,500 × 150 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; private; airplane ratings: single-engine land, single-engine sea; instrument ratings: airplane; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 1,421 total, 188 in this make and model, 1,225 as pilot in command, 28 in the last 90 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 20° at 9 knots
- Visibility: 4 statute miles
- Lowest ceiling: 2,000 ft broken
- Temperature: 36 °F, dew point 34 °F
- Altimeter: 29.00 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 19861017049259A](https://openairdocs.org/incident/19861017049259A), Oct 17, 1986: Piper PA18135, King Salmon, AK, Substantial damage. The aircraft rolled uncontrollably on takeoff and cartwheeled. Pilot and ATC misjudged spacing behind other traffic

## Other investigations on N1123 (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 ANC10FA038](https://openairdocs.org/ntsb/ANC10FA038), May 14, 2010: Piper PA-18-135 (N1123), Willow, AK, substantial damage, 1 fatal. Probable cause: The pilot's failure to maintain clearance from a tree due to the effects of impairment from alcohol consumption.

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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