# NTSB ANC83LA062: Piper PA-18-150, N4127Z, Anchorage, AK, April 1, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 31, 1983, 16:53 local (Apr 1, 1983, 00:53 UTC)
- Place: Anchorage, AK
- Coordinates: 61.219417, -149.85025 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.2194&lon=-149.8502&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4109
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC83LA062
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4109/pdf
- Page: https://openairdocs.org/ntsb/ANC83LA062

## 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
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - inadvertent, pilot in command (contributing factor)
- Nose down, landing - roll
  - terrain condition - soft (contributing factor)

## Analysis

THE ACFT GROUND LOOPED DURING A FULL STOP LANDING. THE PILOT HAD COMPLETED SEVERAL TOUCH AND GO LANDINGS IN THIS CONVENTIONAL GEAR ACFT. THE TOUCHDOWN OF THIS LAST LANDING WAS NORMAL BUT DURING ROLLOUT THE ACFT VEERED TO THE LEFT. THE PILOT STATED THAT HE RESPONDED WITH OPPOSITE RUDDER, BRAKE AND ADDED A LITTLE POWER BUT THE ACFT LEFT THE RWY AND NOSED DOWN IN THE MUSKEG ALONGSIDE THE RWY.

## Aircraft

- Registration: [N4127Z](https://openairdocs.org/aircraft/N4127Z), registered now, S/N 18-8196, built 1964 (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: 18-8196
- Airframe hours: 2525
- Engines: LYCOMING O-320-A2B 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Clifford A. Pulis
- Registered owner: Clifford Larue Pulis
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, August 3, 1982, 35 hours before
- Airport: Z41, Lake Hood, runway 31, 2,200 × 75 ft, ice

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 31; private; airplane ratings: single-engine sea, single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: front; flight hours: 520 total, 475 in this make and model, 496 as pilot in command, 30 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 360° at 5 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 81 °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 19830331011359A](https://openairdocs.org/incident/19830331011359A), Mar 31, 1983: Piper PA18150, Anchorage, AK, Substantial damage. Pilot lost directional control during landing and aircraft went off runway and nosed over.

## Other investigations on N4127Z (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 ANC12CA101](https://openairdocs.org/ntsb/ANC12CA101), Sep 5, 2012: Piper PA-18-150 (N4127Z), Ekwok, AK, substantial damage. Probable cause: The pilot's diverted attention during the initial climb, which resulted in a collision with trees.

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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