# NTSB ANC85FA086: Piper PA-18-150, N7786D, Anchorage, AK, May 24, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: May 23, 1985, 17:38 local (May 24, 1985, 01:38 UTC)
- Place: Anchorage, AK
- Coordinates: 61.220455, -149.849487 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.2205&lon=-149.8495&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): 4407
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC85FA086
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4407/pdf
- Page: https://openairdocs.org/ntsb/ANC85FA086

## 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 (cause)
  - ground loop/swerve - uncontrolled, pilot in command (cause)

## Analysis

ACFT LOST CONTROL DURING LANDING & GROUNDLOOPED. THE PLT STATED THE HEEL OF HIS SHOE SLIPPED OFF THE BRAKE PEDAL WHEN AN ATTEMPT TO APPLY THE BRAKES WAS MADE.

## Aircraft

- Registration: [N7786D](https://openairdocs.org/aircraft/N7786D), registered now, S/N 18-5984, built 1957 (OpenAirDocs)
- Reported make and model: PIPER PA-18-150
- Registry model: [Piper PA-18A 150](https://openairdocs.org/model/piper-pa-18a-150) (registry code 7101837) (OpenAirDocs)
- Registry engine: [Lycoming O-320-A2B](https://openairdocs.org/engine/lycoming-o-320-a2b) (registry code 42101, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 18-5984
- Airframe hours: 2300
- Engines: LYCOMING O-320-A2A 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Charles E. Green
- Airworthiness certificate: Standard, Normal; Standard, Utility
- Last inspection: Annual, May 1, 1985, 14 hours before
- Departed: SWD, SEWARD, AK
- Destination: MRI, ANCHORAGE, AK
- Airport: MRI, Merrill Field, runway 33, 2,469 × 60 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 38; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: front; flight hours: 640 total, 200 in this make and model, 589 as pilot in command, 36 in the last 90 days, 32 in the last 30 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 240° at 4 knots
- Visibility: 50 statute miles
- Lowest ceiling: 20,000 ft overcast
- Temperature: 64 °F, dew point 37 °F
- Altimeter: 29.00 inHg
- Observed at: MRI, 1 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 19850523023259A](https://openairdocs.org/incident/19850523023259A), May 23, 1985: Piper PA18A150, Anchorage, AK, Substantial damage. Aircraft ground looped when pilots foot slipped off the brake during rollout. Fuselage twisted and propeller bent.

## Other investigations on N7786D (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 ANC95LA154](https://openairdocs.org/ntsb/ANC95LA154), Aug 29, 1995: Piper PA-18 (N7786D), Sleetmute, AK, substantial damage. Probable cause: THE PILOT'S ADEQUATE COMPENSATE FOR WIND CONDITIONS AND FAILURE TO MAINTAIN DIRECTIONAL CONTROL OF THE AIRPLANE. THE CROSSWIND WAS A RELATED FACTOR.

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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