# NTSB SEA92LA119: Mooney M20K, N5772C, Stanley, ID, June 6, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 5, 1992, 22:35 local (Jun 6, 1992, 04:35 UTC)
- Place: Stanley, ID
- Coordinates: 44.260417, -114.970535 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=44.2604&lon=-114.9705&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report March 9, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 42826
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA92LA119
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/42826/pdf
- Page: https://openairdocs.org/ntsb/SEA92LA119

## Probable cause

THE FAILURE OF THE PILOT TO MAINTAIN RUNWAY ALIGNMENT AND HIS LOSS OF DIRECTIONAL CONTROL DURING TAKEOFF GROUND ROLL, RESULTING IN A SWERVE OFF THE 150 FT WIDE RUNWAY AND IMPACT WITH A FENCE.  FACTORS RELATING TO THE ACCIDENT WERE THE LACK OF RUNWAY LIGHTS, THE DARK NIGHT LIGHT CONDITIONS, AND THE FENCE BESIDE THE RUNWAY.

## Sequence of events

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

- Loss of control - on ground/water, takeoff - roll/run
  - light condition - dark night (contributing factor)
  - airport facilities,runway edge lights - unavailable (contributing factor)
  - directional control - not maintained, pilot in command (cause)
  - proper alignment - not maintained, pilot in command (cause)
- On ground/water collision with object, takeoff - roll/run
  - object - fence (contributing factor)

## Analysis

THE ACFT SWERVED OFF THE SIDE OF AN UNLIGHTED AIRSTRIP DURING TAKEOFF GROUND ROLL IN DARK NIGHT LIGHT CONDITIONS AND IMPACTED A FENCE.

## Aircraft

- Registration: [N5772C](https://openairdocs.org/deregistered/N5772C-2001-09-19), registration cancelled 2001-09-19, S/N 25-0841 (OpenAirDocs)
- Reported make and model: MOONEY M20K
- Registry model: [Mooney M20K](https://openairdocs.org/model/mooney-m20k) (registry code 5870220) (OpenAirDocs)
- Category: Airplane
- Serial number: 25-0841
- Airframe hours: 2256
- Engines: CONTINENTAL TSIO-360-MB4 210 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Horsley, George H.
- Registered owner: Horsley, George H.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, September 3, 1991, 158 hours before
- Departed: 2U7, STANLEY, ID
- Destination: SUN, HAILEY, ID
- Airport: 2U7, Stanley, runway 17, 4,300 × 150 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 50; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 4,215 total, 2,256 in this make and model, 4,018 as pilot in command, 98 in the last 90 days, 33 in the last 30 days

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 170° at 5 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 61 °F, dew point 28 °F
- Altimeter: 29.00 inHg
- Observed at: SUN, 50 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 19920605018519A](https://openairdocs.org/incident/19920605018519A), Jun 5, 1992: Mooney M20K, Stanley, ID, Substantial damage. Tried to depart unlighted sod strip at night. Ran off side of runway striking several fence posts.

## Other investigations on N5772C (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 DEN01FA027](https://openairdocs.org/ntsb/DEN01FA027), Dec 15, 2000: Mooney M20K (N5772C), Ogden, UT, destroyed, 1 fatal. Probable cause: the pilot's inadvertent VFR flight into IMC, which resulted in a collision with mountainous terrain. Contributing factors were the blowing snow, turbulence, dark night light conditions, and pilot…

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.