# NTSB SEA86FA145: Grumman AA-5A, N9761U, Round Mountain, NV, June 11, 1986

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: June 10, 1986, 18:00 local (Jun 11, 1986, 01:00 UTC)
- Place: Round Mountain, NV
- Coordinates: 38.790863, -117.110084 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.7909&lon=-117.1101&mi=10
- Phase of flight: [Unknown](https://openairdocs.org/ntsb-phases/990) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 40287
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA86FA145
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40287/pdf
- Page: https://openairdocs.org/ntsb/SEA86FA145

## Sequence of events

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

- Loss of control - in flight, unknown
  - weather condition - high density altitude (contributing factor)
  - stall, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled
  - terrain condition - mountainous/hilly (contributing factor)
  - clearance - inadequate, pilot in command (contributing factor)

## Analysis

THE PILOT AND PASSENGER DEPARTED ON A LOCAL FLIGHT TO SPOT POTENTIAL FISHING LOCATIONS IN MOUNTAINOUS TERRAIN. HIGH DENSITY ALTITUDE CONDITIONS EXISTED AT THE TIME/PLACE OF THE ACCIDENT. KINEMATICS INFORMATION FROM THE ACCIDENT SITE INDICATES THAT AS THE AIRCRAFT WAS PROGRESSING TOWARD UPSLOPING TERRAIN AND A STALL CONDITION WAS ENCOUNTERED. THERE WERE NO WITNESSES NOR SURVIVORS TO THE ACCIDENT AND THE WRECKAGE WAS DESTROYED BY POST IMPACT FIRE.

## Aircraft

- Registration: N9761U (not matched to a registry record)
- Reported make and model: GRUMMAN AA-5A
- Category: Airplane
- Serial number: AA5A-0161
- Engines: LYCOMING O-320-E2G 150 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Personal, Part 91
- Registered owner: John B. Ankunding
- Airworthiness certificate: Standard, Normal; Standard, Utility
- Departed: TPH, TONOPAH, NV

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 43; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--no waivers/lim.; seat: left; toxicology performed; flight hours: 1,150 total, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 160° at 6 knots
- Visibility: 100 statute miles
- Lowest ceiling: none
- Temperature: 81 °F, dew point 21 °F
- Altimeter: 30.00 inHg
- Observed at: TPH, 52 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 19860610024159A](https://openairdocs.org/incident/19860610024159A), Jun 10, 1986: Gulstm STCAA5, Round Mountain, NV, Destroyed, 1 fatal. The aircraft collided with terrain after apparently losing control. High density altitude at accident site.

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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