# NTSB SEA86LA179: Ayres S2R, N5511X, Nampa, ID, July 25, 1986

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Limited investigation · Final report
- Date: July 24, 1986, 20:30 local (Jul 25, 1986, 02:30 UTC)
- Place: Nampa, ID
- Coordinates: 43.599002, -116.609008 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.5990&lon=-116.6090&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 40452
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA86LA179
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40452/pdf
- Page: https://openairdocs.org/ntsb/SEA86LA179

## Sequence of events

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

- Loss of control - in flight, maneuvering - aerial application
  - aircraft handling - not maintained, pilot in command (cause)
  - maneuver - excessive, pilot in command (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

GROUND PERSONNEL REPORTED THE ACFT ENTERED PROCEDURE TURNAROUND IN AN EXCESSIVE ATTITUDE, APPEARED TO STALL, ROLLED INVERTED AND STRUCK THE GROUND. NO EVIDENCE FOUND OF PRE-IMPACT MECHANICAL FAILURE OR MALFUNCTION.

## Aircraft

- Registration: [N5511X](https://openairdocs.org/aircraft/N5511X), registered now, S/N 1711R, built 1973 (OpenAirDocs)
- Reported make and model: Ayres S2R
- Registry model: [Aero Commander S2R](https://openairdocs.org/model/aero-commander-s2r) (registry code 0143022) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1711R
- Airframe hours: 3208
- Engines: GARRETT TPE331-43A 575 horsepower turbo prop
- Damage: Destroyed
- Fire: On-Ground
- Flight: Aerial application, Part 137
- Registered owner: William F. Hubler
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, May 21, 1986

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 27; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; toxicology performed; flight hours: 2,030 total, 200 in this make and model, 2,030 as pilot in command, 300 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 135° at 4 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 84 °F

## 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 19860724034989A](https://openairdocs.org/incident/19860724034989A), Jul 24, 1986: Ayres S2AAYRES, Nampa, ID, Destroyed. Aircraft was on an aerial pollination flight. Pulled up too steeply, rolled inverted and impacted the ground.

## Other investigations on N5511X (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 SEA85LYA01](https://openairdocs.org/ntsb/SEA85LYA01), Aug 4, 1985: Rockwell S2R (N5511X), Caldwell, ID, substantial damage

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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