# NTSB WPR09LA299: Ayres S2R-600, N3089K, Saint Anthony, ID, June 19, 2009

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 19, 2009, 13:15 local (19:15 UTC)
- Place: Saint Anthony, ID
- Coordinates: 44.010276, -111.681945 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=44.0103&lon=-111.6819&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Defining event: [Maneuvering-low-alt flying: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 15, 2009
- Report: Approved by Office Director
- NTSB office: Western Pacific Region
- Parties: Federal Aviation Administration
- NTSB case key (mKey): 74085
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR09LA299
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/74085/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=74085
- Page: https://openairdocs.org/ntsb/WPR09LA299

## Probable cause

A total loss of engine power for undetermined reasons.

## Findings

NTSB's coded findings; those marked are part of the probable cause.

- [Object/animal/substance: fence/fence post](https://openairdocs.org/ntsb-findings/03022047): Environmental issues › Physical environment · Contributed to outcome; cases with it: [Ayres S2R-600, 1 case](https://openairdocs.org/ntsb-findings/03022047/cases.md?model=0970102), [All aircraft, 313 cases](https://openairdocs.org/ntsb-findings/03022047/cases.md)
- [Not determined](https://openairdocs.org/ntsb-findings/05000000): Not determined › Not determined · Unknown/Not determined (probable cause); cases with it: [Ayres S2R-600, 2 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md?model=0970102), [All aircraft, 2,247 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md)

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Maneuvering-low-alt flying: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) (defining event); cases with it: [Ayres S2R-600, 1 case](https://openairdocs.org/ntsb-events/341/sequence.md?model=0970102), [All aircraft, 3,820 cases](https://openairdocs.org/ntsb-events/341/sequence.md)
- [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Ayres S2R-600, 2 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=0970102), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md)
- [Post-impact: Fire/smoke (post-impact)](https://openairdocs.org/ntsb-events/170); cases with it: [Ayres S2R-600, 1 case](https://openairdocs.org/ntsb-events/170/sequence.md?model=0970102), [All aircraft, 354 cases](https://openairdocs.org/ntsb-events/170/sequence.md)

## Analysis

During an aerial application run for the dispersement of agricultural chemicals, the pilot pulled up at the end of the field in order to initiate his reversal turn. Just as he did so, the airplane's engine coughed twice and then lost all power. The pilot was able to make a power-off forced landing in an adjacent field, but during the landing roll the airplane impacted a fence and the steel posts that support it. The engine received significant thermal damage from the postcrash fire and teardown inspections were unable to determine the reason for the loss of power.

## Factual narrative

On June 19, 2009, about 1315 mountain daylight time, an Ayres S2R-600, N3089K, collided with a fence during a forced landing about two miles north of Saint Anthony, Idaho. The commercial pilot, who was the sole occupant, was not injured, but the airplane, which was owned and operated by Shupe Flying Service, was destroyed by a post-crash fire. The 14 Code of Federal Regulations, Part 137 aerial application flight, which departed Saint Anthony Airport about 35 minutes before the accident, was being operated in visual meteorological conditions. No flight plan had been filed. According to the pilot, he was applying chemicals to a field of barley. Just after he pulled up at the end of the field in order to initiate his reversal turn, the engine coughed a couple times and then lost all power. He was able to make a successful touchdown in an adjacent field, but during the landing roll, the airplane impacted a fence and the posts that supported it. Although the pilot was able to get out of the airplane, a fire that initially started out small eventually destroyed most of the airplane's structure. A post-accident inspection of the engine and its accessories was hampered by the extent of the thermal damage that occurred in the post-crash fire, and no determination as to an instigating anomaly or malfunction could be made. As a follow-up measure, the carburetor, which appeared to have sustained limited thermal damage, was shipped to Covington Aircraft of Okmulgee, Oklahoma, for further inspection. The results of that inspection were also inconclusive as disassembly determined that internal thermal damage had resulted from the carburetor's exposure to the heat of the fire.

## Aircraft

- Registration: [N3089K](https://openairdocs.org/deregistered/N3089K-2013-04-25), registration cancelled 2013-04-25, S/N 2571R (OpenAirDocs)
- Reported make and model: AYRES CORPORATION S2R-600
- Registry model: [Ayres S2R-600](https://openairdocs.org/model/ayres-s2r-600) (registry code 0970102) (OpenAirDocs)
- Category: Airplane
- Serial number: 2571R
- Airframe hours: 7000
- Engines: Pratt & Whitney R1340 550 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Aerial application, Part 137
- Operator: Shupe Flying Service
- Registered owner: Shupe Flying Service
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, June 21, 2008
- Departed: U12, Saint Anthony, ID
- Destination: U12, Saint Anthony, ID

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 32; injuries: none; commercial; airplane ratings: single-engine land; medical: class 2, with waivers/limitations; last flight review June 13, 2008; seat: front; flight hours: 650 total, 30 in this make and model, 650 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 5 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 75 °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 20090619010479A](https://openairdocs.org/incident/20090619010479A), Jun 19, 2009: Ayres S2R600, St Anthony, ID, Destroyed. (-23) Prior to last ag run engine popped loudly twice and quit, weather clear, 75 degrees wind from south 5 mph, during emergency landing a/c went through a 3…

## Other investigations on N3089K (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 LAX84FA011](https://openairdocs.org/ntsb/LAX84FA011), Oct 14, 1983: Ayres S2R-600 (N3089K), Westside, CA, substantial damage

## Docket (1 files)

The files NTSB released with the investigation on October 13, 2009, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=74085. 416 KB in all.

- Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 416 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40319464&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF

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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