# N40145: 1999 Ayres S2R-T34

- Status: Valid registration
- Airframe: [Ayres S2R-T34](https://openairdocs.org/model/ayres-s2r-t34) (registry code 0970106, 1 seats)
- Engine: [Pratt & Whitney Canada PT6A-45](https://openairdocs.org/engine/pratt-whitney-canada-pt6a-45) (registry code 52105)
- Data sheets: [TCDS E4EA](https://openairdocs.org/tcds/E4EA) (Pratt & Whitney Canada Corp.) (OpenAirDocs)
- Serial number: T34-261
- Year built: 1999
- Type: Fixed wing single engine
- Engine type: Turbo-prop
- Airworthiness: Restricted, agriculture and pest control, other
- Airworthiness date: March 29, 1999
- Certificate issued: June 11, 2025
- Expires: June 30, 2032
- Mode S code: A4B35A
- Registered owner: [Crop Dusters LLC](https://openairdocs.org/faa-owner/CROP%20DUSTERS%20LLC)
- Location: [Maurice, IA](https://openairdocs.org/faa-place/IA/Maurice)
- Owner type: LLC
- Owner's area on the map: 42.9697° N, 96.1895° W: Placed by OpenAirDocs at the center of ZIP code 51036, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=40145
- Page: https://openairdocs.org/aircraft/N40145

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination.

## ADs that may apply (OpenAirDocs): 1 in force

### Matched by airframe (Ayres S2R-T34)

None in force.

### Matched by engine (Pratt & Whitney Canada PT6A-45)

- [AD 97-04-12](https://openairdocs.org/ad/97-04-12): Compressor Bleed-off Valve · Pratt & Whitney Canada PT6A-11, PT6A-110, PT6A-112 and 52 more. Effective Mar 14, 1997

### Historical (superseded or no longer in force)

- [AD 97-17-03](https://openairdocs.org/ad/97-17-03) (historical): Lower Spar Cap Bolt Hole Areas · Ayres 600 S-2D, S-2R, S2R-G1 and 12 more. Effective Sep 5, 1997
- [AD 97-13-11](https://openairdocs.org/ad/97-13-11) (historical): Lower Spar Cap Bolt Hole Areas · Ayres 600-S-2C, S-2R, S2R-G1 and 12 more. Effective Jul 23, 1997

## Information bulletins (advisory) (1 in force)

- [SAIB ACE-98-17](https://openairdocs.org/saib/ACE-98-17): . Issued Dec 16, 1997

## NTSB investigations

None matched to N40145.

## FAA accident and incident reports

None matched to N40145.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs) (5)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the engine (Pratt & Whitney Canada PT6A-45)

- [STC SE2960SO](https://openairdocs.org/stc/SE2960SO): Installation of an oil filler cap safety adapter. Jet Avion Corporation
- [STC SE615GL](https://openairdocs.org/stc/SE615GL): Incorporation of a fuel flow transducer. Shadin Avionics
- [STC SE01805NY](https://openairdocs.org/stc/SE01805NY): Installation of Fuel Nozzle Adapters using studs and nuts. Atlantic Turbines International Inc
- [STC SE09257SC](https://openairdocs.org/stc/SE09257SC): Convert P&W Engine Models PT6A-15AG, -27, and -28, into PT6A-34 configuration. Covington Aircraft Engines, Inc
- [STC SE659NE](https://openairdocs.org/stc/SE659NE): Installation of oil tank filler neck check valve, P/N TSA-76A. Aviation Components Support

## Earlier aircraft with N40145

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N40145 before.

- [Cancelled 1996-03-22](https://openairdocs.org/deregistered/N40145-1996-03-22): Ayres S2R-600, S/N 2558R. Exported to Canada. Owner: [Sunniland Aircraft Sales Inc](https://openairdocs.org/faa-owner/SUNNILAND%20AIRCRAFT%20SALES%20INC), [Dover, DE](https://openairdocs.org/faa-place/DE/Dover)
- [Cancelled 1970-12-08](https://openairdocs.org/deregistered/N40145-1970-12-08): Stinson 108, S/N 108-75. Owner: [Warren Victor M](https://openairdocs.org/faa-owner/WARREN%20VICTOR%20M), [Somis, CA](https://openairdocs.org/faa-place/CA/Somis)

## Related

- Other Ayres S2R-T34 aircraft: https://openairdocs.org/model/ayres-s2r-t34/aircraft.md
- The Pratt & Whitney Canada PT6A-45 engine: https://openairdocs.org/engine/pratt-whitney-canada-pt6a-45.md

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