# N321PH: 1995 Kamson GLASAIR III

- Status: Valid registration
- Airframe: [Kamson GLASAIR III](https://openairdocs.org/model/kamson-glasair-iii) (registry code 05628BY, 2 seats)
- Engine: [Rolls-Royce 250-B17F/2](https://openairdocs.org/engine/rolls-royce-250-b17f-2) (registry code 54033)
- Data sheets: [TCDS E10CE](https://openairdocs.org/tcds/E10CE) (Rolls-Royce Corporation) (OpenAirDocs)
- Serial number: 3272
- Year built: 1995
- Type: Fixed wing single engine
- Engine type: Turbo-prop
- Airworthiness: Experimental, amateur built
- Airworthiness date: March 17, 2022
- Certificate issued: September 12, 2025
- Expires: September 30, 2032
- Mode S code: A37354
- Registered owner: [Three Oak Ventures LLC](https://openairdocs.org/faa-owner/THREE%20OAK%20VENTURES%20LLC)
- Location: [Prescott, AZ](https://openairdocs.org/faa-place/AZ/Prescott)
- Owner type: LLC
- Owner's area on the map: 34.4970° N, 112.4321° W: Placed by OpenAirDocs at the center of ZIP code 86303, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=321PH
- Page: https://openairdocs.org/aircraft/N321PH

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): 8 in force

### Matched by airframe (Kamson GLASAIR III)

None in force.

### Matched by engine (Rolls-Royce 250-B17F/2)

- [AD 2006-16-04](https://openairdocs.org/ad/2006-16-04): Inspection of the fuel nozzle screen · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 43 more. Effective Sep 7, 2006
- [AD 2006-13-06](https://openairdocs.org/ad/2006-13-06): Gas producer rotor assembly tie bolts · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 16 more. Effective Jul 26, 2006
- [AD 2001-24-12](https://openairdocs.org/ad/2001-24-12): Helical Torquemeter Gearshaft Assembly · Rolls-Royce 250-B17, 250-B17C, 250-B17D and 13 more. Effective Dec 19, 2001
- [AD 98-24-28](https://openairdocs.org/ad/98-24-28): Main Fuel Control Bellows · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 36 more. Effective Jan 7, 1999
- [AD 96-19-01](https://openairdocs.org/ad/96-19-01): Superior Air Parts Manufacture Approval (PMA) Bearings · Rolls-Royce 250-B15G, 250-B17F, 250-B17F/1 and 17 more. Effective Sep 26, 1996
- [AD 88-17-01](https://openairdocs.org/ad/88-17-01): Fuel Controls · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 26 more. Effective Mar 1, 1989
- [AD 82-24-05](https://openairdocs.org/ad/82-24-05): Control Assembly and Power Turbine Governor Assembly · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 43 more. Effective Nov 26, 1982
- [AD 77-15-12](https://openairdocs.org/ad/77-15-12): Power Turbine Coupling Nut · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 23 more. Effective Sep 23, 1977

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

- [AD 2015-02-22](https://openairdocs.org/ad/2015-02-22) (historical): Repetitive visual inspections · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 15 more. Effective Mar 9, 2015
- [AD 2004-24-09](https://openairdocs.org/ad/2004-24-09) (historical): Fuel nozzle · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 40 more. Effective Jan 5, 2005
- [AD 2001-20-51](https://openairdocs.org/ad/2001-20-51) (historical): Helical Torquemeter Gearshaft Assembly · 250-B17, 250-B17C, 250-B17D and 12 more

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N321PH.

## FAA accident and incident reports

None matched to N321PH.

## 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) (2)

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 (Rolls-Royce 250-B17F/2)

- [STC SE00327AT](https://openairdocs.org/stc/SE00327AT): Installation of PC Safety Valve Kit. Bell Helicopter Textron Inc
- [STC ST00037AT](https://openairdocs.org/stc/ST00037AT): Unison igniter plugs, P/N 9044400-1. Unison Industries

## Earlier aircraft with N321PH

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N321PH before.

- [Cancelled 2018-01-18](https://openairdocs.org/deregistered/N321PH-2018-01-18): Swearingen SA-26AT, S/N T26-140, built 1969. Registration expired, pending cancellation. Owner: [Parran James V](https://openairdocs.org/faa-owner/PARRAN%20JAMES%20V), [Fpo, AP](https://openairdocs.org/faa-place/AP/Fpo)

## Related

- Other Kamson GLASAIR III aircraft: https://openairdocs.org/model/kamson-glasair-iii/aircraft.md
- The Rolls-Royce 250-B17F/2 engine: https://openairdocs.org/engine/rolls-royce-250-b17f-2.md

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