# N89AS: 1976 Pilatus B4-PC11

- Status: Valid registration
- Airframe: [Pilatus B4-PC11](https://openairdocs.org/model/pilatus-b4-pc11) (registry code 7090104, 3 seats)
- Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000)
- Data sheets: [TCDS G25EU](https://openairdocs.org/tcds/G25EU) (Pilatus Aircraft Limited) (OpenAirDocs)
- Serial number: 248
- Year built: 1976
- Type: Glider
- Engine type: None
- Airworthiness: Standard, normal, glider
- Airworthiness date: March 18, 1977
- Certificate issued: January 24, 2013
- Expires: January 31, 2029
- Mode S code: AC430C
- Registered owner: [Swanson Thomas G](https://openairdocs.org/faa-owner/SWANSON%20THOMAS%20G)
- Location: [Seaford, VA](https://openairdocs.org/faa-place/VA/Seaford)
- Owner type: Individual
- Owner's area on the map: 37.1877° N, 76.4137° W: Placed by OpenAirDocs at the center of ZIP code 23696, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=89AS
- Page: https://openairdocs.org/aircraft/N89AS

From the FAA registry file of October 21, 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): 4 in force

### Matched by airframe (Pilatus B4-PC11)

- [AD 2005-08-07](https://openairdocs.org/ad/2005-08-07): Control-column support · Pilatus B4-PC11, B4-PC11A and B4-PC11AF. Effective Jun 2, 2005
- [AD 75-17-08](https://openairdocs.org/ad/75-17-08): Canopy Jettisoning Capability · Pilatus B4-PC11. Effective Aug 18, 1975
- [AD 75-16-11](https://openairdocs.org/ad/75-16-11): Rudder Control Cables · Pilatus B4-PC11. Effective Jul 29, 1975
- [AD 75-16-05](https://openairdocs.org/ad/75-16-05): Aileron Control Bolts · Pilatus B4-PC11. Effective Jul 28, 1975

### Matched by engine (NONE)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N89AS.

## FAA accident and incident reports

None matched to N89AS.

## Service difficulty reports

None filed for this aircraft.

## Related

- Other Pilatus B4-PC11 aircraft: https://openairdocs.org/model/pilatus-b4-pc11/aircraft.md
- STCs for the Pilatus B4-PC11: https://openairdocs.org/model/pilatus-b4-pc11/stcs.md
- The NONE engine: https://openairdocs.org/engine/none.md

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