# N9550: 2024 Pfannenstiel Nicholai W KAYS SPEEDSTER

- Status: Valid registration
- Airframe: [Pfannenstiel Nicholai W KAYS SPEEDSTER](https://openairdocs.org/model/pfannenstiel-nicholai-w-kays-speedster) (registry code 05641QY, 2 seats)
- Engine: [Verner SCARLETT-9S](https://openairdocs.org/engine/verner-scarlett-9s) (registry code 63707)
- Serial number: 2000-24
- Year built: 2024
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: June 19, 2024
- Certificate issued: May 4, 2023
- Expires: May 31, 2030
- Mode S code: AD4992
- Registered owner: [Pfannenstiel Nicholai W](https://openairdocs.org/faa-owner/PFANNENSTIEL%20NICHOLAI%20W)
- Location: [Montrose, CO](https://openairdocs.org/faa-place/CO/Montrose)
- Owner type: Individual
- Owner's area on the map: 38.3146° N, 107.9284° W: Placed by OpenAirDocs at the center of ZIP code 81403, within about 13 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=9550
- Page: https://openairdocs.org/aircraft/N9550

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): 0 in force

### Matched by airframe (Pfannenstiel Nicholai W KAYS SPEEDSTER)

None in force.

### Matched by engine (Verner SCARLETT-9S)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N9550.

## FAA accident and incident reports

None matched to N9550.

## 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)

None matched to this aircraft's models.

## Earlier aircraft with N9550

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N9550 before.

- [Cancelled 2000-04-13](https://openairdocs.org/deregistered/N9550-2000-04-13): Bosick Michael C PULSAR, S/N 199. Triennial form not returned. Owner: [Bosick Michael C](https://openairdocs.org/faa-owner/BOSICK%20MICHAEL%20C), [Belleville, IL](https://openairdocs.org/faa-place/IL/Belleville)

## Related

- Other Pfannenstiel Nicholai W KAYS SPEEDSTER aircraft: https://openairdocs.org/model/pfannenstiel-nicholai-w-kays-speedster/aircraft.md
- The Verner SCARLETT-9S engine: https://openairdocs.org/engine/verner-scarlett-9s.md

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