# N21HB: 1980 Blackman-Pitts Special S-1C, registration cancelled 2013-02-07

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: February 7, 2013
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Blackman-Pitts Special S-1C](https://openairdocs.org/model/blackman-pitts-special-s-1c) (registry code 72201A9)
- Engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508)
- Data sheets: [TCDS E-274](https://openairdocs.org/tcds/E-274) (OpenAirDocs)
- Serial number: H.W.B.1
- Year built: 1980
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: July 13, 1981
- Certificate issued: September 14, 1987
- Last registry action: February 23, 1991
- Mode S code: A1B7DA
- Owners when cancelled: [Martin James D](https://openairdocs.org/faa-owner/MARTIN%20JAMES%20D), [Martin Nancy C](https://openairdocs.org/faa-owner/MARTIN%20NANCY%20C)
- Location: [Mountain Home, ID](https://openairdocs.org/faa-place/ID/Mountain%20Home)
- Owner type: Co-owned
- Owner's area on the map: 43.4007° N, 115.5229° W: Placed by OpenAirDocs at the center of ZIP code 83647, within about 22 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N21HB
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=21HB
- Page: https://openairdocs.org/deregistered/N21HB-2013-02-07

From the FAA registry file of October 29, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Blackman-Pitts Special S-1C: https://openairdocs.org/model/blackman-pitts-special-s-1c.md

## NTSB investigations (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 SEA81FYM43](https://openairdocs.org/ntsb/SEA81FYM43), Sep 15, 1981: Pitts S-1C (N21HB), Troutdale, OR, substantial damage

## FAA accident and incident reports (2)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Incident 19920414014869I](https://openairdocs.org/incident/19920414014869I), Apr 14, 1992: Amtrpt PITTSSPECS1C (N21HB), Albuquerque, NM, Minor damage. Aircraft veered off runway on takeoff. Ended up in ditch. Right brake became engaged. Caused aircraft to veer.
- [Accident 19810915060009A](https://openairdocs.org/incident/19810915060009A), Sep 15, 1981: Amtrpt PITTSSPECIAL (N21HB), Troutdale, OR, Substantial damage. Pilot lost directional control during takeoff on first flight.

## Other aircraft with N21HB

- [Registered now](https://openairdocs.org/aircraft/N21HB): Cessna 560, S/N 560-0590, built 2001

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