# N6399X: 2000 Biggerstaff Paul E BIGGERSTAFF 16X

- Status: Valid registration
- Airframe: [Biggerstaff Paul E BIGGERSTAFF 16X](https://openairdocs.org/model/biggerstaff-paul-e-biggerstaff-16x) (registry code 05607ML, 2 seats)
- Engine: [Subaru ALL MDLS A/B](https://openairdocs.org/engine/subaru-all-mdls-a-b) (registry code 59050)
- Serial number: H2-967-237
- Year built: 2000
- Type: Rotorcraft
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: February 20, 2000
- Certificate issued: March 31, 2000
- Expires: April 30, 2030
- Mode S code: A862D4
- Registered owner: [Biggerstaff Paul E](https://openairdocs.org/faa-owner/BIGGERSTAFF%20PAUL%20E)
- Location: [Woosung, IL](https://openairdocs.org/faa-place/IL/Woosung)
- Owner type: Individual
- Owner's area on the map: 41.9082° N, 89.5524° W: Placed by OpenAirDocs at the center of ZIP code 61091, 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=6399X
- Page: https://openairdocs.org/aircraft/N6399X

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 (Biggerstaff Paul E BIGGERSTAFF 16X)

None in force.

### Matched by engine (Subaru ALL MDLS A/B)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N6399X.

## FAA accident and incident reports

None matched to N6399X.

## Reports on N6399X not matched to an aircraft (4)

They name N6399X, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [Incident 19890117006449I](https://openairdocs.org/incident/19890117006449I), Jan 17, 1989: Beech C99 (N6399X), Waterloo, IA. Unable to get right gear safe light. Landed without incident. Ground wire and micro switch cleaned.
- [Incident 19881223056129I](https://openairdocs.org/incident/19881223056129I), Dec 23, 1988: Beech C99 (N6399X), Waterloo, IA, Minor damage. Pre flight inspection showed outer left gear wheel missing. Probably departed after leaving o hare. Cause unknown.
- [Incident 19880208013399I](https://openairdocs.org/incident/19880208013399I), Feb 8, 1988: Beech C99 (N6399X), Minneapolis, MN, Minor damage. All four wheels froze en route. Left tires blew out on landing. Right tires were flat spotted.
- [Incident 19850217008829I](https://openairdocs.org/incident/19850217008829I), Feb 17, 1985: Beech C99 (N6399X), Aniak, AK. During climb observed door ajar light. Door came open as pilot approached. Closed door in flight. No malfunction.

## 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.

## Related

- Other Biggerstaff Paul E BIGGERSTAFF 16X aircraft: https://openairdocs.org/model/biggerstaff-paul-e-biggerstaff-16x/aircraft.md
- The Subaru ALL MDLS A/B engine: https://openairdocs.org/engine/subaru-all-mdls-a-b.md

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.