# N404TK: Blackburn Kenneth ULTRA PUP L-4

- Status: Valid registration
- Airframe: [Blackburn Kenneth ULTRA PUP L-4](https://openairdocs.org/model/blackburn-kenneth-ultra-pup-l-4) (registry code 05629ML, 2 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 9885
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: September 7, 2010
- Certificate issued: March 8, 2010
- Expires: February 28, 2030
- Mode S code: A4BD30
- Registered owner: [Blackburn Kenneth](https://openairdocs.org/faa-owner/BLACKBURN%20KENNETH)
- Location: [Citra, FL](https://openairdocs.org/faa-place/FL/Citra)
- Owner type: Individual
- Owner's area on the map: 29.4100° N, 82.0892° W: Placed by OpenAirDocs at the center of ZIP code 32113, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=404TK
- Page: https://openairdocs.org/aircraft/N404TK

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 (Blackburn Kenneth ULTRA PUP L-4)

None in force.

### Matched by engine (Amateur-built UNKNOWN ENG)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N404TK.

## FAA accident and incident reports

None matched to N404TK.

## 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 Blackburn Kenneth ULTRA PUP L-4 aircraft: https://openairdocs.org/model/blackburn-kenneth-ultra-pup-l-4/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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