# N37603: Hughes HK-1

- Status: Valid registration
- Airframe: [Hughes HK-1](https://openairdocs.org/model/hughes-hk-1) (registry code 4470302, 18 seats)
- Serial number: HK1
- Type: Fixed wing multi engine
- Engine type: Reciprocating
- Certificate issued: May 12, 2016
- Expires: May 31, 2029
- Mode S code: A44C89
- Registered owner: [Evergreen Aviation & Space Museum](https://openairdocs.org/faa-owner/EVERGREEN%20AVIATION%20%26%20SPACE%20MUSEUM)
- Location: [Mcminnville, OR](https://openairdocs.org/faa-place/OR/Mcminnville)
- Owner type: Corporation
- Owner's area on the map: 45.2117° N, 123.2817° W: Placed by OpenAirDocs at the center of ZIP code 97128, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=37603
- Page: https://openairdocs.org/aircraft/N37603

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 (Hughes HK-1)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N37603.

## FAA accident and incident reports

None matched to N37603.

## 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 N37603

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N37603 before.

- [Cancelled 1989-04-18](https://openairdocs.org/deregistered/N37603-1989-04-18): Schweizer TG3A, S/N 67. Triennial form not returned

## Related

- Other Hughes HK-1 aircraft: https://openairdocs.org/model/hughes-hk-1/aircraft.md

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