# N403US: 2017 Aai Corp DBA Textron Systs UNM AEROSONDE MK 4.7G

- Status: Valid registration
- Airframe: [Aai Corp DBA Textron Systs UNM AEROSONDE MK 4.7G](https://openairdocs.org/model/aai-corp-dba-textron-systs-unm-aerosonde-mk-4-7g) (registry code 061009H)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 4003
- Year built: 2017
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, unmanned, research and development, unmanned, market survey, unmanned, crew training
- Airworthiness date: January 30, 2026
- Certificate issued: July 14, 2017
- Expires: July 31, 2027
- Mode S code: A4B999
- Registered owners: [Aai Corp DBA](https://openairdocs.org/faa-owner/AAI%20CORP%20DBA), [Textron Systems Unmanned Systems](https://openairdocs.org/faa-owner/TEXTRON%20SYSTEMS%20UNMANNED%20SYSTEMS)
- Location: [Hunt Valley, MD](https://openairdocs.org/faa-place/MD/Hunt%20Valley)
- Owner type: Corporation
- Owner's area on the map: 39.5114° N, 76.6909° W: Placed by OpenAirDocs at the center of ZIP code 21030, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=403US
- Page: https://openairdocs.org/aircraft/N403US

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 (Aai Corp DBA Textron Systs UNM AEROSONDE MK 4.7G)

None in force.

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

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N403US.

## FAA accident and incident reports

None matched to N403US.

## 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 N403US

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N403US before.

- [Cancelled 1977-11-15](https://openairdocs.org/deregistered/N403US-1977-11-15): Douglas DC-7, S/N 44904. Owner: [Apa Services Inc](https://openairdocs.org/faa-owner/APA%20SERVICES%20INC), [Linden, NJ](https://openairdocs.org/faa-place/NJ/Linden)

## Related

- Other Aai Corp DBA Textron Systs UNM AEROSONDE MK 4.7G aircraft: https://openairdocs.org/model/aai-corp-dba-textron-systs-unm-aerosonde-mk-4-7g/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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