Skip to content

FAA-listed STC holder

Howell Instruments Inc STCs

The Jun 30, 2026 FAA DRS snapshot lists 3 selected supplemental type certificates with status Current under Howell Instruments Inc. The records span 11 public aircraft directories and 2 modification categories. This is a research directory, not a claim that any specific kit or service is currently offered.

3
listed Current at snapshot
11
aircraft directories
2
modification categories
Sep 12, 2012
latest recorded revision

Modification mix

Other aircraft modifications2
Engine and powerplant1

Aircraft represented

Eurocopter France AS-350B235 STCsEurocopter France AS-350B2234 STCsEurocopter France AS-350B1225 STCsEurocopter France AS-350BA204 STCsBeechcraft HS.125 Series 700A76 STCsRaytheon Aircraft HS.125 Series 700A74 STCsRaytheon Aircraft BH.125 Series 400A33 STCsRaytheon Aircraft DH.125 Series 400A20 STCsRaytheon Aircraft DH.125 Series 3A12 STCsRaytheon Aircraft DH.125 Series 3A/RA10 STCsRaytheon Aircraft DH.125 Series 1A/S-5225 STCs

Recently revised records

Showing the 3 most recently revised records. Category directories provide the complete paginated discovery path.