The Aviation DataBase®
Complete Aviation Regulatory Library
Sept. 11 Sept. 11
DataBases updated: Jan 6th, 2026
Home Products Library Support Account Login Contact

STC Holder: Howell Instruments Inc

The STC search system is a complimentary service provided to the aviation community. We hope you find it useful. Our primary product is a comprehensive library of aviation regulations and standards, including tools for generating Airworthiness Directive compliance reports.

No. of STCs: 11

STC Holder:
Howell Instruments Inc
3479 West Vickery Blvd., Fort Worth, TX 76107, United States
If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2377SWStatus: CurrentApp Date: 02/18/1976Rev Date: 11/09/1976
Description: Install BH185R-289 EGT temperature indicator system.
TC Nos.: A7EU
Models:
Dassault AviationFan Jet Falcon
ACO: AIR-760: Central Certification Branch FTW
STC Holder:
Howell Instruments Inc
3479 West Vickery Blvd., Fort Worth, TX 76107, United States
If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4429SWStatus: CurrentApp Date: 07/07/1981Rev Date: 02/09/2004
Description: Installation of Howell autotak RPM indicator.
TC Nos.: A3EU
Models:
Beechcraft CorporationHS.125 Series 700A
ACO: AIR-760: Central Certification Branch FTW
STC Holder:
Howell Instruments Inc
3479 West Vickery Blvd., Fort Worth, TX 76107, United States
If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4429SWStatus: HistoricalApp Date: Rev Date: 07/24/1981
Description: Installation of Howell autotak RPM indicator.
TC Nos.: A3EU
Models:
Raytheon Aircraft CompanyHS.125 Series 700A
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140
STC Holder:
Howell Instruments Inc
3479 West Vickery Blvd., Fort Worth, TX 76107, United States
If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4522SWStatus: HistoricalApp Date: Rev Date: 10/30/1981
Description: Installation of Howell TGT instruments.
TC Nos.: A12EA
Models:
Gulfstream Aerospace CorporationG-1159
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140
STC Holder:
Howell Instruments Inc
3479 West Vickery Blvd., Fort Worth, TX 76107, United States
If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4522SWStatus: CurrentApp Date: 09/16/1981Rev Date: 01/14/1982
Description: Installation of Howell TGT instruments.
TC Nos.: A12EA
Models:
Gulfstream Aerospace CorporationG-1159
ACO: AIR-760: Central Certification Branch FTW
STC Holder:
Howell Instruments Inc
3479 West Vickery Blvd., Fort Worth, TX 76107, United States
If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4576SWStatus: CurrentApp Date: Rev Date: 01/08/1982
Description: Howell H922-8 oil pressure (digital) and oil temperature indicators.
TC Nos.: A12EA
Models:
Gulfstream Aerospace CorporationG-1159A
ACO: AIR-760: Central Certification Branch FTW
STC Holder:
Howell Instruments Inc
3479 West Vickery Blvd., Fort Worth, TX 76107, United States
If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4624SWStatus: HistoricalApp Date: Rev Date: 03/11/1982
Description: Replace existing N1, N2 and ITT indicators with Howell autotak and autotemp indicators.
TC Nos.: A3EU
Models:
Raytheon Aircraft CompanyBH.125 Series 400A, DH.125 Series 1A/S-522, DH.125 Series 3A, DH.125 Series 3A/RA, HS.125 Series 3B/RA, HS.125 Series 700B
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140
STC Holder:
Howell Instruments Inc
3479 West Vickery Blvd., Fort Worth, TX 76107, United States
If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4624SWStatus: CurrentApp Date: Rev Date: 01/05/2005
Description: Replace existing N1, N2 and ITT indicators with Howell autotak and autotemp indicators.
TC Nos.: A3EU
Models:
Raytheon Aircraft CompanyBH.125 Series 400A, DH.125 Series 1A/S-522, DH.125 Series 3A, DH.125 Series 3A/RA, DH.125 Series 400A, HS.125 Series 700A
ACO: AIR-760: Central Certification Branch FTW
STC Holder:
Howell Instruments Inc
3479 West Vickery Blvd., Fort Worth, TX 76107, United States
If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4697SWStatus: CurrentApp Date: 02/19/1982Rev Date: 06/14/1982
Description: Installation of Howell autotemp and autotak indicators.
TC Nos.: 2A4
Models:
Twin Commander Aircraft LLC690, 690A, 690B
ACO: AIR-760: Central Certification Branch FTW
STC Holder:
Howell Instruments Inc
3479 West Vickery Blvd., Fort Worth, TX 76107, United States
If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00031NYStatus: CurrentApp Date: Rev Date: 04/15/1994
Description: Installation of a Howell engine performance assurance monitoring system.
TC Nos.: H1NE
Models:
Sikorsky Aircraft CorporationS-76B
ACO: AIR-760: Central Certification Branch FTW
STC Holder:
Howell Instruments Inc
3479 West Vickery Blvd., Fort Worth, TX 76107, United States
If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01163NYStatus: HistoricalApp Date: 12/20/1999Rev Date: 11/25/2002
Description: Installation of Howell H2949-501 Engine Indicator/Monitor.
TC Nos.: H9EU
Models:
Eurocopter FranceAS-350B, AS-350B1, AS-350B2, AS-350BA
ACO: New York ACO Branch, Tel: +1 (516) 228-7300