# Search: Howell Instruments Inc

In the text of STC certificates: 10 matches in release 2026-11-06. Page 1.

- [STC SR01163NY](https://openairdocs.org/stc/SR01163NY.md): Installation of Howell H2949-501 Engine Indicator/Monitor · Howell Instruments, Inc. · Certificate · Sep 12, 2012
  > …**Howell** **Instruments**, **Inc**. 8945 South Freeway Fort Worth, Texas 76140 H9EU Make : Aerospatiale Model : AS350B, 350B1, 350B2, 350BA…
- [STC SA4429SW](https://openairdocs.org/stc/SA4429SW.md): Installation of Howell autotak RPM indicator. · Howell Instruments Inc · Certificate · Feb 9, 2004
  > …SA76000SC-T SHC Number SA44295W This Certificate issued to **Howell** **Instruments**, **Inc**. 3479 W. Vickery Blvd Fort Worth…
- [STC SA4624SW](https://openairdocs.org/stc/SA4624SW.md): Replace existing N1, N2 and ITT indicators with Howell autotak and autotemp indicators. · Howell Instruments Inc · Certificate · Jan 5, 2005
  > …SA7916SC-T SHC Number SA4624SW This Certificate issued to **Howell** **Instruments**, **Inc**. 3479 W. Vickery Blvd. Fort Worth…
- [STC SA2377SW](https://openairdocs.org/stc/SA2377SW.md): Install BH185R-289 EGT temperature indicator system. · Howell Instruments, Inc · Certificate · Nov 9, 1976
  > …S TSP-213 This certificate, issued to **Howell** **Instruments**, **Inc**. 3479 W. Vickery Blvd. Fort Worth, Texas 76107…
- [STC SA4697SW](https://openairdocs.org/stc/SA4697SW.md): Installation of Howell autotemp and autotak indicators. · Howell Instruments, Inc · Certificate · Jun 14, 1982
  > …DS PL- 190 This certificate, issued le **Howell** **Instruments**, **Inc**. 3479 W. Vickery Biva. Fort Worth, Texas 76107…
- [STC SA5518SW](https://openairdocs.org/stc/SA5518SW.md): Replacement of existing engine indicators (ITT, percent fan RPM, percent turbine RPM, fuel flow, fuel quantity, oil pressure) with Howell Instruments indicators. · Air Carrier Electronics · Certificate · Feb 25, 1987
  > …Fuel Flow, Fuel Quantity, Oil Pressure) with **Howell** **Instruments**, **Inc**. indicators in accordance with Drawing List 830100 dated…
- [STC SA5769SW](https://openairdocs.org/stc/SA5769SW.md): Replacement of existing engine indicators (ITT. c/o FAN RPM, c/o TURBINE RPM, FUEL FLOW, FUEL QUANTITY, OIL TEMP & OIL PRESS) with Howell Instruments indicators. · Air Carrier Electronics Inc · Certificate · Feb 25, 1987
  > …Quantity, Oil Temperature, and Oil Pressure) with **Howell** **instruments**, **inc**. indicators in accordance with Drawing List 830100 dated…
- [STC SA01946LA](https://openairdocs.org/stc/SA01946LA.md): Installation of Blackhawk Ultra Electronics Engine Instrument. · Blackhawk Modifications Inc. · Certificate · Mar 2, 2015
  > …Installation of **Howell** **Instruments** powerplant indicating system in accordance with FAA Approved Model List No. SA01946LA, dated October…
- [STC SA02546LA](https://openairdocs.org/stc/SA02546LA.md): Replacement of the original Pratt and Whitney PT6A-114(A) engine and propeller with a Pratt and Whitney PT6A-140 and 3-blade Hartzell Propeller  HC-B3TN-3AF(Y)/T10890CN(K)-2, also Ametek MG94K-2 325 AMP Starter Generator, Howell Instruments powerplant indicating system, and associated equipment · Blackhawk Modifications Inc. · Certificate · Oct 15, 2015
  > …also Ametek MG94K -2 325 AMP Starter Generator, **Howell** **Instruments** powerplant indicating system , and associated equipment in accordance…
- [STC SA02357LA](https://openairdocs.org/stc/SA02357LA.md): Replacement of the original Pratt and Whitney PT6A-114(A) engine and propeller with a Pratt and Whitney PT6A-42A and 4-blade Hartzell Propeller HC-E4N-3P/D9900(K) propeller or 3-blade Hartzell Propeller HC-B3TN-3AE(Y)/T10290N(K)+2, and associated equipment · Blackhawk Modifications Inc. · Certificate · Jan 28, 2015
  > …Installation of optional **Howell** **Instruments**, **Inc**. gages as acceptable alternates for the existing Ultra Electronic FlightLine Systems gages…

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