Ahlers Aerospace, Inc. of Hurst Texas has acquired Exectutive Instruments and its subsidiary Executive Technical Services of Addison, Texas.

FAA-PMA Replacement for TOT used on the Bell Model 206L-3 Helicopter

The Ahlers turbine outlet temperature (TOT) indicator AAI206-375-007-103 is FAA-PMA replacement for the TOT used on the Bell Model 206L-3. Benefiting from updated electronics, the instrument uses less power and runs cooler with increased life so that we can offer a three-year factory warranty.

Bell 407 Dual Tach Replacement

Transport Canada STC SN13-30



Ahlers Aerospace Inc. provides:


  • Manufacture of New Aircraft Instruments - Design & Manufacture to Specifications


  • Repair / Overhaul - Certified Repair Station


  • Night Vision Modifications - NVIS White, Green A, Green B, External Modifications, Eyebrow, Post Lights, etc.


  • Environmental Testing - DO-160, MIL-STD-810


  • Machine Shop - CNC Mill & Lathe


On the following pages you will find more information about our company and our services. It would be our pleasure to be able to help you.