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Atlas/ TSOA/ TSO-C77a

FAA · TSO Authorization

TSO-C77a

Gas Turbine Auxiliary Power Units

Current Issued 10/15/2015 PDF ↗

What is a TSOA?

A Technical Standard Order Authorization is the FAA's permit for a manufacturer to produce equipment that meets a specific TSO standard (avionics, seats, parachutes, GPS receivers, etc.). The TSO sets the performance requirement; the TSOA is the holder's authorization to deliver compliant parts.

Authorized parts (5)

  • Auxiliary Power Unit

    36-150(F), P/N 3800188-3

  • Gas Turbine Auxiliary Power Unit

    Model 131-9(C), P/N 70720725-1

  • Electronic Control Unit with Software Version C Series � 04.00

    Model 131-9(C), P/N 70720604-1

  • Auxiliary Power Unit, Equipped with Electronic Control Unit (ECU)

    Model 36-150(CL), P/N 3800804-1

  • Auxiliary Power Unit, Equipped with Electronic Control Unit (ECU)

    Model 36-150(CL), P/N 3800804-2