Bogi252 Posted August 30, 2021 Share Posted August 30, 2021 These new, all digital TD Amplifiers Mfg by ABB Inc, replace all preceding part numbers on T56A-7, -15 and -16. Does anyone know the TCTO number under which USAF approved the installation of this TD Amp? DnD-ABB TD Amp Iginition Relay Upgrade sheet v1.4b.pdf Quote Link to comment Share on other sites More sharing options...
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