Ecm

ECM
Electronic Counter-Measures.
ECOGAS
European Council of General Aviation Support ...

All functions in a modern engine are controlled by the ECM communicating with an elaborate set of sensors measuring everything from R.P.M. to engine coolant and oil temperatures and even engine position (i.e. T.D.C.).

ECCM - Electronic Counter-Countermeasures - powerful electronics that can 'burn through' conventional ECM systems
ECM - Electronic Countermeasures - electronics designed to decoy or deceive enemy radar or missile threats ...

Consequently, 98 of the RCN Avengers were fitted with an extensive number of novel ASW modifications, including radar, electronic countermeasures (ECM) equipment, and sonobuoys, ...

See also: Aircraft, Flight, Aviation, Radar, Pilot