If CASA requires me to hold the ‘unit of competency’ ‘MEA306’, is it possible for me to be considered theoretically ‘competent’ for MEA306 if I got 75% in my CASA module 15 exam, yet failed to correctly answer any question on ‘ignition systems?

No. Irrespective of the result obtained in any CASA modular exam, the knowledge evidence required for completion of a unit of competency (“MEA”) will not necessarily be satisfied, and in almost all cases, it won’t. Unless all the specific knowledge evidence is satisfactorily assessed, theoretical competency is not demonstrated.

See the FAQ I got less than 75% for a CASA Modular exam, but more than 50%. Does this give me a “Cert IV Pass”?