The concept of "equivalent Cat-A" is interesting, since:
- it is an operational term (i.e., found in JAROPS-3 and not the certification rules). Does this imply that its use requires an Ops approval from a National Authority?
- it only provides for engine isolation (as JimL notes), but not guaranteed performance following loss of the critical engine.
- the term is not be found in the FAR's (27, 29, 91, or 135).