Cant get the drift of your question but for ETOPS
the following are required servicable by my outfit.
2 eng-driven gennys
1 APU
1 Emer gen (no-go in any case)
The emer gen is only a last-ditch stay-alive generater in
case of double-genny or double engine failure, and never
assumed to replace say an APU inop at dispatch.
Whats a HMG?
