Damned if you do damned if you don't
Depends on the outcome...
It should be noted that, in determining the safest course of action, troubleshooting, i.e. taking steps beyond published non-normal checklist steps, may cause further loss of system function or system failure. Troubleshooting should only be considered when completion of the published non-normal checklist results in an unacceptable situation.
I don't necessarily disagree, although this is clearly a legal boilerplate. Please define "an unacceptable situation"... a deliberately vague term.
HF3000
I think that is pretty clear.
Their QRH clearly told them they did not have a problem.
All good except that they DID have a problem, as it turns out...
Further troubleshooting in this situation would have been clearly outside the guidelines of the manufacturer and the operator.
Does the DHC QRH and/or the Air Nelson Ops Manual specifically prohibit any further consideration of a problem? Not talking about "guidelines" as they wouldn't be limiting in any case.
Cheers
AeroCat