IMO this isn't even an instruments problem. There have been many crashes stemming from pilots diagnosing the wrong engine as the problem and shutting down a working engine.
Where's the NTSB recommendation on creating an official policy on HOW to diagnose an engine? The abnormal checklists only tell you to "shut down the broken engine" but leave it up to you to ad-hoc a way to diagnose the problem in an emergency, which is the wrong time to be inventing something non-trivial. Boeing/Airbus/GE/Rolls royce, whoever should have an official document describing a procedure to test an engine for failure that pilots are expected to refer to unless it would be unsafe
Where's the NTSB recommendation on creating an official policy on HOW to diagnose an engine? The abnormal checklists only tell you to "shut down the broken engine" but leave it up to you to ad-hoc a way to diagnose the problem in an emergency, which is the wrong time to be inventing something non-trivial. Boeing/Airbus/GE/Rolls royce, whoever should have an official document describing a procedure to test an engine for failure that pilots are expected to refer to unless it would be unsafe