Looks like there is no way to restart tested engine after EEG/PT-1/PT-2 channels test procedures.
Manual/page 159: The “СТ-1” (PT-1) and “СТ-2” (PT-2) channels operate independently from each other. To generate an engine shut down signal it is necessary that both channels have detected a PT over-speed with a time difference of no more than 0.2 seconds. In case of a PT RPM over-limit detection by only one channel, or by both of them but with a time gap of more than 0.2 seconds, the signal is ignored as a false alarm and no action is taken.
If during test mode with an illuminated warning light and a rotor RPM of 86.5%, the selector can be rapidly switched to the other channel (СТ-1 – СТ-2) without holding it in the middle “РАБОТА” (OPERATION) position; the tested engine will shut down.
After doing this ,i was unable to restart again tested engine, even with false start and crank procedure ?! Is it really true that power turbine channels test procedure can damage engine and brake spooling ability or am i doing something wrong?Bug maybe?
Also, can someone ,please ,reproduce for me situation where false start and crank procedure are actually useful ? TNX EEG-PT.trk