Hi,
During engine run-up jet at the gate or the terminal, jet engine power is restricted to "idle" ONE engine at a time for a maximum of FIVE minutes.
Is this statement true?
-Certain engines have the gearbox and accessories under the reverse cowls which can't be opened while the engine is running. How the leak check is performed (let's say the leakage in under the reverse cowls area and the leakage is not static)? Is it difficult to localize a leak in this case?
How the leak check is performed If the gearbox and some accessories are installed on the fan case?
-Is it permissible to perform run-up engine while the fan cowls are open (engine at idle and above idle)? is it permissible for AMT to be around engine especially the fan case (with cowls open) above idle?
-Does the red warning stripe on the cowls indicate the hazard area during idle run-up or above idle? Is the red warning stripe located on the fan cowls or the reverse cowls?
-If during engine run-up the mechanic can't see the red warning stripe because the cowls are open (I hope this is true), is the practise of connecting a safety harness at certain points under the cowls standart for all engines?
Are there a painted lines on the engine run-up remote area (on the floor) to show the mechanic the hazard areas (mechanic under open cowls)?
-Some AMTs don't feel comfortable when performing manual start (start valve opened manually), is it because of the fear of starter desintegration if pilots forget (or delay) shutting the engine start system, OR because the start valve is located in the fan case (at the front of fan case for certain engines like CFM-56) so close the engine inlet? (the start valve is closed at 55% N2 in CFM-56 which is pretty high compared to 35 or 38% N2 in JT8D in the B 737- 200 or B 727.
Feedback appreciated. Thank you.
Best regards