ED Decision 2023/001/R
For each required powerplant instrument, as appropriate to the type of instruments –
(a) Each maximum and, if applicable, minimum safe operating limit must be marked with a red line;
(b) Each normal operating range must be depicted as a green or unmarked range;
(c) Each take-off and precautionary range must be marked with a yellow range or yellow line;
(d) Each engine or propeller range that is restricted because of excessive vibration stresses must be marked with red ranges or red lines; and
(e) Each OEI limit or approved operating range must be marked to be clearly differentiated from the markings of sub-paragraphs (a) to (d) except that no marking is normally required for the 30-second OEI limit.
[Amdt No: 29/11]
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