Active Standard: D909 - 07(2012)e1
The current D909 method defines check fuel (3.1.2) and lists Aviation check fuel in reference materials (8.5) but does not give the user any instructions on how to use the fuel to check engine performance as suggested in 8.5. The proposed method additions are meant to give the user guidance on how to use a rating on the aviation check fuel to document the overall effectiveness of the engine. The proposed additions do not alter the procedure or engine operation in any way.
Draft Under Development