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Hello Phenom Community - We received the recent Service Letter about lubricating the hydraulic reservoir after 3-days of the aircraft sitting unused. Putting aside our angst at essentially having to do this before each trip, we have a couple of questions about the SL itself:

1. Applicability: the SL states that it applies to the "EMB-500 (100E and 100EV)" ... does this mean that the SL does NOT apply to pre-"E" Phenom 100s?

2. Procedure: the SL states that engines must be running in order to perform the procedure. However, could we use a GPU as an alternative? I assume that the SL requires engines to be running in order to provide electrical power to the hydraulic system, but I believe that a GPU would also provide electricity to the hydraulic system, correct?

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Existing discussion here https://www.phenompilots.org/threads...Service-Letter