The727Flyer

Hello Jim, The nominal pressure of the brake accumulator is 750psi at 20ºC - 25ºC. The P1 press gauge in PMDG 747 goes down to 750psi and stays there. I am flying now without hyd sys #1, #2 and #4 at -26ºC and it doesn't goes below 750psi (should be around 650psi at that temperature). Have a nice day. Miguelito de Lucas.

Hello again, I got the parking brake released message (bottom left red message in Prepar3D). It went from aproximately 3100psi to 750-ish psi in 42 minutes with parking brake on and no hydraulic pressure. Then it remains there without decreasing for the remaining 18 minutes before departure. Regards. Miguelito de Lucas.

Hi Robert and company, I am back at my computer and I will do a test flight now. According to the aircraft maintenance manual, the inspection/check task of the hydraulic brake accumulator states that the pressure indication on the P1 panel gauge should not decrease without hydraulic pressure althought it doesn´t says in which time range. My experience is with A320 family where the accumulator holds the pressure almost forever (plane arrives in the morning and the accumulator shows pressure on the top of the green at night) and although it is not the same plane, I think it is a bit extreme that the accumulator pressure is lost in less than an hour. It was working ok when it was released one year and a half ago, even when it was broken by one update and was reading 300psi instead of 3000 psi it was holding pressure. I will report back in around three hours. Have a nice day guys. Miguelito de Lucas.

Hello guys, I have been enjoying the B747-400 a lot. It is a masterpiece. However, I have a problem with the brake accumulator pressure. Since last update the pressure decreases too fast, it does not survive flight preparation. From around 3000psi to almost 0psi in less than an hour. I have parking brake on all the time until there is not enough pressure and it is released. With hydraulics on it recovers full pressure but as soon as there is no hydraulic it starts going down again slowly. I have deleted my custom panel state and built again from your long stop panel state. Best regards. Miguelito de Lucas.

Hello guys, it is the first time I write here but I have been reading PMDG forums for years. Because I am spanish, I have to request Iberia livery. Iberia has flown every series of the Jumbo except the SP and the -800 (I know Boeing called it -8, but that hurts me deep in my heart so I make that a deliverate mistake) and I think this new B747 deserves an Iberia livery that is not the horrendous new eurowhite livery. Have a nice flight. Miguelito de Lucas.