June 19, 201510 yr Author Both packs on AUTO Sorry NO ENGINE BLEED TAKEOFF matt ISOLATION VALVE CLOSED Something to do with the pressure duct ? Vernon Howells
June 19, 201510 yr ###### the N1 difference, what is that on the lower EICAS??? Surprisingly, the forum censors posts but not the emails it sends. Kenny Lee"Keep climbing"
June 19, 201510 yr Well good to know, In UK English, swearing has less effect, it can be used in endearment. You can easily use C U Next Tuesday (work it out) to your friends easily as a term of endearment However, back to topic Chris Smith
June 19, 201510 yr Something is not set right on the pneumatic panel. Probably a pack or bleed switch in the wrong position.
June 20, 201510 yr Without looking into the manuals. I don't know if this is modeled. But it could be something called "N1 Compensation". This being the case, the N1 "limit" is reduced as the engine actually makes the required thrust at a lower N1. (Newer Engine). Cheers,RyanProfessional Coffee Drinker/BAe146 DriverAircraft Maintenance Engineer
June 20, 201510 yr can anyone explain the discrepancy between the 2 N1 enginesUsing the NGX default flight for five different flights both engines have the same N1 in the FMC. Your plane must be setup incorrectly. Find the difference between your panel state and the NGX default panel state and there is your answer. Michael Cubine
June 20, 201510 yr Both packs on AUTO Sorry NO ENGINE BLEED TAKEOFF matt ISOLATION VALVE CLOSED Something to do with the pressure duct ? RW, that would be indicative of one pack on, one pack off. You may have a bug. Let's see a pic of the overhead panel with that N1 indication. Matt Cee
June 20, 201510 yr Author Posted Today, 12:14 AM Something is not set right on the pneumatic panel. Probably a pack or bleed switch in the wrong position. RW, that would be indicative of one pack on, one pack off. You may have a bug. Let's see a pic of the overhead panel with that N1 indication. PACKS AUTO BLEEDS ON APU ON - BLEED SW ON ISOLATION VALVE - CLOSED I will reconfigure the same setup today and post a pict and see if the N1 changes Using the NGX default flight for five different flights both engines have the same N1 in the FMC. Your plane must be setup incorrectly. Find the difference between your panel state and the NGX default panel state and there is your answer. I use my own panel. But i hope not! Never seen this before only when doing a NO ENGINE BLEEDS OFF Vernon Howells
June 20, 201510 yr PACKS AUTOBLEEDS ONAPU ON - BLEED SW ONISOLATION VALVE - CLOSEDI will reconfigure the same setup today and post a pict and see if the N1 changespcubine, on 19 Jun 2015 - 10:53 PM, said:Using the NGX default flight for five different flights both engines have the same N1 in the FMC. Your plane must be setup incorrectly. Find the difference between your panel state and the NGX default panel state and there is your answer.I use my own panel. But i hope not! Never seen this before only when doing a NO ENGINE BLEEDS OFF You have both the engine bleeds and the APU bleed on. The proper config for a bleeds off takeoff is: Right pack - AUTO Isolation valve - CLOSE Left Pack - AUTO Engine 1 bleed - OFF APU bleed - ON Engine 2 bleed - OFF
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