March 16, 20179 yr I just bought this excellent plane and I'm really enjoying it. But I have two questions and I can't seem to find an answer, even when I do an online search for a real manual (which can't be had). 1. What is the Manual Override lever located next to the throttle lever for? 2. Can someone please explain what the crosshatches are for on the bottom left of the instrument panel? If anyone can enlighten me I'd really appreciate it. Thanks a lot. Jack Jack Sawyer
March 16, 20179 yr Re 1: MANUAL OVERRIDE LEVER Description The MANUAL OVERRIDE lever (MOR) is located on the center console to the left of PCL. The MOR controls the engine power in case of a pneumatic failure of the engine fuel control or in case of a PCL system failure. The MOR lever is an emergency device and it is possible to exceed engine limits if the MOR lever is operated too fast. However, even if the engine limits have been momentarily exceeded, the MOR will allow the crew to continue safe flight and landing if the Engine Failure in Flight - Partial Power Loss emergency procedure is followed. The MOR directly operates the fuel metering valve by mechanically compressing the pneumatic bellows (Py pressure) in the FCU. There is a gap between the MOR mechanism and the pneumatic bellows. This gap must first be taken up before the pneumatic bellows start to compress, this results in a dead band when starting to operate the MOR lever. In case of a Py leak, the engine spools down to minimum fuel flow with no response to PCL inputs. Minimum fuel flow is 90 lb/h and results in 35% Ng on the ground to 70% Ng at 30,000 ft. The higher the altitude and the faster the forward speed the longer the engine spool down time to 50% (spool down times of 15 secs are possible). At high altitudes it is possible to achieve full engine power when operating the MOR system. At low altitudes with the MOR lever fully forward the MOR system may not give full engine power (min. 30 psi torque). When the MOR system is in operation the torque limiter and Ng governor are inoperative. Operation During normal engine operation the MOR lever is in the full aft or OFF position. In the case of a possible PCL or pneumatic failure, the PCL should be exercised to check engine response. If not successful the PCL should be set to the idle position and the MOR lever operated slowly forward (at least 4 secs to the mid position) to take up the dead band until the engine responds (fuel flow above 90 lb/h and Ng/ITT stable or increasing), then wait until the engine stabilizes. If the engine stalls and/or ITT reaches 870° C, operate the MOR lever slightly rearward then forward again with an even slower movement. If the engine is allowed to drop below 50% Ng, starter assistance may be required to recover Ng above 50%. Once the engine has stabilized adjust the required power setting with the MOR lever. Observe the engine limitations by making adjustments with the MOR lever. Do not permit the Ng to fall below 65% as ITT may then be exceeded, this will also maintain better engine acceleration. In descent and until touch down adjust Ng to 75% or above. After touch down select cut-off feather to avoid exceeding ITT limits. On the ground with no forward speed it is not possible to recover low Ng with the MOR lever. Bert
March 16, 20179 yr 26 minutes ago, Jack_Sawyer said: 2. Can someone please explain what the crosshatches are for on the bottom left of the instrument panel? They are the Caution and Warning Indicators. Bert
March 16, 20179 yr Author Thanks Bert. But about those crosshatches, can you say what exactly they are for, I mean what triggers them? Jack Sawyer
March 16, 20179 yr I'm sure it is in the Pilot's Guide... http://www.pilatus-aircraft.com/00-def/main/scripts/ckfinder/userfiles/files/CustomerSupport-Publications/PIM_02211_R10.pdf Bert
March 16, 20179 yr http://www.pilatus-aircraft.com/00-def/main/scripts/ckfinder/userfiles/files/CustomerSupport-Publications/PIM_02277_R14.pdf http://www.pilatus-aircraft.com/00-def/main/scripts/ckfinder/userfiles/files/CustomerSupport-Publications/PIM_02211_R10.pdf http://tempusaircraft.com/maintenance-parts/pc-12-pilots/ http://www.avialogs.com/en/aircraft/switzerland/pilatus/pc-12/pilatus-pc12-45-pilots-operating-handbook-and-foca-approved-airplane-flight-manual.html http://training.westwindairservice.com/wp-content/uploads/2014/07/6.-Training-Manual-Appendix-C.-Pilatus-PC-12-NG-Rev-12.pdf Lots of great reading contained on those links. - Mark Manacsa Most of the flight simulation community is pretty toxic and gets easily worked up about little things. Just go into it knowing that.
Archived
This topic is now archived and is closed to further replies.