2. AC gen fails when either engine goes below 65% N1, as per the Flight Manual. However if the snow blankets are on, the AC gen will stay on line. Question is: if the blankets are off when the engine fails, can you turn on the remaining engine snow blanket and restore the AC gen? (Haven't tried this yet)
Rep>; I don't understand why the AC generator drops off line when either engine goes below 65% N1. It's been awhile since I've flown an A+ or ++ but on the A model the snow blankets are powered by the DC generators under normal operations and in the event of a Generator failure both snow blankets are powered By the AC Generator through the monitor bus phase A for #1 engine and phase B for the # 2 engine.
3. #2 DC gen will intermittently not come on line until N1 is increased above 65% N1. Doesn't make any difference which engine is started first or if the other generator is switched off to "shock" #2 on. Only increasing the N1 will bring it online. When it is working normally (60% of the time), it comes on line as soon as the starter button is released at 40%N1.
Rep>; Sounds like the generator voltage outputs need to be " parallelled".
4. Aircraft shut down on ramp. Turn on external power.. .When inverter is turned on the pedals move 2" (to the right) quite forcefully. Vertical gyro (ADI) is just jumping around as it gets powered up.. .AFCS is off. Subsequent attempts to duplicate produced less and less pedal movement until after 4 tries produced no pedal movement.
Rep>; This makes absolutely NO SENSE!. . . .This aircraft has a basic Phase 2 AFCS, but a very strange looking pedal damper (no electrical connections, one hydraulic supply line). .Weird ones aye? Thanks in advance!
Rep>; The phase 2 has only 1 supply line , it is connected to the #2 hydraulic systems return line and not pressure line , the return line only provides operational fluid to the pedal damper to restrict pedal movement, it is not affected by operation of the priority valve. The phase 3 has a pedal damper/ yaw trim actuator and therefore electrical connections, it is affected by operation of the priority valve.. . . .Hope this may be of some assistance.
[ 28 February 2002: Message edited by: IHL ]</p>