Facing below mentioned sangs

On OUR GULFSTREAM G(IV) Facing below mentioned snags.


1.Pressurization IS INOP IN AUTO MODE

(WORKING FINE IN MANUAL MODE)

2.FLAP Disagree EICAS MSG During Auto throttle use

( Flap Working fine in Ground) 
3. L-R AC POWER FAIL message on EICAS

Have you ever faced this issue

Sir please guide us for troubleshooting

I don't have any reference material for either issue. Can you send me a schematic or wiring diagram for each system. A training manual would be helpful also.

attached training manual documents 

I have saved both PDF's.

Because of copyright infringement, I cannot have complete manufacturer data displayed on the site.

They can be sent to other users upon request.

I will look at both to see if I can be of any help to you.

Let's look at the pressurization problem....

Manual mode is 28VDC powered and operated completely by the overhead control panel. It uses a DC motor on the outflow valve.
This "is not" a preferred mode of operation as it takes considerable effort to maintain proper pressurization through all phases of flight.

In Auto mode, the system is controlled by the Pressurization Transducer. It is a AC system. Inputs are (either) ADC, Air/Ground, and the Landing/Cabin Alt Selection Panel (on right side panel). The outflow valve motor is AC powered.

What exactly is the crew saying as far as the fault goes?

Has power been checked? Any fault lights on transducer? Has the alternate Air Data been tried? Is the outflow valve reacting when simulating air mode? So many more questions.....