Oxygen

 

 

 

 

 

 

 

 

 

 

Fwd of EID display

 

Main entry door

 

 

RH COAT CLOSET

 

 

 

 

 

 

 

Baggage fwd wall.

 

 

 

 

 

 

 

 

 

 

 

 

One half of 1 meter on climate control panel illuminates. You can press on the left half of the face, and it will come and go.

 

 

 

Scratches at flap handle

 

Lower left overhead panel inop

 

Pressirization computer lower left side light spill

 

#1 RTU upper rh corner light spill.

 

Both audio panels minor light spill all edges

1. 

Light spill at #3 IRU

No illumination on any keys at any of the 3 FMS controll heads

Placard brocken at horn silence

 

 

 

 

 

 

 

 

 

 

 

 

Current troubleshooting: engines running:

1.  Check for Bleed leak blowing on GCU.  BE very carefull if you elect to run the AI on the ground.  !!!!!!APU BLEED OFF!!!!!!, slats extended.    20 seconds ground test max. leave the slats out to cool.
2.  Test “E” ground quality.  Fluke on volts.  Black lead to airframe ground, red lead to GCU Black test point.  Very small voltage~ .1v.  less is better
3. Volt drop on line contractor.  Fluke meter on volts.  Red lead on upper contactor, bottom big bolt, black lead on same contactor, upper big bolt. Very small voltage~ .1v.  less is better.
4. Ripple test.  use fluke MIN/MAX.

Run each test with only 1 gen online, 50 to 100 amps load, try to hold conditions quite similar for each test.

some other thoughts:
look at big E terminal, small 20awg terminal.

double check each  GCU voltage. Is it stable at 28.5? is it stable with load? is it stable with RPM change?

select cockpit red switch to off.  Is the voltage of a running generator, cockpit switch selected off,  .7v to 1.0v at idle? this checks the quality of the permanent magnets inside the Generator.

ASSURE that NO ENGINE GENERATOR  has a cooling fan installed. (possibly a borescope through the black sooty outlet.) or it mat be necessary to unbolt the cooling exhaust.

Initial problem definition:

#3 Gen Light occasionally, Much troubleshooting. Gen 3 amps tend toward zero. #1 seems to “take the load”

 

History:

#3 gen troubleshooting, #1, #3 gen shunts…..?Removed?

Detailed summary of troubleshooting:

Customer_Invoice_-_Work_Order-_13548-05-2021

Old Auxilec presentation:
AuxilecStarterGeneratorOld

 

 

 

 

 

 

Why take time to remove the upper slat panels during a aileron linkage grease job:

Black mold, and black Vegi-Mite grease.

Half of the linear bearings are difficult to access from the bottom. So they tend to be ignored.

Best to take the time, remove the upper panels and do a though job.

 

 

Page 23. learn to do the self test

winglet AMM Supplement

 

Aviation Partners