Service difficulty report · Bleed Air Sys · Boeing 76733A

Difficulty date
July 12, 2019
Submitted
July 18, 2019
Operation
Air carrier
Aircraft
N1439A
Make and model
Boeing 76733A
Aircraft serial
28495
Aircraft time
69,831 hours, 16,309 cycles
Part
Bleed Air Sys
Condition
Malfunctioned
Location
Apu
Stage of operation
UK
How discovered
O
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

NO DUCT PRESSURE DURING APU OPERATION.(<P>TRANSFERRED TO MDDR 114602 PER 49-11-01-01 CAT C DUE 21JUL19 VALVE LOCKED OUT PER DDG 36-11-01.</P><P>LP 1080383 - M2: PUT THE AIRPLANE BACK IN ITS USUAL CONFIGURATION. PERFORMED FIM 36-10 FAULT TREE 839. NO FAULTS NOTED. RAN BOTH PACK AIR VALVES AND DRY MOTORED AN ENGINE WITH NO FAULTS. APU BLEED OPERATES AS NORMAL. SEE ITEM 3</P><P>LP 1080383 - M3: PER CUSTOMER REQUEST, R&R APU ECU IAW AMM 49-61-05. OPS CHECK GOOD. THIS CLEARS DMI 114602. PLACARDS REMOVED. NO OTHERS DEFECTS NOTED AT THIS TIME.</P>)

More about the Boeing 767-33A