Service difficulty report · Relay · Boeing 76733A

Difficulty date
May 18, 2019
Submitted
May 21, 2019
Operation
Air carrier
Aircraft
N1997A
Make and model
Boeing 76733A
Aircraft serial
27310
Aircraft time
95,617 hours, 19,367 cycles
Part
Relay
Part number
CC07081MUA34B
Part serial
R818
Condition
Failed
Location
Apu
Stage of operation
IN
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

APU COULD NOT START "START ABORTED" ON BITE (<P>TRANSFERRED TO MDDR 111830 IAW DDG 49-11-01A CAT "C".</P><P>LP 1074463 - M7: R&R APU BATTERY IAW AMM 24-31-04. NO HELP. MDDR REMAINS. BATTERY OFF PART (P/N: 4579, S/N: 113363)</P><P>LP 1074463 - M8: R&R APU BATTERY CHARGER IAW AMM 24-31-05. NO HELP. CHARGER OFF PART (P/N: 4-254-04, S/N: 2872). <BR /></P><P>LP 1074468 - M2: REMOVED AND REPLACED APU BATTERY IAW AMM 34-31-04-004-001. BATTERY OFF PART (P/N: 018550-000, S/N: 090520006BE0D)</P><P>LP 1074468 - M3: REMOVED AND REPLACED APU CRANK CONTACTOR RELAY IAW SWPM 20-81-21. OPS CHECK GOOD. THIS CLEARS MDDR 111830. MCC NOTIFIED. PLACARDS REMOVED.</P>)

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