Service difficulty report · Gasket · Boeing 767306

Difficulty date
July 11, 2019
Submitted
July 17, 2019
Operation
Air carrier
Aircraft
N1399A
Make and model
Boeing 767306
Aircraft serial
27959
Aircraft time
89,102 hours, 16,915 cycles
Part
Gasket
Part number
38764154
Condition
Ruptured
Location
Apu
Stage of operation
NR
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

APU DOES'T START. (<P>TRANSFER TO MDDR #114547 IAW MEL 49-11-01A CAT "C" DUE DATE 21-JUL-19 PLACARD INSTALLED. </P><P>LP 1050740 - M5: TS APU IAW FIM TASK 49-11 FAULT TREE 989, FOUND BOLT ON INLET GUIDE VANE ACTUATOR COVER IMPROPERLY INSTALLED. NEEDS BOLT, PN M512180-37, MDDR 114547 REMAINS OPEN.</P><P>LP 1050742 - M3: UPON FURTHER T/S, FOUND FLOW SENSING MODULE PACK GASKET RUPTURED. PLACED P/N 3876415-4 ON ORDER WITH MCC, DMI 114547 REMAINS OPEN. </P><P>LP 1050744 - M4: REPLACED TOTAL PRESSURE FLOW SENSOR GASKET IAW AMM 49-53-03. APU STARTS GOOD. MDDR REMAINS OPEN FOR BOLT, ON IGV COVER</P><P>LP 1050745 - M7: INSTALLED IGV COVER BOLT IAW AMM 49-52-03 STEP D. THIS CLEARS MDDR 114547. </P><P><BR /></P><P>NOTE - OPENED MDDR 114798 - FOR APU COLD SOAK START VERIFICATION (25-AP-01) </P>)