Service difficulty report · Wire · Boeing 76731K

Difficulty date
May 22, 2020
Submitted
June 3, 2020
Operation
Air carrier
Aircraft
N1373A
Make and model
Boeing 76731K
Aircraft serial
27205
Aircraft time
101,733 hours, 21,392 cycles
Part
Wire
Condition
Shorted
Location
Apu
Stage of operation
IN
How discovered
C
Nature of condition
L
Precautionary procedure
K

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

What was found

APU FAULT AND APU WILL NOT START. PERFORMED IGV PUSH PULL IAW FIM 49-11 FT 718 5 LBS, WITHIN LIMITS. PERFORMED WIRE CHECKS PER WDM 49-14-11 PINS A1 AND A2 BOTH ON D408B ARE SHORTED TO SHEILD J9 AND EACH OTHER. FOUND SPLICES SHORTED TO SHIELD AND SPLICES SM12 AND SM13 SHORTED INTERNALLY TO EACH OTHER REPAIRED SPLICES SM 1, SM 2, SM 12, SM13 IAW SWPM 20-30-12 AND EO6749A013. OPS CHECK OF APU GOOD. THIS CLEARS MDDR 128712.

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