SDR UIEA2019041973898

Service difficulty report · Monopole · Boeing 767306

Difficulty date: April 16, 2019
Submitted: April 22, 2019
Operation: Air carrier
Aircraft: N1409A
Make and model: Boeing 767306
Aircraft serial: 27960
Aircraft time: 90,300 hours, 17,128 cycles
System (JASC): 4997 · APU System Wiring
Part: Monopole
Part number: 38760263
Condition: Loose
Location: Nr 2
Stage of operation: TX
How discovered: 9
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 INOP. PERFORMED APU CONTROL UNIT BITE TEST IAW AMM 49-61-05. FOUND SPEED SENSOR #1 & 2 FAULTED ON ECU PREVIOUS 3RD & 4TH STARTS. PER MCC PERFORMED OPS CHECK OF APU . OPS NORMAL. NO DEFECTS NOTED. COMPLIED WITH WDM 49-16-11, & CONTINUITY GOOD BOTH MONOPOLES WITH THE ECU. FOUND MONOPOLE 2 TO BE LOOSE. REMOVED AND REPLACED MONOPOLE 2 WITH NEW IAW AMM 49-61-02. PERFORMED ECU BITE PER AMM 49-61-05. NO FAULTS FOUND.