Service difficulty report · Apu · Boeing 76734AF

Difficulty date
August 25, 2023
Submitted
August 28, 2023
Operation
Air carrier
Aircraft
N356UP
Make and model
Boeing 76734AF
Aircraft serial
37869
Aircraft time
25,044 hours, 9,216 cycles
Part
Apu
Part number
UNKNOWN
Part serial
NA
Condition
Unknown
Location
Unknown
Stage of operation
IN
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

*** SUPPLEMENTAL SDR *** APU GEN INTERMITTENTLY CUTS ON AND OFF*OII 2* PERFORMED APU BITE PROCEDURE IAW FIM TASK 49-11 FAULT TREE 803. T/S TO FIGURE 103 SH 7 TABLE B 'NORMAL STOP SIG' MESSAGE. FURTHER T/S TP FIM49-11-00/101 FIG 133 FOUND SYS SATIS. APU OPS CK'D NML IAW AMM 49-41-00/001. PLACARD REMOVED. DMP REVERSED.

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