SDR UIEA2014011500011

Service difficulty report · Control Unit · Boeing 7673JHF

Difficulty date: January 15, 2014
Submitted: January 22, 2014
Operation: Air carrier
Aircraft: N643GT
Make and model: Boeing 7673JHF
Aircraft serial: 37809
Aircraft time: 3,014 hours, 649 cycles
System (JASC): 4950 · APU Bleed Air System
Part: Control Unit
Condition: Malfunctioned
Location: Apu
Stage of operation: IN
How discovered: C
Nature of condition: O
Precautionary procedure: H

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

What was found

APU BLEED FUNCTION INOPERATIVE, AFT APU START. R&R APU CONTROL UNIT & IGV ACTUATOR IAW AMM 49-61-05 & 49-52-02. PERFORMED PNEUMATICS FUNCTIONAL CHECK IAW AMM 49-11-00, OPERATIONS CHECKED NORMAL. APU CONTROL UNIT OFF PN 2117342, SN 82-C0082, EGV ACTUATOR PN OFF 3886167-4 & SN 3631.

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