SDR HALA2010032100130

Service difficulty report · Relay · Boeing 76733A

Difficulty date: March 21, 2010
Submitted: March 22, 2010
Operation: Air carrier
Aircraft: N583HA
Make and model: Boeing 76733A
Aircraft serial: 25531
Aircraft time: 78,286 hours, 14,198 cycles
System (JASC): 4940 · APU Start/Ignition System
Part: Relay
Condition: Failed
Location: Apu Starter
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

ETOPS SIGNIFICANT SYS - APU FAILED TO START FAULT LIGHT ILLUM ICAS MSSG APU FAULT DISPLAYED 2ND ATTEMPT INDICATES EGT HIGH. FRM CODE: 49110900. PERFORMED FIM 49-11-00 FIGURE 103-APU BITE PROCEDURE, FOUND MINI FLAG 34, PERFORMED FIM 49-11-00 FIG 106A, REPLACED K197 APU START RELAY. OPS CHECK APU-GOOD. RE-PERFORMED APU BITE PROCEDURE, NO FAULTS NOTED, OK FOR SERVICE.

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