SDR HALA0300292

Service difficulty report · Switch · Boeing 76733A

Difficulty date: April 30, 2003
Submitted: May 30, 2003
Operation: Air carrier
Aircraft: N580HA
Make and model: Boeing 76733A
Aircraft serial: 28140
System (JASC): 5270 · Door Warning System
Part: Switch
Condition: Inoperative
Location: Apu Door
Stage of operation: NR
How discovered: O
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 FAULED TO START. APU DOOR LIGHT CAME ON, NO APU FAULT LIGHT, NO RPM OR EGT. T/S PER FIM 49-11-00/101, FIG 104 BLOCK 24A HIGH RESISTANCE AT PIN 7 OF RELAY DS47. REPLACED DOOR SWITCH, RESISTANCE NOW NORMAL. APU STARTED NORMAL THREE TIMES. SWITCH REPLACED PER MM 49-15-02-4. OK FOR SERVICE. (M)

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