SDR AALA20150617010

Service difficulty report · Gcu · Boeing 737823

Difficulty date: June 14, 2015
Submitted: June 17, 2015
Operation: Air carrier
Aircraft: N947AN
Make and model: Boeing 737823
Aircraft serial: 29536
Aircraft time: 44,740 hours, 18,315 cycles
System (JASC): 2424 · AC Regulator
Part: Gcu
Condition: Defective
Location: Zone 100
Stage of operation: CR
How discovered: O
Nature of condition: H, J
Precautionary procedure: A

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

What was found

AIR INTERRUPT, DIVERTED, NO EMER WAS DECLARED, LANDING WAS UNEVENTFUL & ACFT WAS NOT OVERWEIGHT. NR 2 SOURCE OFF LIGHT ILLUMINATED IN FLIGHT. PRIOR TO SOURCE OFF LIGHT THE NR 1 TR UNIT AMPS WERE FLUCTUATING BETWEEN 5 - 0. THE TR UNIT LIGHT ILLUMINATED INTERMITTENTLY UNTIL THE NR 2 SOURCE LIGHT ILLUMINATED. NR 1 TR UNIT OPERATES NORMAL AFTER NR 2 SOURCE OFF LIGHT ILLUMINATED. REPLACED GEN CONTROL UNIT IAW AMM 24-21-81. PLEASE SEE AALA20150614002 & AALA20150617011 FOR ADDITIONAL PART INFORMATION.