SDR CALA2017071402189

Service difficulty report · Control Unit · Boeing 737800*

Difficulty date: July 13, 2017
Submitted: July 14, 2017
Operation: Air carrier
Aircraft: N37293
Make and model: Boeing 737800*
Aircraft serial: 33453
Aircraft time: 38,905 hours, 13,553 cycles
System (JASC): 2450 · AC Power Distribution System
Part: Control Unit
Part number: 115195214
Part serial: 115195202444
Condition: Failed
Location: Standby
Part time: 38,904 hours, 13,553 cycles
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

AT FL 390 2.5 HRS INTO FLT MASTER CAUTION IRS DC FAIL LIGHTS CAME ON SW/HOT BAT BUS CB TRIPPED. EMERGENCY DECLARED. REPLACED STANDBY POWER CONTROL UNIT PER AMM 24-34-11, INSTALLATI ON TEST GOOD, NO FAULTS NOTED, CLEARED FAULTS ON ELECTRICAL PANEL

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