SDR ASAA2017050820690

Service difficulty report · Pcu · Boeing 737890

Difficulty date: May 8, 2017
Submitted: May 10, 2017
Operation: Air carrier
Aircraft: N587AS
Make and model: Boeing 737890
Aircraft serial: 35684
Aircraft time: 36,673 hours, 10,673 cycles
System (JASC): 2430 · DC Generating System
Part: Pcu
Part number: 115195214
Part serial: 115195203169
Condition: Failed
Location: Cockpit
Part time: 36,661 hours, 10,667 cycles
Stage of operation: TX
How discovered: O
Nature of condition: J
Precautionary procedure: K

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

What was found

TRU UNIT LIGHT ILLUMINATED ON PREFLIGHT. GROUNDED - YES. VERIFIED DISCREPANCY T3 LIGHT ON. REMOVED AND INSTALLED NEW TR3 UNIT, REF FIM 24-31 TASK 826. PERFORMED TR3 OPS TEST - NO HELP, REF AMM 24-32-11. REMOVED AND INSTALLED NEW SPCU, REF AMM 24-34-11. PERFORMED STANDBY POWER OPS TEST, SYS CHECKS NORMAL, REF AMM 24-34-11.