SDR ASAA2019010627695

Service difficulty report · Unknown · Boeing 737890

Difficulty date: January 6, 2019
Submitted: January 9, 2019
Operation: Air carrier
Aircraft: N530AS
Make and model: Boeing 737890
Aircraft serial: 36578
Aircraft time: 34,337 hours, 10,160 cycles
System (JASC): 2430 · DC Generating System
Part: Unknown
Condition: Malfunctioned
Location: Cockpit
Stage of operation: TX
How discovered: O
Nature of condition: J
Precautionary procedure: D

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

What was found

AFTER ENGINE START ATTEMPTED TO PUT GEN1 ON THE BUS WE COULD NOT ESTABLISH ELECTRIC W/ GEN 1 AND SAW THE TR UNIT LIGHT WAS ILLUMINATED. GROUNDED - YES. INTERROGATED CREW FOUND EXTERNAL POWER HAD AN INTERRUPTION RESET TRU 1,2,3 C/BS AFTER SHUTTING DOWN POWER, REINITIALIZED POWER, REF AMM 24-32-11 TRU INSTALLATION TEST WITH APU POWER. TESTED GOOD ALL 3 TRU'S OPS TESTED. IDG NR 1 AND NR 2 WITH NR 1 AND NR 2 ENGINE UNDER GROUND POWER OPS TEST REF 24-11-00 LOAD TESTED GOOD, OPS TESTED GOOD.