SDR ASAA2016010414640

Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date: January 4, 2016
Submitted: January 6, 2016
Operation: Air carrier
Aircraft: N479AS
Make and model: Boeing 737990ER
Aircraft serial: 60576
Aircraft time: 1,871 hours, 607 cycles
System (JASC): 2421 · AC Generator-Alternator
Part: Warning Light
Condition: False Activation
Location: Nr 2 Generator
Stage of operation: CR
How discovered: 9
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 35,000 FT NR 2 BLUE GENERATOR OFF LIGHT ILLUMINATED. SHOWS 0 VOLTS, 0 FREQ, NO OTHER WARNING OR CAUTION LIGHTS ILLUMINATED. APU STARTER AND BUS COVERED. ACFT GROUNDED. SWAPPED APU GSU BOX TO NR 2 ENGINE, OPS GOOD. SWAPPED NR 2 ENGINE GSU BATTERY BOX TO APU POSITION. RESET IDG NR 2 ENGINE OPS ENGINE, GOOD VOLTS AND FREQUENCY IAW AMM 24-00-00-440-801.