SDR ASAA2016030515752

Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date: March 5, 2016
Submitted: March 7, 2016
Operation: Air carrier
Aircraft: N486AS
Make and model: Boeing 737990ER
Aircraft serial: 44107
Aircraft time: 1,776 hours, 576 cycles
System (JASC): 2421 · AC Generator-Alternator
Part: Warning Light
Condition: False Activation
Location: Idg
Stage of operation: TX
How discovered: O
Nature of condition: N
Precautionary procedure: D

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

What was found

JUST PRIOR TO TAKEOFF, RT GENERATOR DRIVE LIGHT ILLUMINATED, REF QRH, DISCONNECTED RT GENERATOR. ACFT GROUNDED. PERFORMED GCU BITE PROCEDURE, REF FIM 24-21, TASK 801. FOUND GCU NR 2 IDG FAULT. ACCOMPLISHED INITIAL EVALUATION FOR IDG FAULT, GCU 2, REF FIM 24-21, TASK 806. IDG OPERATES NORMALLY UNDER FULL LOAD. NO MAINTENANCE MESSAGES NOTED.