SDR ASAA2016040716307

Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date: April 7, 2016
Submitted: April 11, 2016
Operation: Air carrier
Aircraft: N413AS
Make and model: Boeing 737990ER
Aircraft serial: 35205
Aircraft time: 12,308 hours, 3,951 cycles
System (JASC): 3150 · Central Warning
Part: Warning Light
Condition: False Activation
Stage of operation: TX
How discovered: O
Nature of condition: N
Precautionary procedure: O

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

What was found

TR UNIT AMBER LIGHT ILLUMINATED ON PREFLIGHT WITH GROUND POWER CONNECTED. ACFT GROUNDED. VERIFIED FAULT, FOUND ALL 3 TRU C/B'S OPEN, 1 ON P91 & 2 ON P92 OPEN. BOTH PANEL'S INSPECTIONS, NO DEFECTS FOUND. CLOSED PANELS, CLOSED C/B'S ALL 3. ACCOMPLISHED INSTALLATION, TEST OF ALL 3 TRU'S ALL 3 PASSED TEST AND ALL 3 C/B'S STAYED CLOSED. NO AMBER TRU FAULTS, REF AMM 24-32-11-400-801 & 20-60-01-860-801.