SDR ASAA2015102313520

Service difficulty report · Anti-Ice System · Boeing 737890

Difficulty date: October 23, 2015
Submitted: October 26, 2015
Operation: Air carrier
Aircraft: N589AS
Make and model: Boeing 737890
Aircraft serial: 35686
Aircraft time: 30,426 hours, 9,275 cycles
System (JASC): 3020 · Air Intake Anti/De-Ice System
Part: Anti-Ice System
Condition: Unknown
Stage of operation: NR
How discovered: O
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

LEFT ENGINE TIA WHEN TURNED ON INDICATED GREEN "TIA" BY THE N1 GUAGE THEN WENT BLANK. THEN WENT AMBER "TAI". QRH 3-2 PERFORMED. NO AMBER COWL ANTI-ICE LIGHT ON OVERHEAD. VALVE POSITION INDICATION TRANSITIONED FROM BRIGHT BLUE TO DIM BLUE, REMAINED DIM BLUE. ACFT GROUNDED. ACCOMPLISHED SUB TASK 30-21-00-720-004. LT COWL ANTI-ICE LIGHT, OPS CK GOOD. PERFORMED NR 1 COWL THERMAL ANTI-ICING, TAI, OPS TEST REF AMM 330-21-00-710-801. TAI AND INDICATION IS OPERATING PROPERLY.