Service difficulty report · Warning Light · Boeing 737890

Difficulty date
August 9, 2014
Submitted
August 12, 2014
Operation
Air carrier
Aircraft
N579AS
Make and model
Boeing 737890
Aircraft serial
35187
Aircraft time
28,500 hours, 8,504 cycles
Engine
Cfmint CFM567B27
Part
Warning Light
Condition
Illuminated
Location
Nr 2 Engine
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

NR 2 ENGINE, MAGENTA, "XB" CAME ON INTERMITTENT. NO OTHER ABNORMAL ENGINE INDICATIONS. ACFT GROUNDED. ACCOMPLISHED FIM 76-05, TASK 809 "X-BLD INDICATION DISPLAYED OVER N2 INDICATOR DURING NORMAL ACFT OPERATION FAULT ISOLATION" AND NR 2 ENGINE EEC BITE SHOWS FAULT MSG 76-31362 START LEVER SIGNAL DISAGREE, LONG TERM FAULT, LAST 3 LEGS OUT OF 11 FLT LEGS. CYCLED NR 2 START LEVER NUMEROUS TIMES TO CLEAR M1825 START LEVER SWITCH MODULE. RE-ACCOMPLISHED FIM 76-05 TASK 809 AND FIM 76-11 TASK 801 AFTER ENGINE RUN-UP. FAULTS CLEARED OPS CL NORMAL. ACCOMPLISHED DFCS LAND VERIFY (GP49) AND HGS SYSTEM TEST REF AMM 22-11-00 & SMM 34-36-00, OPS CK NORMAL.