SDR ASAA11510273

Service difficulty report · Connector · Boeing 737890

Difficulty date: August 19, 2011
Submitted: August 23, 2011
Operation: Air carrier
Aircraft: N593AS
Make and model: Boeing 737890
Aircraft serial: 35107
Aircraft time: 12,961 hours, 4,203 cycles
System (JASC): 7797 · Engine Indicating System Wiring
Part: Connector
Part number: TC29603
Condition: Dirty
Location: Nr 2 Engine
Stage of operation: IN
How discovered: O
Nature of condition: O
Precautionary procedure: K

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

What was found

GE DIAGNOSTICS REPORTS NR 2 ENGINE TREND DATA SHOWS A SHIFT IN EGT HOT DAY MARGIN ALL OTHER PARAMETERS NORMAL. EGT INDICATION ERRORS ARE SUSPECT. ACCOMPLISHED FMC CDU FAULTS TASK CARD 782730000, NO RECENT OR PREVIOUS FAULTS. ACCOMPLISHED EGT INDICATION SYSTEM T/S AND CONNECTOR CLEANING AS FOLLOWS: S1 CHA=125.89 S2CHA=66.00 S3CHB=63.81 S4CHB=126.66. POST CLEANING INDICATIONS S1 CHA=64.08 S2CHB=32.08 S3CHB=31.69 S4CHB=62.60.