SDR ASAA2016100818250

Service difficulty report · Probe · Boeing 737890

Difficulty date: October 8, 2016
Submitted: October 11, 2016
Operation: Air carrier
Aircraft: N514AS
Make and model: Boeing 737890
Aircraft serial: 35193
Aircraft time: 30,790 hours, 9,300 cycles
Engine: Cfmint CFM567B27
System (JASC): 7720 · Engine Temperature Indicating System
Part: Probe
Part number: TC29603
Condition: Coked
Location: Nr 2 Engine
Stage of operation: IN
How discovered: V
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

NR 2 ENGINE SHOWS SHIFT IN ENGINE TREND MONITORING. ACFT GROUNDED. ACCOMPLISHED TC 78273000, NO FAULTS. CHECKED & RECORDED T49.5 SENSOR VALUES PRE & POST CLEANING, REF LOGPAGE 11585629. CLEANED EGT HARNESS CONNECTORS. OPS GOOD, GROUND VERIFICATION SUCCESSFUL, REF B737-800 AMM 77-21-00. S4 T49.5 PROBE CONNECTOR COKED. REMOVED & REPLACED S4 T49.5 PROBE, IAW AMM 77-21-01. OPS GOOD, GROUND VERIFICATION SUCCESSFUL.