SDR ASAA2014101209361

Service difficulty report · Probe · Boeing 737890

Difficulty date: October 12, 2014
Submitted: October 15, 2014
Operation: Air carrier
Aircraft: N583AS
Make and model: Boeing 737890
Aircraft serial: 35681
Aircraft time: 27,530 hours, 8,196 cycles
Engine: Cfmint CFM567B27B3
System (JASC): 7720 · Engine Temperature Indicating System
Part: Probe
Part number: TC29604
Condition: Malfunctioned
Location: Nr 2 Engine
Stage of operation: IN
How discovered: 9
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

DIAGNOSTIC REPORTS NR 2 ENGINE CONTINUES TO SHOW GREATER THAN EXPECTED DATA SCATTER AND MARGIN LOSS. INDICATION ERRORS STILL SUSPECT. ACFT GROUNDED. ACCOMPLISHED T49.5 PROBE AND EGT SYSTEM INSPECTION, REF TASK 77-21-01-200-801-F00. FOUND RESISTANCE FOR T49-5 S2 PROBE HIGH. R & R S2 T49-5 PROBE IAW AMM TASK 77-21-01-000-801-F00 AND 77-21-01-400-801-F00. FOR ENG NR 2. PERFORMED NR 2 EEC TEST REF AMM TASK 73-21-00-70-804-F00. TEST PASSED. NO FAULTS LOGGED.