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SDR ASAA2016062217133

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Service difficulty report · Probe · Boeing 737890

FAA SDR system

Difficulty date
June 22, 2016
Submitted
June 24, 2016
Operation
Air carrier
Aircraft
N588AS
Make and model
Boeing 737890
Aircraft serial
35685
Aircraft time
33,040 hours, 10,045 cycles
Engine
Cfmint CFM567B27
System (JASC)
7722 · Engine EGT/TIT Indicating System
Part
Probe
Part number
TC29604
Condition
Failed
Location
Nr 2 Engine
Stage of operation
IN
How discovered
O
Nature of condition
N
Precautionary procedure
K

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

What was found

WHILE ACCOMPLISHING T/C 78273000. FOUND NR 2 ENG ECONOMIC FAULT MSG 73-31372, UPPER EGT SECTORS READING HIGH. ACFT GROUNDED. REF FIM 73-11, TASK 801, UPPER EGT SECTORS READING HIGH. EEC BITE RESULTS: ECONOMIC FAULTS 73-11372, 73-21372 ON RECENT FAULTS. ENGINE 2, T495 BEFORE TEMPS: S1:63.37, S2:28.62, S3:30.12, S4:64.75. DURING EGT CLEANING, S1 + S4 T495 EGT PROBES RESISTANCE OUT OF LIMITS. R & R S1 + S4 PROBES REF AMM 77-21-01. NO FURTHER FAULTS NOTED. T495 TEMPS AFTER: S1:26.00, S2:14.87, S3:15.00, S4:24.75. EEC GROUND TESTS PASS.