OpenAirDocs.org

SDR ASAA2017121522937

Open the Markdown

Service difficulty report · Probe · Boeing 737890

FAA SDR system

Difficulty date
December 15, 2017
Submitted
January 2, 2018
Operation
Air carrier
Aircraft
N590AS
Make and model
Boeing 737890
Aircraft serial
35687
Aircraft time
37,966 hours, 11,479 cycles
Engine
Cfmint CFM567B27B3
System (JASC)
7720 · Engine Temperature Indicating System
Part
Probe
Part number
TC28603
Condition
Failed
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

WHILE PERFORMING T/C 78273000 FOUND F/C 73-31372 NR 2 ENGINE. ACFT GROUNDED. PERFORMED FIM 77-21 TASK 801. COMPLETED EGT INDICATION SYSTEM TROUBLESHOOTING AND CONNECTOR CLEANING IAW AMM 77-21-00-140-801. PERFORMED T49.5 AND EGT SYSTEM INSPECTION IAW AMM 77-21-01-200-801-F00. FOUND S1, S3, AND S4 RESISTANCE OUT OF LIMITS. REMOVED AND REPLACED S1, S3, AND S4 IAW AMM 77-21-01/401. EEC TEST PASSED, PERFORMED SUCCESSFUL REPAIR CONFIRMATION OF FIM 77-21 TASK 801, AND SUCCESSFUL ETOPS GROUND VERIFICATION. PERFORMED SUCCESSFUL REPAIR CONFIRMATION IAW FIM 73-11 TASK 801.