Service difficulty report · Egt Indication · Boeing 737890

Difficulty date
April 7, 2022
Submitted
April 8, 2022
Operation
Air carrier
Aircraft
N517AS
Make and model
Boeing 737890
Aircraft serial
35197
Aircraft time
48,314 hours, 14,071 cycles
Engine
Cfmint CFM567B27
Part
Egt Indication
Part number
UNKNOWN
Condition
Out Of Adjust
Location
Unknown
Stage of operation
TO
How discovered
O
Nature of condition
M
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 THE #1 ENGINE EXPERIENCED AN EGT EXCEEDANCE DURING TAKEOFF THAT MAY HAVE EXCEEDED THE TRANSIENT AREA LIMITS. PEAK EGT RECORDED ON REPORT 06 WAS 966 DEGREES DURING TAKEOFF (FLIGHT PHASE 4) GROUNDED - YES. PERFORMED GVI OF #1 ENGINE INLET AND EXHAUST, NO DEFECTS NOTED REF B737-800 AMM 71-00-00-800-804-F00. EEC BITE CHECK SHOWED AN EXCEEDANCE PEAK 967.0 AND IN THE RED SHOWED FOR 7.6 SECONDS (AREA B) NO ENGINE FAULTS RECORDED DURING ACCOMPLISHMENT OF FMC/CDU ENGINE BITE CHECK. REF LP 60345395 FOR PLT DEFERRAL TO TROUBLESHOOT AND, IF POSSIBLE CORRECT THE CAUSE OF THE EGT OVERTEMPERATURE.