Service difficulty report · Engine · Boeing 7378H4

Difficulty date
July 22, 2024
Submitted
July 23, 2024
Operation
Air carrier
Aircraft
N8640D
Make and model
Boeing 7378H4
Aircraft serial
60084
Aircraft time
34,205 hours, 16,375 cycles
Engine
Cfmint CFM567B27E
Engine time
34,205 hours, 16,376 cycles
Part
Engine
Part number
CFM567B27E
Part serial
660144
Condition
Deteriorated
Location
Zone 400
Stage of operation
CL
How discovered
O
Nature of condition
R, J
Precautionary procedure
A

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

What was found

ON CLIMB OUT EGT EXCEED 925' ON #2 ENGINE (ENGINE EXCEEDENCES PAGE SHOWS PEAK 957'; RED 950' FOR 7.8S)<[01] PERFORMED GVI OF #2 ENGINE INLET AND EXHAUST; INSPECTED EGT PROBS CONNECTORS AND NO DEFFECTS FOUND. PER POWERPLANT ENGINEERING TSR TRACKING #2024005074 OVERTEMP OCCURRED ON HIGH-PERFORMANCE TAKEOFF (NEAR 0 DE-RATE) IN HOT AMBIENT CONDITIONS; THE ENGINE CURRENTLY HAS LOW EGT MARGIN. ENGINEERING WOULD CONSIDER THE CAUSE OF THIS EXCEEDANCE DUE TO ENGINE DETERIORATION; PER AMM 71-00-00-800-804-F00 THIS SHOULD BE LOGGED AS 1 OF 10 ALLOWABLE EGT OVER TEMPERATURES. PLANNED ENGINE WASH WILL BE THE CORRECTIVE ACTION FOR THIS CONDITION. OK TO CONTINUE PER TLD AUTH # 205371.

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