Service difficulty report · Probe · Boeing 7377H4

Difficulty date
September 27, 2025
Submitted
September 30, 2025
Operation
Air carrier
Aircraft
N222WN
Make and model
Boeing 7377H4
Aircraft serial
34290
Aircraft time
65,165 hours, 39,138 cycles
Engine
Cfmint CFM567B242
Part
Probe
Condition
Failed
Location
Nr 1 Engine
Stage of operation
CL
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

APPROXIMATELY 5 MINUTES AFTER TAKE OFF. WE OBSERVED #1 EGT GAGE SOLID AMBER. WITH APPROXIMATELY 915 INDICATED. WE REDUCED THRUST ON THAT ENGINE; AND INDICATIONS RETURNED TO NORMAL. EXCEEDANCE LASTED APPROX 10 SECONDS.<[01] T/S WITH FIM 71-06-804; EEC NO FAULTS; PNEU LEAK CHECK GOOD MM 71-00-00-700-809-F00.<BR>65% AND 75% POWER ASSURANCE GOOD IAW MM 71-00-00; BOROSCOPE GOOD REF 772-00-10. FOUND EGT SYSTEM DISCREPANCIES SEE TTG8Q015E055; TTG8Q015E02Y; TTG8Q015DYHC. ACFT OK FOR SERVICE

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