Service difficulty report · Thermocouple · Boeing 777222

Difficulty date
June 23, 2025
Submitted
June 27, 2025
Operation
Air carrier
Aircraft
N206UA
Make and model
Boeing 777222
Aircraft serial
30212
Aircraft time
103,886 hours, 13,644 cycles
Engine
Pwa PW4090
Part
Thermocouple
Condition
Faulted
Location
Zone 400
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

ADVISORY MSG ENG ELC C1 R REP FAULT CODE 75-61062 ITEM DEFERRED AS PER MEL 7321D. FOUND PROBE M75019 OPEN BETWEEN CR STUD AND AL STUD. FOUND PROBE M75008 WITH HIGH RESISTANCE BETWEEN STUDS. BOTH 2.9 STABILITY BLEED VALVE THERMOCOUPLE PROBES REQUIRES REPLACEMENT