Service difficulty report · Switch · Boeing 75729J

Difficulty date
September 21, 2022
Submitted
September 27, 2022
Operation
Air carrier
Aircraft
N757QM
Make and model
Boeing 75729J
Aircraft serial
27203
Aircraft time
64,357 hours, 33,719 cycles
Part
Switch
Part number
6258781
Part serial
084C2590
Condition
Inoperative
Location
Rt A/C Pack
Stage of operation
CL
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

RIGHT PACK TEMP EICAS MSG INTERMITTENT DISPLAYED AND R PACK OFF EICAS MSG WOULD NOT DISPLAY WHEN THE PACK WAS NOT OPERATING. DURING THE RIGHT PACK TEMP CONTROLLER BITE, THE ALTITUDE SWITCH WAS FLAGGED AND REPLACED PER THE APPLICABLE AMM. NO FAULTS WERE NOTED DURING THE BITE CHECK AFTER REPLACEMENT.

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