Service difficulty report · Pressure Switch · Boeing 75729J

Difficulty date
December 18, 2020
Submitted
December 30, 2020
Operation
Air carrier
Aircraft
N757QM
Make and model
Boeing 75729J
Aircraft serial
27203
Aircraft time
60,664 hours, 32,781 cycles
Part
Pressure Switch
Part number
6258781
Part serial
084C2590
Condition
Faulty
Location
Lt A/C Pack
Stage of operation
IN
How discovered
C
Nature of condition
L
Precautionary procedure
K

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

What was found

RIGHT PACK TEMPERATURE CONTROLLER ALT SWITCH BITE. REMOVED AND REPLACED RIGHT PACK ALTITUDE SWITCH, IAW AMM 21-51-17. PERFORMED RIGHT PACK TEMPERATURE CONTROLLER BITE TEST, IAW AMM 21-51-14 NORMAL.

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