Service difficulty report · Controller · Boeing 7377H4

Difficulty date
March 19, 2017
Submitted
March 20, 2017
Operation
Air carrier
Aircraft
N708SW
Make and model
Boeing 7377H4
Aircraft serial
27842
Aircraft time
64,763 hours, 38,642 cycles
Part
Controller
Part number
71211997101AC
Part serial
0311931
Condition
Faulty
Location
Cabin Pressure
Stage of operation
UK
How discovered
O
Nature of condition
O
Precautionary procedure
A

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

What was found

DIVERSION, AT FL380, CABIN PRESSURIZATION RATE CYCLED FROM +2500 FPM TO -2000 FPM. DESCENT TO FL360, RATE CYCLED FROM +1800 TO -1000. DESCENT TO FL340. CABIN PRESSURIZATION RATE STABILIZED. R&R NR 1 CABIN PRESSURE CONTROLLER PER AMM.

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