Service difficulty report · Switch · Boeing 7377H4

Difficulty date
November 29, 2023
Submitted
November 30, 2023
Operation
Air carrier
Aircraft
N415WN
Make and model
Boeing 7377H4
Aircraft serial
29836
Aircraft time
72,431 hours, 42,967 cycles
Part
Switch
Part number
UNKNOWN
Condition
Out Of Alignment
Location
Zn 200 Fus Top
Stage of operation
CL
How discovered
9
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

CABIN WOULD NOT PRESSURIZE. MAX CABIN ALT. 12000FT. COMPLIED WITH QRH NO HELP.<[01] ACCOMPLISHED FIM 21-21 TASK 801. DCPC#2 SHOWED F/C30 LOINFL/HILEAKG. DCPC#1 AND #2 DCPC GROUND OPERATIONAL CHECK PER MM 21-31-00 OPS CHECKS GOOD. NO FAULTS. ACCOMPLISHED CABIN PRESSURE LEAK CHECK PER MM 05-51-91. WITHIN MM LIMITS. FDR DOWNLOAD CONFIRMED PNEUMATIC CONTROL SWITCHES OUT OF CONFIGURATION. AIRCRAFT OK FOR SERVICE.<BR>100387 AMT2

More about the Boeing 737-7H4