Service difficulty report · Valve · Boeing 7373H4

Difficulty date
May 28, 2017
Submitted
May 30, 2017
Operation
Air carrier
Aircraft
N389SW
Make and model
Boeing 7373H4
Aircraft serial
26592
Aircraft time
75,619 hours, 58,110 cycles
Part
Valve
Part number
3964421
Part serial
2270
Condition
Faulty
Location
Lt A/C Pack
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
B, A

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

What was found

CABIN ALTITUDE WARN HORN SOUNDED. OXYGEN MASKS WERE DEPLOYED. EMERGENCY DECLARED AND DIVERTED. R & R LT A/C PACK VALVE IAW MM.

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