SDR I5EA2021032900012

Service difficulty report · Warning Message · Boeing 7374B7

Difficulty date: March 28, 2021
Submitted: March 29, 2021
Operation: Air carrier
Aircraft: N438US
Make and model: Boeing 7374B7
Aircraft serial: 24560
Aircraft time: 66,902 hours, 44,647 cycles
System (JASC): 2130 · Cabin Pressure Control System
Part: Warning Message
Condition: Illuminated
Location: Cabin Pressure
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: B

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

What was found

CABIN ALTITUDE WARNING LIGHT AND HORN SOUNDED AT 37,000 FEET. CABIN OBSERVED ABOVE 10,000 FEET AND CLIMBING. EMERGENCY DESCENT EXECUTED AND QRH MEMORY ITEMS AND QRH PROCEDURES COMPLETED. PASSENGER OXYGEN MASKS MANUALLY DEPLOYES BY FLIGHT CREW.

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