SDR IPXA2016110410226

Service difficulty report · Cabin Pressure · Boeing 76734AF

Difficulty date: November 3, 2016
Submitted: November 4, 2016
Operation: Air carrier
Aircraft: N326UP
Make and model: Boeing 76734AF
Aircraft serial: 27752
Aircraft time: 48,215 hours, 15,652 cycles
System (JASC): 2130 · Cabin Pressure Control System
Part: Cabin Pressure
Condition: Malfunctioned
Location: Cabin
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 EICAS AT FL 340 ALONG WITH AURAL WARNING HORN. TROUBLESHOT IAW FIM 21-33-00-815-805 FIG 104, INSPECTED DOORS, WINDOWS PRESSURE SEALS NO FAULTS FOUND. PRESSURIZED ACFT TO 5 PSI NO LEAKS NOTED. R & R NR 2 AUTO PRESSURE CONTROLLER AS A PRECAUTION IAW MM 21-31-02-404-005 & CABIN ALTITUDE CONTROL PANEL IAW MM 21-31-01-404-007, PRESSURIZED ACFT OPS CHECKED GOOD.

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