SDR IPXA2024052827333

Service difficulty report · Warning Message · Boeing 75724APF

Difficulty date: May 23, 2024
Submitted: May 28, 2024
Operation: Air carrier
Aircraft: N423UP
Make and model: Boeing 75724APF
Aircraft serial: 25325
Aircraft time: 34,315 hours, 22,519 cycles
System (JASC): 2130 · Cabin Pressure Control System
Part: Warning Message
Condition: Illuminated
Location: Cabin Pressure
Stage of operation: CL
How discovered: 9
Nature of condition: J
Precautionary procedure: O

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

What was found

**SUPPLEMENTAL SDR** **ATB** AT TOP OF CLIMB, FL400, RECEIVED CABIN ALTITUDE WARNING, CABIN AUTO INOP. AIR TURN BACK TO SDF REPAIRED DUCT SENSOR MOUNTING BOSS IAW SREO-21276-REQ001. REINSTALLED ORIGINAL DUCT. OPS CHECK GOOD WITH REF TO MM 21-00-00-862-001.

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