SDR AALA202603117626

Service difficulty report · Controller · Boeing 737823

Difficulty date: March 8, 2026
Submitted: March 11, 2026
Operation: Air carrier
Aircraft: N862NN
Make and model: Boeing 737823
Aircraft serial: 30905
Aircraft time: 44,928 hours, 19,240 cycles
System (JASC): 2131 · Cabin Pressure Controller
Part: Controller
Condition: Inoperative
Location: Zone 100
Stage of operation: CR
How discovered: O
Nature of condition: O
Precautionary procedure: B, A

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

What was found

AIRCRAFT WAS GROUNDED: AT 360 WE RECEIVED CABIN ALTITUDE AND IMMEDIATELY RAN THE QRC. THE CABIN WAS UNCONTROLLABLE IN MANUAL MODE. WE DEPLOYED THE OXYGEN MASKS WHILE EXECUTING THE CHECKLIST. AIRCRAFT DIVERTED TO TULSA AND FLIGHT LANDED SAFELY WITHOUT INCIDENT. **SUPPLEMENTAL REPORT FOR SDR AALA202603097626 SUBMITTED BY DFW ON 3/8/26 **(CLOSED)** MAINTENANCE REPLACED THE #1 CABIN PRESSURE CONTROLLER IAW AMM 21-31-01.