Service difficulty report · Controller · Boeing 737436

Difficulty date
January 23, 2024
Submitted
January 24, 2024
Operation
Air carrier
Aircraft
N733CK
Make and model
Boeing 737436
Aircraft serial
25849
Aircraft time
60,156 hours, 40,473 cycles
Part
Controller
Part number
7638105
Part serial
84011585
Condition
Failed
Location
Cabin Pressure
Stage of operation
CL
How discovered
V
Nature of condition
G
Precautionary procedure
A

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

What was found

DURING TAKEOFF ROLL ALL AIR DATA INFORMATION ON F/O SIDE NO ANALOG AIRSPEED, DIGITAL AIRSPEED, AC ALTIMETER, NO VSI, AND VAU WOULD NOT ENGAGE. DURING TAKEOFF CLIMB, FWD ENTRY LIGHT ILLUMINATED. CABIN ALT UNCONTROLLABLE IN AUTO MODE. ALL OF THESE RELATE TO THE SAME PROBLEM AND FIXED BY R/R THE CABIN PRESSURE CONTROLLER.