Service difficulty report · Computer · Boeing 737924

Difficulty date
January 25, 2025
Submitted
January 27, 2025
Operation
Air carrier
Aircraft
N72405
Make and model
Boeing 737924
Aircraft serial
30122
Aircraft time
65,101 hours, 27,218 cycles
Part
Computer
Part number
162700100
Part serial
192
Condition
Faulted
Location
Elevator Feel
Part time
70,333 hours, 24,024 cycles
Stage of operation
CL
How discovered
O
Nature of condition
F, J
Precautionary procedure
A

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

What was found

ELEVATOR EXCESS FORCE REQDEBRIEFED CREW-- STATED EXCESSIVE FORCE REQUIRED FOR ELEVATOR MOVEMENT, EMPHASIZED FELT HEAVY/OUT OF TRIM. OCCURRED ON CLIMB OUT TO 16K AND ON FLARE FOR LANDING, SPEED OF 162 KNOTS, LEVELED OFF AT 16K. -- NO LIGHTS OR FAULTS DURING EVENT, WHEN INITIALLY ENGAGING AUTOPILOT, INITIALLY PITCHED DOWN, DISENGAGED AUTOPILOT. SUSPECT OUT OF RIG. CREW REPORTED OVERWEIGHT LANDING--SMOOTH REMOVED ELEVATOR FEEL COMPUTER IAW AMM TASK 27-31-37-000-801 INSTALLED ELEVATOR FEEL COMPUTER IRW AMM TASK 27-31-37-400-801, UP TO, AND INCLUDING, STEP (G)(7). NEED QC VERIFICATION FOR RIG PIN REMOVAL. VERIFIED RIG PIN REMOVED AND STOWED REF AMM 27-31-37-400-801 STEP G(7). IDT REQ C/W. PERFORMED ELEVATOR FEEL COMPUTER LEAK TEST REF 27-31-17-790-801 , 27-31-37-400-801 NO LEAK DECTECTED. CONTINUED INSTALLATION TO STEP (H)(1). PITOT PROBE TOOLING IS STILL ATTACHED FOR FURTHER T/S. OBSERVED EXCESS STIFFNESS IN ELEVATOR CONTROLS WHEN SIMULATING AIRSPEEDS OF 2.46 PSIG (300 KNOTS), BUT NORMAL RESISTANCE WHEN SIMULATED PRESSURE IS RELEASED. FEEL FORCE SYSTEM TEST PASSED AT THIS TIME. COMPLETED STEPS UP TO AND INCLUDING G. (2). PECOMPLETED REF AMM AMM. 27-31-00-700-812 FROM G(3) TO COMPLETION