SDR AALA201903208008

Service difficulty report · Control Valve · Boeing 757223

Difficulty date: March 18, 2019
Submitted: March 20, 2019
Operation: Air carrier
Aircraft: N196AA
Make and model: Boeing 757223
Aircraft serial: 32390
Aircraft time: 55,016 hours, 17,000 cycles
System (JASC): 2750 · Trailing Edge Flap Control System
Part: Control Valve
Part number: S251N4042
Part serial: 2122
Condition: Malfunctioned
Location: Te Flaps
Stage of operation: LD
How discovered: O
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

ON FINAL, WITH FLAPS AT 20 DEGREES. SELECTED 25 DEGREES AN IMMEDIATE TE FLAPS DISAGREE EICAS MESSAGE. QRH COMPLETE, 20 DEGREES FLAP, LANDING NORMAL, NORMAL BRAKING. AFTER TROUBLESHOOTING, MAINTENANCNE REMOVED AND REPLACED THE FLAP CONTROL MODULE VALVE IAW AMM 27-51-28. OPS CHECKED GOOD.