SDR CA101126001

Service difficulty report · Flap System · Boeing 737*

Difficulty date: November 25, 2010
Submitted: March 15, 2011
Operation: Air carrier
Make and model: Boeing 737*
Aircraft time: 10,339 hours
Engine: Cfmint CFM567B22
System (JASC): 2750 · Trailing Edge Flap Control System
Part: Flap System
Condition: Malfunctioned
Location: Te Flaps
Stage of operation: NR
How discovered: 9
Nature of condition: O
Precautionary procedure: O

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

What was found

A/C IS EXPERIENCING NUMEROUS FLT DIRECTOR ISSUES, AUTOTHROTTLE ISSUES, AUTOPILOT PROBLEMS AND ALSO THE NR 1 ENGINE IS REPORTED TO BE HUNTING 1-2 PERCENT. IN MCC WE ARE GETTING MQ GATEWAY MESSAGES FOR "FLAPSLO" WHICH IS GENERATED WHEN THE AIRCRAFT BELIEVES FLAPS ARE BEING OPERATED ABOVE FL200. FLAPS ARE UP AND INDICATION IS NORMAL ALSO. ALL CB`S ARE IN. DIVERTED AND IT WILL BE TAKEN OFFLINE UNTIL SOMETHING IS FOUND AS THERE IS HISTORY OF THIS.