Service difficulty report · Control System · Doug DC931

Difficulty date
November 4, 2007
Submitted
November 13, 2007
Operation
Air carrier
Aircraft
N8923E
Make and model
Doug DC931
Aircraft serial
45838
Aircraft time
72,169 hours, 76,933 cycles
Part
Control System
Condition
Out Of Rig
Location
Slats
Stage of operation
AP
How discovered
O
Nature of condition
F
Precautionary procedure
O

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

What was found

WHEN THE SLATS WERE SELECTED TO EXTEND DURING THE APPROACH FOR LANDING, THE BLUE "SLAT DISAGREE" LIGHT ILLUMINATED AND WAS ACCOMPANIED BY AN AIRCRAFT ROLL TO THE RIGHT. THE FLAP/SLAT COMBINATION WAS RECYCLED AND THE FIRST OFFICER VISUALLY VERIFIED FLAPS HAD EXTENDED. AFTER A 5 MINUTE PAUSE THE SLATS EXTENDED EQUALLY, FULLY, AND ALL COCKPIT INDICATIONS WERE NORMAL. THE FLIGHT CREW PERFORMED AN UNEVENTFUL LANDING AT MBS. AIRCRAFT WAS FERRIED TO DTW WHERE MAINTENANCE REPLACED SLAT CONTROL CABLES AND PULLEYS, RIGGED THE CONTROL SYSTEM, AND FUNCTIONALLY CHECKED ALL WING DEVICES. THE AIRCRAFT HAS RETURNED TO SERVICE.

More about the Doug DC-9-31