Service difficulty report · Wire · Boeing 7378AS

Difficulty date
April 28, 2012
Submitted
September 14, 2015
Operation
General aviation
Make and model
Boeing 7378AS
Aircraft time
32,721 hours
Engine
Ge CFM567B24
Part
Wire
Condition
Broken
Location
Flap Skew Sensor
Stage of operation
DE
How discovered
O
Nature of condition
F
Precautionary procedure
A

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

What was found

(CAN) REF CADORS REPORT NR: 2012O1034. FROM CREW INCIDENT/SAFETY REPORT: - "ON SELECTION OF FLAP 1, FLAP INDICATORS STOPPED PRIOR TO REACHING FLAP 1 AMBER FLAP TRANSIT LIGHT STAYED ILLUMINATED. ADVISED CENTER, WE WERE VECTORED NORTH WEST TO RUN CHECKLIST. QRH T/E FLAP DISAGREE DIRECTED US TO QRH ALTERNATE FLAPS EXTENSION. WHEN ALT FLAP SWITCH WAS ACTIVATED FLAP INDICATORS SPLIT IMMEDIATELY. CHECKLIST DIRECTED US TO ALL FLAPS UP LANDING. ADVISED ATC OF SITUATION, NR OF PASSENGERS, FUEL ETC. THEN ADVISED IC, BRIEFED PASSENGERS, AND INFORMED OPS. WE LANDED WITHOUT INCIDENT. FIRE CREWS WERE STANDING BY AND CHECKED BRAKE TEMPERATURES. PORT BRAKES 25 DEGREES, STARBOARD BRAKES OTBD 25 DEGREES. INBD 45 DEGREES. WE SPOKE TO MAINTENANCE AND RECORDED THE SNAG." MAINTENANCE REPORTS THAT THE FLAPS WERE NOT PHYSICALLY ASSYMETRIC ON ARRIVAL, BUT FLAP SPLIT INDICATION ONLY. A BROKEN WIRE WAS DISCOVERED AT NR 5 FLAP SKEW SENSOR CONNECTOR D11822. THE WIRE WAS REPAIRED AND A NEW CONNECTOR AND BACKSHELL WERE INSTALLED IAW THE SWPM. A FLAP SKEW DETECTION SYSTEM FUNCTIONAL TEST WAS PERFORMED IAW TASK 27-59-00-730-801, WITH SUCCESSFUL RESULTS, AND THE ACFT WAS RETURNED TO A SERVICEABLE CONDITION. NO FURTHER OCCURENCES WERE REPORTED.

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