Service difficulty report · Control Cable · Emb ERJ190100IGW

Difficulty date
May 21, 2013
Submitted
September 14, 2015
Operation
General aviation
Make and model
Emb ERJ190100IGW
Aircraft time
16,871 hours
Engine
Ge CF3410E5A1
Part
Control Cable
Condition
Mislocated
Location
Ailerons
Stage of operation
IN
How discovered
9
Nature of condition
W
Precautionary procedure
K

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

What was found

(CAN) DURING B CHECK THE AILERON CABLE SYSTEM WAS MODIFIED AS PER REF/A/. FOLLOWING THE AIRFRAME VISIT, CABLE CONTACT WAS NOTED ON THE GROMMET AT THE WHEEL WELL, THE CABLE ORIENTATION WAS ALSO FOUND ROTATED APPROXIMATELY 90DEGREES FROM THE SB ILLUSTRATION. FOLLOWING DISCUSSION WITH ENGINEERING THE AIRCRAFT WAS ROUTED FOR FURTHER INVESTIGATION. MAINTENANCE AND ENGINEERING CONFIRMED THAT THE CABLES WERE CONTACTING THE GROMMET AND WERE ROTATED BY APPROXIMATELY 90DEGREES AT THE WHEEL WELL BULKHEAD. FURTHER INVESTIGATION FOUND THE CABLES TO BE INSTALLED ON THE WRONG PULLEY AT RIB 8, THIS INCORRECT INSTALLATION RESULTED IN THE CABLE ROTATION AT THE WHEEL WELL BULKHEAD AND A REDUCED CLEARANCE BETWEEN THE CABLES OUTBOARD OF RIB 8. THE REDUCED CLEARANCE WAS A RESULT OF THE INDUCED CABLE TWIST OUTBOARD OF RIB 8. SINCE THE INCORRECT INSTALLATION DID NOT EXPLICITLY DEVIATE FROM THE SB AND THE GROMMET CONTACT WAS COVERED BY REF/B/A PP WAS ISSUED TO DEFER THE CABLE POSITIONING RECTIFICATION. RECTIFICATION THE AIRCRAFT WAS IN STATION YESTERDAY ON CDT TO RECTIFY THE DEFECT. THE CABLES WERE MOVED TO THE APPROPRIATE PULLEY BY REMOVING THE PANEL SHOWN IN REF/C/. THE AMES WERE ABLE TO SWITCH THE CABLE BETWEEN THE PULLEYS BY REMOVING THE CABLE GUARD AND MOVING THE CABLES BY HAND, SPLITTING THE CABLES OR REDUCING THE CABLE TENSION IS NOT REQUIRED, MOVING THE CABLES REQUIRED 4-8HRS INSTEAD OF 48HRS IF THE CABLE ARE SPLIT AS PREVIOUSLY PREDICTED. SWITCHING THE CABLES TO THE CORRECT PULLEYS AT RIB 8 RESULTED IN MOVING THE CABLE TWIST INBOARD OF RIB 8, WHICH PROVIDED THE REQUIRED CLEARANCE AT THE WHEEL WELL BULKHEAD GROMMET AND IMPROVED THE CLEARANCE BETWEEN THE CABLES OUTBOARD OF RIB 8.

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