SDR 97ZZZX1307

Service difficulty report · Lever Assy · Boeing 7373G7

Difficulty date
March 11, 1997
Submitted
March 26, 2000
Operation
General aviation
Filed by
IU6R626N
Aero Controls, LLC
Make and model
Boeing 7373G7
Part
Lever Assy
Part number
69356021
Condition
Bearing Defect
Location
Rudder Pcu
Component
65C370527
Stage of operation
IN
Nature of condition
O
Precautionary procedure
K

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

What was found

TESTING, RUDDER PCU WAS WORKING FOR ABOUT 5 COMPLETE CYCLES SECONDARY STROKE/FLOW TEST PASSED IN BOTH RETRACT AND EXTEND POSITION. IN NEUTRAL TO FULL EXTEND, UNIT WAS BYPASSING AND WANTING TO GO IN THE RETRACT POSITION. IT REQUIRED AN EXCESSIVE AMOUNT OF FORCE TO KEEP IN NEUTRAL OR EXTEND. UNIT WAS PUT IN THE ELECTRICAL POSITION MODE, UNIT WOULD NOT RESPOND. IT WOULD HAVE A 5 TO 10 SECOND DELAY AND THEN WOULD OSCILLATE. COULD NOT CONTROL UNIT WITH THE POSITION KNOB. UNIT WAS OUT IN THE TOGGLE POSITION. IT WAS SHUDDERING IN BOTH DIRECTIONS. BEARING ON LEVER ASSY (18-1106) WAS NOT PROPERLY SECURED CAUSING BEARING TO POP UP ENOUGH TO CAUSE THE PRIMARY SLIDE TO BIND UP CAUSING AN UNWANTED RUDDER INPUT.

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