Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 573 / 1956

PAGE 11
Feb 28/07 3E5
27-30-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
D. Rigging and Adjustment
(PIR-PPS50056-2. Rev. P.)
NOTE: The neutral position of the elevator tab is with the tab trailing edge lined up with the
elevator trailing edge.
(1) Check the tension of the elevator trim tab cables. Adjust the tension to 12 ± 2 pounds. The up
and down cable turnbuckle assemblies should be within 0.10 inch of the same length upon
completion of adjustment.
NOTE: Obtain access to the turnbuckles by rolling the trim wheel to the “full nose up” position
and sliding the tube that surrounds the cables fore and aft, as required.
(2) Place the elevator tab in the neutral position and set the tab indicator at the neutral position
using a suitable locating fixture.
(3) Move the elevator trim wheel aft (nose up) until the positive stop (spacer) on the actuator frame
engages the trim drum housing. Check to ensure that the tab indicator guide pin has not
bottomed out in its slot in the trim wheel.
CAUTION: DO NOT ADJUST THE TWO AFT CURVED RODS WHICH ATTACH TO THE
TAB. THESE RODS MUST NOT BE CHANGED FROM THEIR ORIGINAL
LENGTH OF 9.12 INCHES BETWEEN THE CENTERS OF THE ROD END
HOLE AND THE MOUNTING BUSHING HOLE. A CHANGE IN THEIR LENGTH
WOULD ALTER THE PROPER TAB OPERATING GEOMETRY.
(4) Set the tab to the Elevator Tab (Elevator Neutral) Trailing Edge Down angle specified in Chart 2,
by adjusting the two straight rods which penetrate the aft fuselage bulkhead. The rods must be
within 0.010 inch of the same length upon completion of adjustment. Lock the jam nuts on the
rods.
(5) Move the elevator trim wheel forward (nose down) until the elevator tab is at the Elevator Tab
(Elevator Neutral) Trailing Edge Up angle specified in Chart 2. Check to ensure that the tab
indicator guide pin has not bottomed out in its slot in the trim wheel. Set the adjustable stop
mounted on the stabilizer spar to maintain the specified tab angle. Lock the jam nut.
(6) Operate the elevator through its full travel range with the tab set at both full nose up and full
nose down positions. Operation should be smooth and free.
(7) With the tab neutral and the elevator held securely against each stop, determine the free play
of the tab. Total free play measured at the tab trailing edge should not exceed 0.06 inch.
CAUTION: VERIFY FREE AND CORRECT MOVEMENT OF ELEVATOR TAB. WHILE IT
WOULD SEEM SELF-EVIDENT, FIELD EXPERIENCE HAS SHOWN THAT THIS
CHECK IS FREQUENTLY MISINTERPRETED OR NOT PERFORMED AT ALL.
ACCORDINGLY, UPON COMPLETION OF ELEVATOR TRIM RIGGING AND
ADJUSTMENT, VERIFY THAT THE ELEVATOR TAB MOVES UP WHEN THE
TRIM WHEEL IS TRIMMED DOWN; AND, THAT THE ELEVATOR TAB MOVES
DOWN WHEN THE TRIM WHEEL IS TRIMMED UP.
(8) Check system for proper operation.