Elevator Trim Tab; Elevator Trim Tab Push Rods Attach Brackets; Elevator Trim Tab Rods Corrosion Control Inspection - Piper Malibu Meridian PA-46-500TP Airplane Maintenance Manual

(4) After balancing the tool, reattach it to the control surface per Figures 1 and 2. Keep the beam
positioned 90° from the control surface hinge line.
(5) Determine balance of control surface by sliding movable weight along the balance beam.
(6) Read the scale when the bubble level has been centered. Multiply by three to determine inch-
lbs. (I.E. - Since the movable weight weighs three pounds, every inch it is moved from the
center of the beam equals three inch-lbs of force.)
3.

Elevator Trim Tab

The elevator trim tab is attached to the elevator by three piano hinges along the top forward edge of the
trim tab.
A. Removal
(1) Disconnect the trim tab push rods.
(2) Remove the three piano hinge pins.
B. Installation
(1) Align the two halves of the three piano hinges and secure with pins.
(2) Connect the trim tab push rods.
4.

Elevator Trim Tab Push Rods Attach Brackets

If the elevator trim tab push rods attach brackets are removed and replaced or reinstalled, ensure that a
coat of waterborne, chromated, fluid resistant, epoxy primer (i.e. - PRC Desoto) is applied between the
tab skin and the brackets to eliminate surface corrosion.
5.

Elevator Trim Tab Rods Corrosion Control Inspection

Each five years, remove the elevator trim tab rods from the airplane and inspect as shown in Figure 3
for corrosion and condition. Repair/replace as required. When inspection and repair/replacement are
completed, reapply Dinitrol AV 8 (P/N 89500-800) Corrosion Inhibiting Compound.
NOTE: For all fittings, inspection of the exposed portion is sufficient unless obvious or extensive
corrosion is apparent.
NOTE: Any part exhibiting flaking of the metal due to rust must be replaced. The elevator trim tab
actuator push rods must be replaced if rust is evident extending from inside the tubes.
A. When inspection and repair or replacement are completed, apply Dinitrol AV 8 to elevator trim tab
actuator push rod tubes.
CAUTION: READ PRECAUTIONS ON CONTAINER LABEL AND WEAR A CHARCOAL FILTER
MASK WHEN APPLYING DINITROL AV 8.
B. Apply Dinitrol by spraying or brush. Use an air or airless spray gun if available. A hand aspirator
bottle may be used if a sufficient fan spray pattern can be developed. Product should not be
thinned.
C. Spray directly into mating points. Pour inside the lower (curved) elevator trim tab actuator push rod
tubes until full and drain.
D. Apply to approximately .8 mils in thickness. Avoid puddling and running. Allow to dry (6 to 8 hours)
before reinstalling elevator trim tab rods.
55-20-00
PAGE 4
Apr 15/07
PIPER AIRCRAFT, INC.
PA-46-500TP, MALIBU MERIDIAN
MAINTENANCE MANUAL
6H24