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

Page: 685 / 1956

PAGE 11
Feb 28/07
30-10-00
3I21
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
(3) Cement Application.
CAUTION: DO NOT INSTALL IF HUMIDITY IS ABOVE 90% OR IF TEMPERATURE IS
BELOW 50° F. AT THESE EXTREMES, PROPER ADHESION MAY NOT BE
OBTAINED REGARDLESS OF DRYING TIME ALLOWED.
CAUTION: DRY FIT DEICER BEFORE APPLICATION OF CEMENT. SEE LEADING EDGE
PREPARATION, ABOVE.
NOTE: Deicer and leading edge may be cemented for a maximum of 48 hours before actual
installation, if cemented parts are covered and kept clean.
(a) Thoroughly mix cement before using. Apply one even brush coat to the cleaned back
surface of the boot and to the cleaned metal surface of the leading edge.
(b) Allow the cement to air dry for a minimum of one hour at humidity of 75% or lower. If
humidity is 75-90%, drying time will be longer.
(c) Snap a chalk line along the leading edge of the airfoil section. Intensify chalk line on
leading edge and the white reference line on the boot with a ball point pen.
(d) Stir cement and apply a second coat to both surfaces and allow to air dry per (b), above.
(4) Mounting Deicer on Leading Edge.
CAUTION: DO NOT TRIM DEICER CLOSER THAN ONE (1) INCH FROM TUBE AREA AT
ENDS OR CUT-OUT AREAS, AS AIR LEAKAGE OR SEAM SEPARATION CAN
RESULT.
Most boots are made with an excess of material at the inboard and outboard edges for final
trimming after installation and some recessed boots trim on the upper and lower edges.
(a) Holding the backside of the boot close to the leading edge, fasten the end of each non-
kink hose to the corresponding air connection stem. Tinnerman or other suitable non-kink
hose clamps should be used for this purpose. Tighten each clamp with a pair of slip joint
pliers but do not squeeze the clamp so tight that the hose is damaged.
NOTE: If non-kink hose clamps are not available, wrap each hose connection with
several turns of friction tape. Over the tape wrap two separate bindings of safety
wire, about one-half (1/2) inch apart. Each of these bindings should consist of
several turns of wire. Twist together the ends of each binding to tighten. Press the
twisted ends down against the hose. Finally, wrap the wire with several additional
turns of friction tape.
(b) Push the hose connections into the leading edge grommets or seals, as the case may be.
Obtain sufficient personnel to hold boot steady during installation. (Limit handling
cemented side of boot with fingers.)
(c) Continue installation by reactivating the cement along the centerline leading edge surface
and boot in spanwise strips approximately three (3) to four (4) inches wide by eighteen
(18) to thirty-six (36) inches long. Use a clean lint free cloth dampened with Toulene.
Wring and shake cloth to remove excess solvent.
NOTE: Application of vacuum is recommended and makes installation easier.
(d) Using a rubber roller, press the deicer firmly against the wing leading edge, being careful
not to trap any air under the deicer. Always roll parallel to the inflatable tubes. Position the
deicer centerline to coincide with leading edge centerline. Hold boot in this position while
reactivating about three (3) inches around connections and around corresponding holes
in leading edge, using a clean, lint-free cloth moistened with Toluene. Insert connections
in leading edge holes when cement has dried to a tacky state, and press boot to leading
edge with roller in tackified area.