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

Page: 689 / 1956

PAGE 15
Feb 28/07
30-10-00
3J1
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
C. Inspection.
Perform the following inspection when:
(1) For an uninstalled deicer:
(a) The deicer has been stored for more than 84 months.
(b) There is evidence of damage to original packaging.
(c) The deicer is not in original packaging.
(d) There is evidence that deicer was not stored properly.
(2) For an installed deicer if damage or age is suspected of affecting deicer performance.
(3) Procedure
CAUTION: INSTALLATION OR CONTINUED USE OF A DEICER IN CONDITIONS
SPECIFIED IN (1) OR (2), ABOVE, IS AT USER'S DISCRETION.
NOTE: Check for damage with deicer inflated using leak detector fluid. Air leaking damage
can be located and marked for repair. Deicer should not be inflated at pressures
higher than indicated in Chart 3.
(a) Inspect deicer carefully for surface damage: cuts, tears, abrasions, scuffs, cracking and/or
crazing. Check backside (if uninstalled) and breeze side of deicer carefully. Pay particular
attention to air connection area.
CAUTION: REVIEW REPAIR LIMITS, BELOW, TO DETERMINE IF REPAIR IS
PERMITTED.
(b) Repair surface damage detected per Repair Procedure, below.
(c) Inflate deicer with regulated air source to correct operating pressure (see Chart 3). Check
inflation time. Deicer should inflate to operating pressure within six (6) seconds.
(d) When deicer has reached operating pressure, seal off deicer at air connection. Check
deicer pressure after 60 seconds. Pressure drop should not exceed three (3) psi for
deicers with system operating pressure of 14 psi or higher.
(e) Allow deicer to deflate naturally with no vacuum applied. Deflation time should not exceed
22 seconds. When deicer is deflated, check for pockets of trapped air in tubes.
CAUTION: REVIEW REPAIR LIMITS, BELOW, TO DETERMINE IF REPAIR IS
PERMITTED.
(f) If deicer does not pass these tests, check again for damage, perform appropriate repairs
and retest. If deicer still does not meet test criteria, the deicer should be replaced (if
installed) or scrapped (if uninstalled).
(g) If deicer passes all tests, its usability is on condition and the decision to install is at user's
discretion.
CHART 3
PNEUMATIC BOOT OPERATING PRESSURES
Deicer Operating Pressure (PSI) Inflation Sequence
Wing 14 - 15 Alternating
(Upper and Lower tubes inflate separately)
Vertical Fin 10 - 12 Simultaneous
Horizontal Stabilizer 10 - 12 Simultaneous