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

Page: 613 / 1956

PAGE 1
Feb 28/07 3F21
28-10-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
STORAGE
The wing tanks are an integral part of the outboard wing sections. The liquid tight wing tanks are formed
by bonding the wing skins with the ribs and stringers (i.e. - wet-wings). Holes in the ribs and spar permit
movement of the fuel within the wings. There are ten access covers on the underside of each wing for
access to the sealed portion of the tank.
1. Access Covers
In S/N’s 4636021 thru 4636379, wet-wing access covers are sealed with sealant and secured with screws.
In S/N’s 4636380 and up, the wet-wing access covers use Mold-in-Place seals and are secured with
screws.
NOTE: In S/N’s 4636380 and up, the early plain access covers can be used if the newer Mold-in-Place
seal access covers are not available, but they then must be installed using sealant as described
for S/N’s 4636021 thru 4636379 under Installation, below.
A. Removal
(1) Drain all fuel from the wing tank being serviced.
(2) Ensure electrical power is “OFF”.
(3) Remove the access cover as follows:
(a) In S/N’s 4636021 thru 4636379, remove the screws securing the access cover. With a
suitable tool, pry the access cover away from the wing, taking care not to damage the
mating surfaces - especially on the wing. When the access cover becomes free, carefully
lower the cover and sender out of the wing until the electrical connection can be reached
and disconnected.
(b) In S/N’s 4636380 and up, remove the screws securing the access cover and carefully
lower the cover and sender out of the wing until the electrical connection can be reached
and disconnected.
B. Installation
(PIR-PPS50076, Rev. New.)
(1) Ensure electrical power is “OFF”.
(2) In S/N’s 4636021 thru 4636379, apply Products Research Co. (PRC) PR1428-B-2 (or
PR1403G-B-2) sealant and install the access cover on the wing with screws. Allow sealant to
cure 72 hours before refilling tanks.
CAUTION: DO NOT USE ACETONE TO CLEAN COVER AND MATING SURFACE, AS IT IS
NOT COMPATIBLE WITH MOLD-IN-PLACE SEAL MATERIAL.
(3) In S/N’s 4636380 and up, clean access cover and mating surface using isopropyl alcohol. Allow
to air dry for 15 minutes minimum. Loosely install all screws to hold the panel in place. Using
the sequence in Figure 1, lightly snug all screws. Following the same pattern torque all screws
to 25 inch.-lbs.