Malibu Boats PA-46-310P Pilot Operating Handbook page 241

PIPER AIRCRAFT CORPORATION
PA-46-310P, MALIBU
(b) Exterior
Exterior bottom painted surfaces of the aircraft must be cleaned
from the firewall to the tip of the tail including the bottom of the tail
surfaces, at termination of each flight when the relief tube
system has been used. Cleaning should occur in accordance
with paragraph 8.35(c) with the following exception: After
completion of washing, a solution of baking soda (10%) and
water should be applied to the entire area and allowed to
remain for a few minutes. The area then must be thoroughly
rinsed with clean water. The area should be thoroughly dried
and observed for paint chips and corrosion, with touch up as
necessary.
REVISED: OCTOBER 31, 1997
SECTION 8
HAND/SERV/MAINT
REPORT: VB-1300
8-23