Table 2 Master Maintenance Plan Task List
Task number
Item Name
Task Description
Interval
Data Module Refer-
ence
27-50/576
Flap actuators (black
anodized) (P/N
978.73.20.309)
Lubricate
300 FH / 12 Months
28-10/145
Fuel tank filler caps
Examine
300 FH / 12 Months
-
28-10/146
Fuel
Remove a sample
from each drain valve
and examine for wa-
ter
300 FH / 12 Months
-
28-10/306
Fuel cross vent and
outward check valve
Operational test
2,400 FH
28-20/32
Engine driven pump
Overhaul
3,500 FH
-
28-20/147
Fuel tank vent valve
and flame arrestor
Operational test
300 FH / 12 Months
28-20/148
Fuel filter element
Remove and clean
300 FH / 12 Months
12-B-28-20-01-00A-
920A-A
and
12-B-28-20-01-00A-
250A-A
28-20/149
Firewall shutoff valve Operate FUEL
EMERG SHUTOFF
lever and make sure
firewall shutoff valve
opens and closes
fully to each dead
stop. Make sure
movement is free and
check if initial pull out
force at lever outer
end is below 44.5 N
(10 lbf)
600 FH / 12 Months
-
28-20/150
Engine driven pump
Examine
300 FH / 12 Months
-
28-20/256
Fuel system compo-
nents
Examine as far
as possible with
those access panels
opened/removed in
this inspection pack-
age.
2,400 FH / 24 Months -
29-10/151
Return line filter dif-
ferential pressure in-
dicator (If installed)
Make sure that it has
not come out. If indi-
cator found out, do
the inspection/check
procedure
600 FH / 12 Months
29-10/153
Reservoir tank (If in-
stalled)
Make sure nitrogen
pressure is correct.
Pressurize as neces-
sary
300 FH / 12 Months
PC-12/47E AMM Doc No 02300, ISSUE 01 REVISION 27 MSN 545, 1001-1719, 1721-1942
12-B-AM-00-00-00-I
UNCLASSIFIED
Effectivity: All
12-B-05-40-00-00A-000B-A
UNCLASSIFIED
07.02.2022 Page 27