4
Miscellaneous Limitations
Table 4 Miscellaneous Limitations
Task number
Component
Procedure
Limitation
Reference
21-20/317
ECS emergency shut-
off system
Attach a spring bal-
ance to the ECS
EMER SHUT-OFF
lever. Pull the lev-
er and check that
the max pull force
to open the ram air
scoop is 100 N (22.5
lbf) and make sure
that the ram air scoop
is completely open
3,000 FH / 12 Months
See Note 2
-
21-30/318
MSN 1001-1719 -
Pressurization dump
switch
Operational test
3,000 FH / 12 Months
See Note 2
12-B-21-30-00-00A-
903A-A
21-30/463
MSN 1720-9999 -
Cabin pressurization
dump control
Operational test
600 FH / 12 Months
See Note 2
12-B-21-30-00-00A-
903B-A
21-30/464
MSN 1720-9999 -
Cabin pressurization
manual control
Operational test
600 FH / 12 Months
See Note 2
12-B-21-30-00-00A-
903B-A
21-30/465
MSN 1720-9999 -
Cabin pressurization
positive pressure re-
lief valve
Functional test
4,800 FH / 48 Months 12-B-21-30-00-00A-
903B-A
21-30/468
MSN 1720-9999 -
Cabin pressurization
altitude limiting func-
tion
Functional test
4,800 FH / 48 Months 12-B-21-30-00-00A-
903B-A
21-30/469
MSN 1720-9999 -
Cabin pressurization
high cabin altitude
warning
Functional test
4,800 FH / 48 Months 12-B-21-30-00-00A-
903B-A
24-30/311
Generator control
units, GCU 1 and
GCU 2
Functional test of the
GCU 1 and GCU 2
over and under volt-
age trip protection
(CMR)
3,000 FH / 12 Months
See Note 2
12-B-71-00-00-00A-
903D-A
27-40/1
Horizontal stabilizer
trim
Functional test of
trim runaway aural
warning system (FAA
CMR)
3,000 FH / 12 Months
See Note 2
12-B-27-40-00-00A-
903A-A
27-50/437
Inboard flap
drive arms (P/N
527.52.12.153 or P/N
527.52.12.154)
In-situ inspec-
tion/check
600 FH / 12 Months
See Note 3
12-B-27-51-00-00A-
313A-A
PC-12/47E AMM Doc No 02300, ISSUE 01 REVISION 26 MSN 545, 1001-1719,
1721-1999
12-B-AM-00-00-00-I
UNCLASSIFIED
Effectivity: All
12-B-04-00-00-00A-000A-A
UNCLASSIFIED
2021-12-04 Page 7