3
Inspect the Carry-Through Frames
Note
The following inspections require levelling or angular measurements to a high tolerance. A typical digital
inclinometer is not accurate for some of the following inspections; use an accurate laser levelling system.
Note
The following procedures do not check the alignment of the whole fuselage (notably the engine mounts or
empennage) with the centre fuselage.
3.1 Aircraft Setup
3.1.
1
Support the fuselage using the Frame 21 hard points and the rear fuselage hard points.
3.1.
2
Remove the LH wing, refer to AMM 12-B-57-00-00-00A-520A-A or 12-B-57-00-00-00A-520B-A .
3.1.
3
Remove the RH wing, refer to AMM 12-B-57-00-00-00B-520A-A or 12-B-57-00-00-00B-520B-A .
3.1.
4
Remove the loose lug bushes.
3.1.
5
Clean the lugs of any dirt or other material that may damage the lug bores.
3.1.
6
Check the loose and bonded bushes for any signs of damage.
3.1.
7
Replace damaged bushes, refer to AMM 12-B-57-00-00-00A-313A-A.
3.2 Fuselage Levelling
3.2.
1
Level the aircraft longitudinally, refer to AMM 12-B-05-50-06-00A-282A-A.
3.2.
2
Level the aircraft laterally, using Frame 21 upper surface, refer to AMM 12-B-05-50-06-00A-282A-A.
3.2.
3
Check the level of Frame 24 upper surface. This must be parallel to Frame 21, within ±0.1 degree.
3.3 Interface Geometry
Install the LH and RH Jig Assemblies to the aircraft as follows:
Note
Three persons are needed for this procedure - two to support the weight of each jig, while the third person
inserts the pins (alternatively, a hoist could be used to support the weight of the jig).
3.3.
1
Install all the lug bushes removed at Step 3.1.4.
3.3.
2
Install the Bush - Lug C5 (Pt.No. 6107806-13) Figure 1 [1] into position on the Jig Assembly LH Figure 1 [3],
upper aft lug Figure 1 [2],orientated as shown: all other jig lugs have bushes permanently fitted.
3.3.
3
Install the Bush - Lug C5 (Pt.No. 6107806-13) Figure 1 [1] into position on the Jig Assembly RH Figure 1 [5],
upper aft lug Figure 1 [4], orientated as shown: all other jig lugs have bushes permanently fitted.
3.3.
4
Install the Jig Assembly LH Figure 2 [7] onto the LH fuselage lugs as follows:
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-05-50-07-00A-282A-A
UNCLASSIFIED
19.11.2019 Page 4