Vulcanair S.p.A.
Service Bulletin No. VA-03 Rev.1
First issue dated 09 October 2017
Rev.1 dated 08 January 2019
Page
6
of
19
4.
Referring to DWG R.0550, fit the Bowden Support Welded p/n 8393-407 (item 26) to the
fuselage truss.
5.
Fix the position of the Bowden Support Welded p/n 8393-407 on the fuselage truss as per
instructions within DWGR.0550, and tight by using bolt p/n AN4-12A, washer p/n
NAS1149F0432P and nut p/n MS21083N4. Torque the nuts to [0.86÷0.94] kgm.
6.
Get access to the LH side of fuselage lower frame No.1 (ref. p/n 5186-001) of the internal
fuselage rear section, and put in place the bracket p/n NOR7.077-1 (item 41) as per instructions
within DWG R.0550.
7.
Copy the holes from the bracket to the fuselage frame and then drill to Ø3.2mm diameter holes.
8.
Deburr all the holes and clean all reworked surfaces with Methyl-Ethyl-Ketone or equivalent
cleaning solvent; treat them with Alodine 1200 (MIL-C-5541) and then with Epoxy Primer
(MIL-PRF-23377).
9.
Install the bracket p/n NOR7.077-1 to the fuselage lower frame No.1 by using blind rivets p/n
1661-0410.
10.
Get access to the LH rear side of fuselage frame No.2 (ref. p/n 5177-001) of the internal
fuselage rear section, and put in place the bracket p/n NOR7.077-1 (item 41) as per instructions
within DWG R.0550.
11.
Copy the holes from the bracket to the fuselage frame No.2 and then drill to Ø3.2mm diameter
holes.
12.
Deburr all the holes and clean all reworked surfaces with Methyl-Ethyl-Ketone or equivalent
cleaning solvent; treat them with Alodine 1200 (MIL-C-5541) and then with Epoxy Primer
(MIL-PRF-23377).
13.
Install the bracket p/n NOR7.077-1 to the fuselage frame No.2 by using blind rivets p/n 1661-
0410.
14.
Get access to the LH fuselage stringer (ref. p/n 5198-005), between fuselage frames No.2 and 3
of the internal fuselage rear section, and drill the stringer to Ø4.83mm diameter hole, as per
instructions within DWG R.0550.
15.
Deburr the hole and clean the reworked surfaces with Methyl-Ethyl-Ketone or equivalent
cleaning solvent; treat them with Alodine 1200 (MIL-C-5541) and then with Epoxy Primer
(MIL-PRF-23377).
16.
Get access to the LH fuselage stringer (ref. p/n 5204-001), between fuselage frames No.3 and 4
of the internal fuselage rear section, and drill the stringer to Ø4.83mm diameter hole, as per
instructions within DWG R.0550.
17.
Deburr the hole and clean the reworked surfaces with Methyl-Ethyl-Ketone or equivalent
cleaning solvent; treat them with Alodine 1200 (MIL-C-5541) and then with Epoxy Primer
(MIL-PRF-23377).
18.
Get access to the LH side of fuselage frame No.4 (ref. p/n 5181-001) of the internal fuselage
rear section, and put in place the bracket p/n NOR7.077-1 (item 41) as per instructions within
DWG R.0550.
19.
Copy the holes from the bracket to the fuselage frame and then drill to Ø3.2mm diameter holes.
