Vulcanair S.p.A.
Service Bulletin No. VA-03 Rev.1
First issue dated 09 October 2017
Rev.1 dated 08 January 2019
Page
13
of
19
101.
Referring to DWG R.0550, route the Bowden cable through the existing cut-out on the fuselage
frame No.3 up to the stringer between the fuselage frames No.2 and 3.
102.
Fix the Bowden cable to the LH stringer between the fuselage frames No.2 and 3 at the hole
previously drilled, using the clamp p/n MS21919WDG5, the spacer p/n 2.2539-5, the bolt p/n
AN3-6A, the washer p/n NAS1149F0332P and the nut p/n MS21083N3.
103.
Fix the Bowden cable to the concerned bracket on the fuselage frame No.2 using the clamp p/n
MS21919WDG5, the spacer p/n 2.2539-6 and the bolt p/n AN3-12A.
104.
Referring to DWG R.0550, route the Bowden cable through the lightning holes of the fuselage
frames No.2 and 1.
105.
Route the Bowden cable through the LH side of the fuselage up to the bracket previously
installed on the fuselage frame No.1.
106.
Fix the Bowden cable to the concerned bracket on the fuselage frame No.1 using the clamp p/n
MS21919WDG5, the spacer p/n 2.2539-6 and the bolt p/n AN3-12A.
107.
Fit the Bowden inner solid wire in the special bolt hole of Bowden Support Welded Assy p/n
8393-407 (item 26) previously installed to the fuselage truss near the pilot entrance door. Trim
the Bowden external sleeve as required. Pull the Bowden inner solid wire up to the lever assy.
108.
Put in place the Tow Release p/n NV7.003-247A (item 19) on the Hook Support Welded Assy
p/n 8393-403 (item 2), let the Bowden inner solid wire passing in the pulley groove, and install
the Bowden cable eye-end terminal to the concerning lever, of Tow Release p/n NV7.003-
247A, using the bolt p/n AN3-5A, the washer p/n NAS1149F0332P and the nut p/n MS21042-
3. Torque the nut to [0.48÷0.52] kgm. Keep the Tow Release lever in neutral position.
109.
Referring to DWG R.0550, install the Tow Release p/n NV7.003-247A (item 19) to the Hook
Support Welded Assy p/n 8393-403 (item 2) using the bolt p/n AN4-14A, the washer p/n
NAS1149F0432P and the nut p/n MS21083N4. Torque the nuts to [0.86÷0.94] kgm.
110.
Install definitively the Hook Support Welded Assy p/n 8393-403 (item 2) to the Tow Hook
Glider Welded Assembly (item 1) by tightening the turnbuckle (item 10) connecting aft and fwd
cables to 45.36±1.80 kg (100±4 lb) of tension, then install securing clips p/n MS21256-1.
NOTE
Ensure that the aft cable is in the pulley groove.
111.
Referring to DWG R.0550, put the cabin lever in the neutral position.
112.
Referring to DWG R.0550, fit the special bolt p/n 5429-019 (item 29) in the lever assy and then
install the nut p/n AN316-3R, and washer p/n NAS1149F0332P; fit the Bowden inner solid wire
in the special bolt and then complete the installation with the washer p/n NAS1149F0332P and
the nut p/n MS21083N3. Torque the nut to [0.48÷0.52] kgm. Bend the Bowden inner solid wire
and trim, as required, during the installation.
113.
On workbench, cut out the floor panel p/n 5750-001 in accordance with DWG R.0555.
114.
Apply reference red marks on all the couplings.
115.
Reinstall the access panel at the bottom side of fuselage rear cone.
