Maintenance Manual STEMME S10-VT
Date of Issue: Jan. 01, 1998
Page 7-4
Amendment Nr. 0
Date:--
A4011121_B23.doc
Doc. No. A40-11-121
7.1.3.3 Horizontal tail
Check forward fitting for cracks and corrosion, tight fit of screw connection, smooth operation of spring bolt
(observe section 6.5 "Lubrication"), backlash of bolt and sufficient spring tension for safe locking. Check
rearward fitting for cracks, specially close to welding seams and the cut-outs of the fixing plates, tight fit of
screw connection and wear of pins. Check nut of the assembly screw stop.
Check backlash of the horizontal tail fitting:
•
move horizontal tail tip forward and aft and up and down
•
take hold of the mid section of the horizontal tail fin, push up and down
If excessive backlash is found, the bolts and fittings must be measured.
Maximum Backlash of Horizontal Tail Fittings:
forward fitting:
vertically 0.15 mm / 0.006 in.
horizontally 0.1 mm / 0.004 in.
rear fitting
vertically 0.15 mm / 0.006 in.
horizontally 0.15 mm / 0.006 in.
7.1.3.4 Masses and Static Hinge Moments of Control Surfaces
Upon repair and re-painting the control surfaces masses and static hinge moments must be measured. If the
limits are exceeded, contact the manufacturer.
Masses and Hinge Moments
see section 6.4.2
Deflections
:
see section 6.4.1
