Maintenance Manual STEMME S10-VT
Date of Issue: Jan. 01, 1998
Page 7-3
Amendment Nr. 0
Date:--
A4011121_B23.doc
Doc. No. A40-11-121
7.1.2.4 Centre fuselage
Check the steel frame for damages. Repair damage of the paint and remove corrosion. If damages from
chafing have occurred, determine and eliminate the cause of chafing.
Check parts of the frame near to the force transmitting fittings (forward fuselage, tail boom, wings, landing
gear), specially the welding seams, for cracks.
Check the screw connections of forward fuselage and tail boom to steel frame for tight connection. Check
condition of tailboom composite structure close to the force transmission points. Check condition of upper
and lower attachment points framework / front fuselage. Check condition of force transmission points in the
front fuselage composite structure (cracks) and bonding of upper shear sleeves for tight fit.
Tightening Torques
see section 6.8
7.1.3 Empennage
Description
See section 3.1.3
Lubrication:
See section 6.5
7.1.3.1 Condition General
Check surface of vertical and horizontal tail (fins and stabiliser/rudder) for abnormal condition or cracks,
specially near to force transmission points (fittings, control links, hinges). Check condition and attachment of
gap sealing / zigzag tape.
See section 6.6 and refer to Annex A: "Minor repair to components of fibrous composite material".
7.1.3.2 Vertical tail
Rudder Attachment and Free Movement:
Check condition of rudder fittings (stainless steel), specially check lower fitting for cracks and deformation.
Check tight fit of screw connections and rivet connection of bearings, friction in bearings (observe section 6.5
"Lubrication") and backlash. The axial backlash of the rudder should be minimum (washer D125-08 must be
installed between lower bearing and lower hinge bolt). Check condition of split pin. Move rudder to left and
right stops to check for unobstructed movement. Specially the tail wheel coupling must not obstruct rudder
deflections if the tail wheel steering is blocked.
Antenna:
Check condition of plug contact and protection coating (shrink hose). Check fixing at lower rudder fitting
(cable support). Check free movement of rudder without the coaxial-cable obstructing rudder control cables
and coupling rods to tail wheel.
Support of Additional Battery in Vertical Tail Fin (optional)
Check condition of composite battery-box, bonding of box to upper rib, drainage hole in box and condition of
foam rubber support. Check condition and tight fit of cable connections.
Check if the Equipment List and Weight and Balance Report correspond with the a/c with regard to the
additional battery.
WARNING:
The additional battery has a major effect on the aircraft CG. The Equipment List and the Weight
and Balance Report must correspond with the a/c with regard to the additional battery, otherwise
the airworthiness expires due to an undocumented CG. Installation or removal of the additional
battery requires correction of the Equipment List and an update of the Weight and Balance
Report before return to service.
