DG Flugzeugbau DG-800A, Maintenance Manual

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Maintenance Manual DG-808C
Issued: June 2005 2.3
2.3 Inspections after a heavy landing
The whole aircraft
Check that the tailplane is still properly aligned in the vertical and
horizontal axis. Check the wing oscillating frequency with respect to
previous checks.
Wings
Check the wing pins and bushes for any deformation - are there any white
areas around the bushes?
Root ribs
Are there any cracks at the rib/wing skin joint or rib/spar joint? If so,
remove any paint or filler to see if the crack continues into the structure.
Any white areas around the bushes?
Outer skins
Crushing, cracks, delaminations?
Note: Hairline cracks from the edges of the airbrake housing are harmless.
Hairline cracks on the wing leading edge running along the span are harmless, if
these don't enlarge when you press on the wing shells.
Flaperons
Crushing, cracks, delaminations?
Hinge mounts checked? - Control circuit drives checked?
Fuselage
Fuselage wing connection:
White areas, increased free play, bent lift pin tubes, difficult assembly?
Torsion check:
Hold the fuselage fixed and from the top of the fin try to turn the fin around
the fuselage. Does the fuselage show any excessive deformation?
Are any cracks made visible while applying this torsion?