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corrosion, wear and distortion.
− Replace the A bolts if there is more than
0.1 mm (0.004 in) of radial play.
− Grease the A bolts.
− Examine the B-bolts and bushings for
security in surrounding composite,
tightness of fit of pin/bolt, cracks,
corrosion, wear and distortion.
− Replace the B bolts if there is more than
0.1 mm (0.004 in) of radial play.
− Grease the B-bolts.
(Refer to Chapter 12-20).
x x
6. Do a visual inspection and a tap test of the
wing roots (in front and behind the spar) to
examine the bonding with the skins.
x
DA20-C1 AMM
Time Limits and
Maintenance Checks
Doc # DA201-C1
Rev. 13 05-20-00 Page 33
30 Apr 2008
Interval (Flight Hours)
Inspection Items 50 100 200 1000 6000 Initials.
7. At the lower wing, remove the tie-down ring
to check for damage to the hole. Check for
delamination, cracks and elongation of the
hole.
x
8. Visually examine the internal ribs through
the lower wing inspection panels.
- Check for the condition of the laminate
on the ribs.
- Check for cracks and delamination
around the bellcrank brackets and a
disbond between the bracket and rib.
- Check the condition of the bellcrank
brackets. Look especially for cracks,
elongation of the bellcrank mounting
holes, corrosion and chipped paint.
x
9. Do a visual inspection and a tap test of the
trailing edge spar.
- Examine for the condition of the laminate
and bond of the trailing edge to the skin.
- Examine for the bonding of the flap and
aileron hinges to the trailing edge and
skin.
- Examine the bonding of the flap up-stop
rib to the trailing edge and skin.
x
10. Visually examine the main spar flange joint
and web, outboard from the root rib. Look
through the root rib openings. Look for signs
of damage (delamination).
x
11. Visually examine the main spar web
sandwich structure, outboard from the root
rib. Look through the root rib openings.
Look for condition of laminate, delamination,
condition of core.
x
12. Visually examine the wing roots (in front and
behind the spar) to inspect the joints with the
main spar and spar stump. Examine the
condition of the laminate. Look especially
for damage (cracks and delamination).
x
13. Visually examine the main bolt bushing in
the spar web. Look especially for corrosion
or wear of bushing, bond of bushing in spar
stump. Make sure of a tight fit of the main
pin within the bushing.
x
14. Remove the ailerons from the wings.
(Refer to Chapter 57-60).
x
Time Limits and
Maintenance Checks
DA20-C1 AMM
Page 34
30 Apr 2008 05-20-00 Doc # DA201-C1
Rev. 13
Interval (Flight Hours)
Inspection Items 50 100 200 1000 6000 Initials.
15. Visually examine the ailerons. Look
especially for damage (dents, cracks, holes
and delamination).
x x x x
16. Do a visual inspection and tap test of the
ailerons.
- Examine the paint for chips, scratches
and UV damage.
- Inspect the skin for delamination.
- Inspect for damage to the core or
disbond between the skin and the core.
- Inspect the ribs for bonding with the
skins.
x
17. Remove and replace the aileron hinge
hardware.
x
18. Examine the aileron hinges and control
horns. Check the laminate around the
hinges and the control horn fasteners for
cracks, corrosion or delamination.
Look especially for too much play.
Play allowed:
− axial: ± 1.00 mm (± 0.04 in).
− radial: ± 0.25 mm (± 0.01 in).
x x x x
19. Visually examine the drain holes in the
ailerons. Make sure that they are open.
x x x
20. Install the ailerons back on the wings.
(Refer to Chapter 57-60).
x
21. Visually examine the mass balance
attachment through the access hole on the
lower surface. Inspect for cracks in the
laminate and bonding paste around the
fasteners.
x x x x
22. Remove the flaps from the wings.
(Refer to Chapter 57-50).
x
23. Examine the flaps. Look especially for
damage (dents, cracks, holes and
delamination).
x x x x
DA20-C1 AMM
Time Limits and
Maintenance Checks
Doc # DA201-C1
Rev. 14 05-20-00 Page 35
30 Oct 2008
Interval (Flight Hours)
Inspection Items 50 100 200 1000 6000 Initials.
24. Do a visual inspection and tap test of the
flaps.
- Examine the paint for chips, scratches
　
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