Maintenance Manual LS8
Issued: December 2009
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
Manual valid with the up-to-date cover page only
3-4
12. Check canopy locking and emergency release function
:
Measure force required to open canopy emergency release according to
following steps (If this measurement or an operational check is
performed without a helper, the spring at the rear end temporary hinge
bolt becomes deformed and must be exchanged):
(a) "pilot" in seat with spring gauge.
(b) both canopy locking levers opened.
(c) Helper at front canopy end to avoid lifting of canopy by gas spring.
(d) Force required to open right side emergency release
max. 15 kg <33 lbs>.
(e) After force measurement, the pilot pushes the rear end of the canopy
up to disengage the LS-latch (Röger hook)
from the spring at the
fuselage and lifts the canopy at the opening handles, the helper
holds the front end on the opener. With canopy fully open, the
helper pushes the connecting pin upward and engages canopy to
opener by turning driving lug anti-clockwise.
When emergency release force is too high, grease all moving parts,
contact DG Flugzeugbau if necessary.
13. Check function of LS-latch (Röger hook) for canopy emergency
release
Measure force required to lift canopy rear edge free from spring:
Reference value 8 to 15 kg <18 to 33 lbs>
If force required is considerably lower, the spring must be exchanged to
ensure proper functioning of canopy jettison.
14. Empty mass C.G. should be recalculated (see chapter 2):
a. when equipment is different compared to valid equipment list, file
new equipment list
b. with equipment unaltered, every four years.
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