LBA
AD-No.: |
TN-No.:
|
Subject |
Urgency |
Download |
| |
401-1 |
Hard core
foam in wing instead of balsa wood SN 28 and up |
|
 |
 |
| |
401-2 |
Airbrakes
on lower wing surface omitted, brakes on upper wing surface enlarged,
SN 25 and up |
|
|
|
| |
401-3 |
Aileron construction
without balsa wood SN 33 and up |
|
|
|
| |
401-4 |
Improved canopy lock SN
22, 23, 24 and 25 |
|
|
|
| |
401-5 |
Tilt-up canopy (center
section) with bolt-on GFRP aft section Standard on SN 26 and up |
|
|
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| |
401-6 |
Installation of wing
fuselage fillets Standard on SN 26 and up |
|
|
|
| |
401-7 |
Installation of aileron/flap
superimposing linkage Standard on SN 26 and up |
|
|
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| |
401-8 |
Improved airfoil
section for horizontal tailplane, anti-flettner tab, trim spring
Standard on SN 28 and up |
|
|
|
| |
401-9 |
Hard core foam instead
of balsa wood, Standard on SN 28 and up |
|
|
|
| 74-323/2 |
401-10 |
Inspection of rudder
cabbIes in the area of the S-shaped guides on the rudder pedals,
replacement if damage is discovered, all SN |
every
100 h / annually |
|
|
| |
401-11/2 |
Anti collision markings
- various colour Supersedes TN No. 401-11, all SN |
01.07.71 |
|
|
| |
401-12 |
Different glass cloth
for shear web: See drawing No. 401-52-5, Note 1 for alterations |
|
|
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| |
401-13 |
Different glass cloth
for shear web: See drawing No. 401-52-5, Note 1 for alterations |
|
|
|
| |
401-14 |
Reinforced spar stubs
and reinforced stub fittings, Standard on SN 101 and up |
|
|
|
| |
401-15 |
Modification of the
torque tube actuating the airbrakes: Standard on SN 96 and up |
|
|
|
| 79-233 |
401-16 |
Airbrake actuating
system inside the wing: Replacementof the rod ends and control for
cracks |
Until
15.6.1979, annually |
|
|
| 81-266 |
401-17 |
Increase of the service
life limit to 6000 h All SN |
Prior to
reaching 3000 h, at latest 31.03.1982 |
|
|
| 84-11 |
401-18 |
Possible damage of wing
structure with water ballast bags installed. Revision of flight
manual. |
latest 01.05.84 |
|
|
| |
401-19 |
Rudder-yoke Replacement
of the yoke |
latest 31.03.87 |
|
|
| 87-83 |
401-20 |
Replacement of „DIN“
control cables by „LN“ cables |
until
31.07.1987, every 500h |
|
|
| |
401-21 |
Elevator drive bracket:
Possibility of replacement by elevator drive bracket acc. to drawing
No. 201-33-4 |
|
|
|
| |
401-22 |
Tow releases: Optional
use of model E85 instead of E72/E75 |
|
|
|
| |
401-23 |
Modification to
single-piece tilt-up canopy by Glasfaser-Fluggzeug- Service |
|
|
|
| 96-133 |
401-24 |
Inspection of glass
fiber laminate on spar stub fitting |
annually |
|
|
| 96-139 |
401-25 |
Control surface weight
and static balance |
until
31.03.1996 |
|
|
| 02-051 |
401-26 |
Possible cracks on
airbrakes actuation shaft |
until
31.03.2002, annually |
|
|
| |
401-27 |
Replacement of airbrake
drive gear inside wing, optional |
|
|
|
| |
401-28 |
Extension of service
life limit to 12000 hours All SN |
latest
31.03.2006/ when reaching 6000 h |
|
|
| |
401-28 |
manual |
|
|
|
| |
401-29 |
Installation of
Mode-S-Transponder and Transponder Antennas |
|
|
|
EASA AD
2011-213 |
401-30 |
Inspection
/ replacement of elevator control rod in vertical fin |
30 Days /
latest 31.12.2012 |
|
|
| |
401-30 |
Authorised
service facilities for TN 401-30 |
|
|
|
| 2018-0143-E |
5-2018 |
Deflector-angles at the C.G. release
Usage of connection ring pair meeting
LN 65091 |
annually |
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