Yak-55
airplane Service Bulletins
|
Bulletin No |
Contents |
Applies to a/c s/n |
|
55-14-BD |
Reinforcement
of the wing rib No 4 within the aileron attachment area
|
860103-880701 |
|
55-15-BD |
Replacement
of tail wheel fork. Elimination of the
contact between the rudder and tail wheel spring |
860103-890810 |
|
55-17-BE |
Replacement
of the bracket No.55.5100-70 with the reinforced bracket No.55.5100-180 |
860106-890801 |
|
55-18-BE |
Manuals
text clarification |
|
|
55-19-BD |
Reinforcement
of the area where tube spar attaches to the elevator structure (until 250 flight hours) |
860103-900906 |
|
55-20-BE |
Elimination
of main landing gear play. Text
clarification |
|
|
55-21-BD |
Adding
plates No.55.4100.103 and bolts No.55.0100.07 into each spares kit supplied
with previously manufactured airplanes. (Bolts to be replaced after 250
flight hours) |
860103-901010 |
|
55-22-BD |
Replacement
of engine frame upper brackets with reinforced ones. |
860103-901110 |
|
55-24-BD |
Replacement
wheel axles No.55-4100-110 with axles No.55-4100-35 after 350 landings |
860103-901005 |
|
55-25-BE |
Extending
life time upt to 500 flight hours and 2000 landings |
|
|
55-27-BD |
Reiforcement of
engine cowling by the installation of additional fixation |
860103-911206 |
|
55-29-BD |
Replacement
of elevator and rudder fabric skin after 4+/- 1 years |
860103-911210 |
|
55-30-BD |
Changing
battery contact plug |
860103-901010 |
|
55-31-BD |
Replacement
of axles No.55.4100.501 with reinforced 3 axles No.55.4100.511. Replacement
of axle attachment bolts Relacement of
bolts attaching axle No.55.4100.511 to the landing gear spring is to be
carried ot after 700 landings |
901006-911210 |
|
55-32-BE |
Adding
text to the paragraph “44.25 landing gear” of the airplane manual |
901006-911210 |
|
2-BU |
Replacement
of the tail wheel spring No.55.4700.10SB with the reinforced spring
No.55.4700-20SB |
860103-911210 |
Chief of department VA Kirillov
Chief of department VV Levitsky
Project engineer
VB Loiko