# Fiberglas-Technik Service Bulletin SB-G05: No revision named

- Rights: © Fiberglas-Technik. Filed by the FAA in regulations.gov docket FAA-2014-0292; AD 2014-15-02, 2014-15-02 R1 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.
- Document: [Fiberglas-Technik Service Bulletin SB-G05](https://openairdocs.org/service-documents/fiberglas-technik/sb-g05.md)
- Title as filed: Fiberglas-Technik Rudolf Lindner Service Bulletin TM-G05SB-G05, dated January 17, 2014
- Pages: 1
- PDF: https://openairdocs.org/files/sha256/67/4f/674fbcbae31575204ea5030aa7499c223ba60db9d40eb176d032ee6fd193b7fb
- Page: https://openairdocs.org/service-documents/fiberglas-technik/sb-g05/file/674fbcbae315

## Text

Each page's text from the PDF; open the PDF at a page with #page=N.

### Page 1

Prepared:   Verified: Complies: 
   
 
Fiberglas-Technik Service Bulletin (SB-G05) Grob Page 1 of 1 
Rudolf Lindner „Control cable pulleys 42 mm“ Sailplanes  
EASA AP.161  EASA.A.250 Edition 17.01.2014 
 
Subject: Exchange of the control cable pulleys diameter 42 mm  
Effectivity: Grob Sailplanes (data sheet TCDS EASA.A.250) 
GROB G 103 TWIN II  Serial no. 3501 – 3729 (*) 
    Serial no. 3730 – 3878 
    Serial no. 33879 – 34078 
GROB G 103A TWIN II ACRO Serial no. 3544 – 3729 (with letter „K“) (*) 
    Serial no. 3730 – 3878 (with letter „K“) 
    Serial no. 33879 – 34078 (with letter „K“) 
GROB G 103C TWIN III ACRO Serial no. 34101 – 34203 (**) 
GROB G 103C TWIN III Serial no. 36001 – 36014 (**) 
GROB G 103SL Twin III SL Serial no. 35002 – 35051 (**) 
GROB G 102 Standard Astir III Serial no. 5502 – 5652 (with letter „S“) 
GROB G 102 Club Astir III Serial no. 5501 – 5652 (with letter „C“) 
GROB G 102 Club Astir IIIb Serial no. 5501 – 5652 (with letter „Cb“)  
(*) Serial numbers of „Twin II“ and „Twin II Acro“ below 3730 are not affected 
regarding the pulleys in the pedal units.  
(**) All „Twin III“, „Twin III Acro“ and „Twin III SL“ have closed cable cages in the 
pedal units and regarding other time limits.  
Priority: Replacement of the plastic control cable pulleys with 42 mm diameter has to be 
accomplished 
• in case of open cable cages until 31.03.2014 
• in case of closed cable cages until 31.05.2014 
Replacement of the plastic control cable pulleys with 42 mm diameter in the cable 
circuits of the pedal adjustment / tow hook controls is optional – no time limit.  
Reason: “Instructions for the replacement of the control cable pulleys 42 mm (A/I-G05)” are 
provided. 
The control cable pulleys in the rudder pedal units of models „Twin II“ and „Twin II 
Acro“ starting at serial no. 3730 and models „Twin III“, „Twin III Acro” and “Twin III 
SL“ (always for the front seat), and also models „ Standard Astir III“, „Club Astir III“ 
and „Club Astir III b“ made fromplastic materials have been installed partly in the 
above mentioned models. 
Because these pulley may break thereby reducing the controllability of the 
sailplane, such pulleys need to be replaced against pulleys made from Aluminum. 
Such Aluminum pulleys have been partly already installed during production or 
during maintenance. 
Also eventually installed plastic pulleys with 42 mm diameter in the cable controls 
of the pedal adjustment / tow hook controls may be also replaced if needed or 
need replacement when damaged.  
Instructions and 
material: 
 
The “Instructions for the replacement of the control cable pulleys 42 mm (A/I-G05)” 
have to be added to the technical documentation of the sailplane / motor-glider as 
supplement.  
Those instructions have to be followed during the installation process. 
The required materials may be ordered at Fiberglas-Technik R.Lindner GmbH & 
Co.KG.  
Weight and Balance: The change of weight and balance due to the described change is negligible.  
Remarks: The aircraft owner may add the instructions into the maintenance manual.  
The correct execution of all further instructions and of the installation has to be 
signed by approved certifying staff personnel in the aircraft logs.  
EASA-approved: EASA-approved on 24.01.2014 under No. 10047863

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