Service Bulletin 653-47/2
Scheibe SF-25C Falke 2000 · Service Bulletins
Overview
This service bulletin addresses modifications required for the control stick bearings in specific models of the Scheibe SF-25C Falke motorglider. It outlines the urgency of the modifications, the affected serial numbers, and the necessary actions to ensure safety and compliance.
- Modifications are required for SF 25 C, E, and K models.
- Urgent action is needed before the next flight if specific bearings are found.
- Spheric slide bearings GE 8 E wear out quickly and are no longer available.
- The complete control column must be modified if bearings need replacement.
- Only authorized personnel should perform the modifications.
- The modification must be certified in the log book.
- The service bulletin was approved by the German LBA.
- The original document was written in German.
Document
Source
Originally published by website-editor.net. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type ·
- Service Bulletins
- Year ·
- 2000
- File size ·
- 150 KB
- Publisher ·
- website-editor.net
- Language ·
- de
What is the Service Bulletin 653-47/2?
The Service Bulletin 653-47/2 is a service bulletins for the Scheibe SF-25C Falke 2000, dated 2000.
Where does the Service Bulletin 653-47/2 come from?
This copy of the Service Bulletin 653-47/2 was originally published by website-editor.net and is hosted on Sprinkle as a free, searchable reference copy.
What year was the Service Bulletin 653-47/2 published?
The Service Bulletin 653-47/2 — the Scheibe SF-25C Falke 2000 service bulletins on file — is dated 2000.
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In this document
Subject
Bearings in the control stick for specific SF 25 models.
Affected Models
SF 25 C, E, and K models with specified serial numbers.
Urgency
Modifications must be done before the next flight if certain bearings are present or worn out.
Actions Required
Welding new slide bearing supports and replacing specific parts as per the modification instructions.
Material Needed
Specific bearing supports and bearings are required for the modification.
Remarks
Modifications must be performed by authorized personnel and certified.
Safety notes
- Modification must be performed only by the manufacturer or authorized organizations.
- The modification must be certified in the log book by an authorized inspector.
Full document text
Scheibe- Flugzeugbau GmbH August- Pfaltz- Str. 23 85221 Dachau LBA- Anerkennung I- EB 2 Service Bulletin 653-47/ 2 SF 25C: Modification 86, 109 SF 25 E: Modification 38, 42 SF 25 K: Modification 1 TCDS-N° 653 Page 1 of 2 653-47/2.DOC Subject: Bearings in the control stick Affected: SF 25 C „Falke“, Serial-N°: 4356C, 44148, 44161, 44162, 44165, 44167, 44168, 44170 – 44172, 44175, 44176, 44179 – 44354 SF 25 E „Super-Falke“, Serial-N°: 4323 – 4362 SF 25 K „Falke“, Serial-N°: 4902 – 4906 The different models and serial numbers of SF 25 motorgliders listed above are equipped with longitudinal and lateral control system consisting of two separate sticks. SF 25 with the older “fork” control stick are not affected. Urgency: a) Before the next flight, if a double-row self aligning ball bearing 14 C 6 is to be found in the control column parts 2, 3, 7 and/or 14 (see below sketch) or b) when the spheric slide bearings GE 8 E installed in accordance with TM 653-47 are worn out and must be replaced. Reason: The spheric slide bearings GE 8 E according to TM 653-47 wear out very soon and are no longer obtainable. If these spheric slide bearings must be replaced, the complete control column (Parts 2, 3, 7 and 14 according to 653E-41-S10 and part 32 according to 653E-41-S10E1) must be modified according to 653E-41-S10 change d. Actions: New slide bearing supports must be welded to the parts 2, 3, 7 und 14 (see below sketch) according to 653E-41-S10 change d and 653E-41-S10E1. The old Part 33 of 653E-41-S10 located between part 2 and 7 is to be replaced by the new part 32 according to 653E-41-S10E1. With the exception of the spheric ball bearing 14 C 8 at part 2 of 653-41-S10E1 all the other bearings are spheric slide bearings (1x SSCP 8 IH und 2x SSCP 6 IH). All the slide bearings are fixed with Loctite 270. Apply 2 new chime rings at each bearing. Replace the additional 4 ball bearings 626 ZZ at part 2 of 653E-41-S10. part 14 part 3 part 2 part 7 2 ball bearings 626ZZ This connections must be detached Scheibe- Flugzeugbau GmbH August- Pfaltz- Str. 23 85221 Dachau LBA- Anerkennung I- EB 2 Service Bulletin 653-47/ 2 SF 25C: Modification 86, 109 SF 25 E: Modification 38, 42 SF 25 K: Modification 1 TCDS-N° 653 Page 2 of 2 653-47/2.DOC Material: 2x bearing supports (part 35 of 653E-41-S10 change d) and 1x bearing support (part 6 of 653E-41-S10 change d) and 1x bearing support (part 2 of 653E-41-S10E1) Spheric slide bearing 1x SSCP 8 IH with 2x chime rings and 2x SSCP 6 IH with 2x chime rings Spheric ball bearings 1x 14C8 with 2x chime rings Ball bearing 4x 626 ZZ Weight and Balance: --- Remarks: The modification has to be performed only by the manufacturer SCHEIBE Flugzeugbau GmbH or by a maintenance organisation, authorized by the manufacturer or a service station, approved in accordance with JAR 145. The modification has to be certified in the log book by an authorized inspector. SCHEIBE Flugzeugbau GmbH Musterprüfleitstelle LBA- approved: Dachau, 02/22/2000 LBA I- EB 2 (Haferkorn) This service bulletin was originally written in German and is approved by the German LBA. The translation has been accomplished to best of our knowledge and judgement. In case of doubt, the German original is authoritative.