# Diamond Aircraft Service Bulletin 42NG-081: Revision 2 - Rights: © Diamond Aircraft. Filed by the FAA in regulations.gov docket FAA-2023-2143; AD 2024-06-13 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Diamond Aircraft Service Bulletin 42NG-081](https://openairdocs.org/service-documents/diamond/42ng-081.md) - Title as filed: Diamond Recommended SB 42-139 and RSB 42NG-081 published with WI-RSB 42-139 and WI-RSB 42NG-081 Rev 2 - Pages: 13 - PDF: https://openairdocs.org/files/sha256/07/ea/07ea0aa4c39407876a79648ccebdbf77e6e6abbcfd5d1d14085a9b0c933ce394 - Page: https://openairdocs.org/service-documents/diamond/42ng-081/file/07ea0aa4c394 ## Text This text is OCR from a scan. OCR can misread letters and numbers. Each page's text from the PDF; open the PDF at a page with #page=N. ### Page 1 (No text on this page.) ### Page 2 (No text on this page.) ### Page 3 (No text on this page.) ### Page 4 (No text on this page.) ### Page 5 (No text on this page.) ### Page 6 (No text on this page.) ### Page 7 (No text on this page.) ### Page 8 (OCR) Diamond Diamond Aircraft Industries GmbH WI-RSB 42-139 AIRCRAFT Nikolaus-August-Otto-Straße 5 WI-RSB 42NG-081 2700 Wiener Neustadt, Austria Revision 2 Page 4 of 9 15-Nov-2022 Check the clearances while moving the rudder in both directions, • between end of T-yoke bolts for copilot's right rudder cable & pilot's left rudder cable and nose landing gear (NG) steering rod (continuous circle in figure 5) • and between head of T-yoke bolts for copilot's right rudder cable & pilot's left rudder cable and mounting bracket (dashed circle in figure 5). Record the measured clearances. Each clearance must be greater than 2 mm (0.08 in). Figures 2 - 5 show the affected area. 5. figure 2 figure 3 figure 4 figure 5 Disconnect the NG steering linkage at the NG steering cardan in the wheel well. Release rudder cable turnbuckles. Remove self-locking nut of T-yoke bolt: • block the self-locking nut with a wrench, • turn the T-yoke bolt until the self-locking nut falls off, • remove washer and self-locking nut from the airplane, • discard the self-locking nut. Remove T-yoke bolt from the rudder steering bracket. ### Page 9 (No text on this page.) ### Page 10 (OCR) Diamond Diamond Aircraft Industries GmbH WI-RSB 42-139 AIRCRAFT Nikolaus-August-Otto-Straße 5 WI-RSB 42NG-081 2700 Wiener Neustadt, Austria Revision 2 Page 6 of 9 15-Nov-2022 Install the T-yoke with (refer to figure 7) the new T-yoke bolt D60-5320-00-32, a DIN 125 washer between mounting bracket and T-yoke, required washers depending on Variant 1, Variant 2 or Variant 3 - Variant 1: DIN 125 washer between the T-yoke and the rudder steering bracket, - Variant 2: DIN 988 shim between the T-yoke and well bonded oblong hole washer, - Variant 3: no washer between the T-yoke and well bonded oblong hole washer. • a DIN 9021 washer between the self-locking nut and the rudder steering bracket, • Feet Needle AN a Fokker Needle AN416-1 perpendicular to the flight direction. T-yoke bolt Lightning protection strap Mounting bracket Washer 14. DIN 125 T-Yoke Variant 2 Variant 3 Shim DIN 988 Variant 1 Oblong hole washer Oblong hole washer D60-5320-00-31_01 Washer DIN 125 D60-5320-00-31 bonded to rudder steering bracket bonded to rudder steering bracket Rudder steering bracket Washer DIN 9021 Self-locking nut Fokker Needle figure 7 ### Page 11 (No text on this page.) ### Page 12 (OCR) Diamond Diamond Aircraft Industries GmbH WI-RSB 42-139 AIRCRAFT Nikolaus-August-Otto-Straße 5 WI-RSB 42NG-081 2700 Wiener Neustadt, Austria Revision 2 Page 8 of 9 15-Nov-2022 If any of the clearances is not greater than 2mm (0.08 in), reposition the T-yoke in 17. accordance with Work Instruction of MSB 42-087 / MSB 42NG-016, Section III.3, latest effective issue. Mark the head of the T-yoke bolt with at least two torque seal marks (refer to figure 9). Mark the self-locking nut with a torque seal mark (refer to figure 10). 18. figure 9 figure 10 Adjust left and right rudder cable turnbuckles to give the correct tension to the control 19. cables in accordance with AMM, Section 27-20. Install the two heating hoses to the Y-connector in accordance with 20. AMM, Section 21-20. 21. Connect the short aileron push rod to the idler lever at the main spar. 22. Connect the NG steering linkage to the NG steering cardan in the wheel well. 23. Do an inspection of all controls that have been adjusted. If required by the National Authority, do a duplicate inspection of the controls. 24. Install the passenger seat in accordance with AMM, Section 25-10. 25. Install the middle tunnel front cover. 26. Install the pilot and copilot seat in accordance with AMM, Section 25-10. 27. Clean working area and check for foreign objects. 28. Perform functional check of altered, repaired and new parts. 29. Test all systems in working area for function. 30 Make necessary entries into aircraft logs. ### Page 13 (No text on this page.) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.