# Dassault Service Bulletin F900-480: Revision 1 - Rights: © Dassault Aviation. Filed by the FAA in regulations.gov docket FAA-2020-0777, the docket of AD 2020-17-12. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Dassault Service Bulletin F900-480](https://openairdocs.org/service-documents/dassault/f900-480.md) - Title as filed: SB F900-480 R1 - Pages: 12 - PDF: https://openairdocs.org/files/sha256/3d/b0/3db0d989b11f9b18c9d1cc7d37967ceb36454b439b0102eeb35b8f78ea291d27 - Page: https://openairdocs.org/service-documents/dassault/f900-480/file/3db0d989b11f ## Text Each page's text from the PDF; open the PDF at a page with #page=N. ### Page 1 FALCON 900 No 480-R1 JULY 22, 2020 MANDATORY ATA 25-37 EQUIPMENT /FURNISHINGS PILOT SEATS REPLACEMENT OF PILOT SEAT BELT NUTS FALCON SERVICE BULLETIN Copyright © 2020 by Dassault Aviation All rights reserved. No part of this work may be reproduced or copied in any form or by any means without written permission of Dassault Aviation. 447 ### Page 2 EQUIPMENT /FURNISHINGS PILOT SEATS REPLACEMENT OF PILOT SEAT BELT NUTS Initial issuance July 09, 2020 List of effective pages : 1 to 4 Revision 1 July 22, 2020 List of effective pages : 1 to 4 REASON: Modification of the kit. FALCON 900 F900 -480 F900 -25-37 ### Page 3 EQUIPMENT /FURNISHINGS PILOT SEATS REPLACEMENT OF PILOT SEAT BELT NUTS 1. PLANNING INFORMATION A. EFFECTIVITY This Service Bulletin is applicable to FALCON 900 aircraft with serial numbers 1 thru 202 that are equipped with pilot and/or copilot seats with P/N 142 series. B. REASON On some aircraft in -service, the nut that attaches the pilot/copilot lap belt attaching points was found loose or missing. This situation can cause the belt attaching points to detach. The purpose of this Service Bulletin is to replace all nuts of the belt attaching points on the pilot/copilot seats. C. DESCRIPTION The operation consists in replacing the belt attaching points nuts. D. COMPLIANCE Mandatory as prescribed by the Airworthiness Authorities of the country of registration of the aircraft. E. APPROVAL The technical content of this document is approved under the authority of DOA ref. EASA.21J.051. F. LABOR Estimated labor-hours: Refer to Service Bulletin Commercial Summary. NOTE: These labor-hours only concern the work described in this Service Bulletin and do not include other maintenance work that may be performed on this occasion. G. MATERIAL - PRICE AND AVAILABILITY The modification kit may be obtained from either address listed below: Western hemisphere: DASSAULT FALCON JET CORP. SPARES DISTRIBUTION CENTER 200 RISER ROAD LITTLE FERRY, NJ 07643 U.S.A. Telephone: • CANADA and U.S.A.: 1-800-800-4036 • MEXICO: 001-800-800-4036 • Other countries: 1-201-541-4809 Email to: Customer.Care@Falconjet.com FALCON 900 F900 -480 July 22, 2020 F900 -25-37 Revision 1 Page 1 / 4 DASSAULT AVIATION Proprietary Data ### Page 4 Other continents: DASSAULT AVIATION Falcon Spares 54, AVENUE MARCEL DASSAULT B.P. 24 33701 MERIGNAC Cedex (FRANCE) Telephone: 33 (0)5.56.18.44.44 Email to: dafsorders@dassault-aviation.com Price and availability on request. H. TOOLING - TOOL BOX (TO-20-008). I. WEIGHT AND BALANCE Change in weight: None . Change in balance with respect to 25% MAC: None. J. REFERENCES Aircraft Maintenance Manual: • GENERAL MAINTENANCE AND SAFETY PRECAUTIONS (Refer to TASK 20-00-00-910-801) • USE OF THE AIRCRAFT MAINTENANCE PROCEDURES (Refer to TASK 20-00-00-910-803) SAFRAN Service Information Letter: • SIL 142-001 "Restraint System Attaching Points" K. OTHER PUBLICATIONS AFFECTED The following publication will be revised at a later date to include the changes introduced by this Service Bulletin: • Aircraft Maintenance Manual. FALCON 900 F900 -480 July 22, 2020 F900 -25-37 Revision 1 Page 2 / 4 DASSAULT AVIATION Proprietary Data ### Page 5 2. ACCOMPLISHMENT INSTRUCTIONS A. GENERAL INSTRUCTIONS AND SAFETY PRECAUTIONS (1) Obey the general maintenance and safety precautions (Refer to TASK 20-00-00-910-801). B. PRELIMINARY STEPS (1) The aircraft must be in the maintenance configuration (Refer to TASK 20-00-00-910-803). C. PROCEDURE (1) Comply with SAFRAN SIL 142-001. D. FINAL STEPS (1) Return the aircraft to the initial configuration. E. RECORDING Record compliance with this Service Bulletin in the appropriate aircraft documents. Fill out the electronic Service Bulletin reply form accessible from the ”Service Bulletin" page on the Falcon portal or register SB implementation at Sbconfiguration@dassault-aviation.com, providing all useful information for aircraft identification: • aircraft type and serial number, • SB compliance: complete or section(s) applied, • remarks, • compliance date, • service center. FALCON 900 F900 -480 July 22, 2020 F900 -25-37 Revision 1 Page 3 / 4 DASSAULT AVIATION Proprietary Data ### Page 6 3. MATERIAL INFORMATION NOTE: Compliance with this Service Bulletin by substituting the part numbers below with interchangeable subsequent part numbers (as per the Master List) is acceptable, provided that subsequent part numbers have the same effectivity as the original ones. A. MODIFICATION KIT Effectivity: All aircraft Kit P/N SBF2000X0476A Kit P/N SBF2000X0476A P/N QTY KEY WORD 22NTM02 or F22NTM02 or EC22NTM02 ¨ 6 Nut F52NTE048 or ECF52NTE048 or NAS679A4 ¨ 1 Nut B. LOCAL PROCUREMENT If necessary: • Washer P/N NAS1149F0432P, Qty: as required • Washer P/N NAS1149F0332P, Qty: as required END OF DOCUMENT FALCON 900 F900 -480 July 22, 2020 F900 -25-37 Revision 1 Page 4 / 4 DASSAULT AVIATION Proprietary Data ### Page 7 ISSUE : 1 REF. : SIL 142-001 DATE : 09/07/2020 PAGE : 1 / 6 Form PP5-040 – R 12/18 Ce document et les informations qu’il contient sont la propriété de Safran. Ils ne doivent être copiés ni communiqués à un tiers sans autorisation préalable et écrite de Safran / This document and the information contained herein are the property of Safran. They must not be copied or disclosed to third parties without prior Safran written authorization Rue Robert Marechal Sénior – Z.I.La limoise - 36100 ISSOUDUN, FRANCE TELEPHONE: 33 (0) 2 54 03 39 39 FAX: 33 (0) 2 54 03 39 00 CAGE CODE : F0465 SERVICE INFORMATION LETTER SIL 142-001 SUBJECT : Restraint system attaching points MODEL : Seat P/N 142XXXX-XX (all S/N) APPLICATION : Restraint system P/N 503533-40X-XXXX TOOLING : N/A REASON : This Service Information letter provide instruction to secure the restraint system. EFFECTIVITY : ALL WEIGHT CHANGE : N/A IDENTIFICATION : N/A ESTIMATED TIME : 0.5 hour per seat S.PASQUIER Product Support Coordinator A. VEAUX Product Support Team Leader ### Page 8 SERVICE INFORMATION LETTER ISSUE : 1 REF. : SIL 142-001 DATE : 09/07/2020 PAGE : 2 / 6 Form PP5-040 – R 12/18 Ce document et les informations qu’il contient sont la propriété de Safran. Ils ne doivent être copiés ni communiqués à un tiers sans autorisation préalable et écrite de Safran / This document and the information contained herein are the property of Safran. They must not be copied or disclosed to third parties without prior Safran written authorization Rue Robert Marechal Sénior – Z.I.La limoise - 36100 ISSOUDUN, FRANCE TELEPHONE: 33 (0) 2 54 03 39 39 FAX: 33 (0) 2 54 03 39 00 INDEX OF REVISION Revision Date Description of revision 0 24/06/2020 Original release 1 09/07/2020 Note added in chapter A and B Alt P/N added for nut P/N 22NTM02 and nut P/N NAS679A4 ### Page 9 SERVICE INFORMATION LETTER ISSUE : 1 REF. : SIL 142-001 DATE : 09/07/2020 PAGE : 3 / 6 Form PP5-040 – R 12/18 Ce document et les informations qu’il contient sont la propriété de Safran. Ils ne doivent être copiés ni communiqués à un tiers sans autorisation préalable et écrite de Safran / This document and the information contained herein are the property of Safran. They must not be copied or disclosed to third parties without prior Safran written authorization Rue Robert Marechal Sénior – Z.I.La limoise - 36100 ISSOUDUN, FRANCE TELEPHONE: 33 (0) 2 54 03 39 39 FAX: 33 (0) 2 54 03 39 00 A - RESTRAINT SYSTEM REMOVAL 1. Pull up the headrest (item 10, fig.1) to remove it. 2. Remove the 2 screws (item 35, fig.1) then remove the backrest fairing (item 30, fig.1). 3. Remove the backrest cushion (item 20, fig.1). NOTE : This cushion is attached with Auto-Agrip 4. Remove the 4 screws (item 45, fig.2) with 4 nuts (item 47, fig.2) and 4 washer (item 46, fig.2) then remove inertial reel (item 40, fig.2). NOTE : Scrap the nuts. 5. Remove the screw (item 55, fig.2), washer (item 56, fig.2),spacer (item 57, fig.2) and nut (not illustrated) then remove the 5th strap (item 50, fig.2). NOTE : Scrap the nut. 6. Remove the lap belt (item 60, fig.2). NOTE : This lap belt is attached with hook on seat belt attach (item 65, fig.2) B - RESTRAINT SYSTEM INSTALLATION NOTE : Use news nuts to install the restraint system. CAUTION : THE SEAT BELT ATTACH (ITEM 65, FIG.2) MUS T HAVE A THIGHTENING TORQUE OF 2,5 N.m ± 10% 1. Check the correct installation of seat belt atta ch P/N 142200-32 (item 65, fig.2) with washer P/N NAS1149F0332P (item 66, fig.2) and nut P/N 22NTM02 (Alt P/N F22NTM02 or EC22NTM02) (item 67, fig.2). 2. Install the lap belt (item 60, fig.2). NOTE : This lap belt is attached with hook on seat belt attach (item 65, fig.2). CAUTION : THE SCREW (ITEM 55, FIG.2) MUST HAVE A THIGHTENING TORQUE OF 9,7 N.m ± 10% 3. Install the 5 th strap (item 50, fig.2) and secure it with the screw P/N AN4-15A (item 55, fig.2), washer P/N NAS1149F0432P (item 56, fig.2),spacer P/N 147200-88 (item 57, fig.2) and nut P/N NAS679A4 or P/N F52NTE048 (Alt P/N ECF52NTE048) (not illustrated). ### Page 10 SERVICE INFORMATION LETTER ISSUE : 1 REF. : SIL 142-001 DATE : 09/07/2020 PAGE : 4 / 6 Form PP5-040 – R 12/18 Ce document et les informations qu’il contient sont la propriété de Safran. Ils ne doivent être copiés ni communiqués à un tiers sans autorisation préalable et écrite de Safran / This document and the information contained herein are the property of Safran. They must not be copied or disclosed to third parties without prior Safran written authorization Rue Robert Marechal Sénior – Z.I.La limoise - 36100 ISSOUDUN, FRANCE TELEPHONE: 33 (0) 2 54 03 39 39 FAX: 33 (0) 2 54 03 39 00 CAUTION : THE SCREW (ITEM 45, FIG.2) MUST HAVE A THIGHTENING TORQUE OF 5,5 N.m ± 10% 4. Install the inertial reel (item 40, fig.2) and s ecure it with 4 screws P/N AN3-4A (item 45, fig.2), 4 washers P/N NAS1149F0332P (item 56, fig.2), and 4 nuts P/N 22NTM02 (Alt P/N F22NTM02 or EC22NTM02) (item 57, fig.2). 5. Install the backrest cushion (item 20, fig.1) NOTE : This cushion is attached with Auto-Agrip CAUTION : THE SHOULDERS STRAPS OF RESTRAINT SYSTEM MUST HAVE TO GO THROUGHT THE HOLE AT THE TOP OF THE FAIRING (ITEM 30,FIG.1). 6. Install the backrest fairing (item 30, fig.1) an d secure it with 2 screws P/N AN526-832R8 (item 35, fig.1). 7. Install the headrest (item 10, fig.1). ### Page 11 SERVICE INFORMATION LETTER ISSUE : 1 REF. : SIL 142-001 DATE : 09/07/2020 PAGE : 5 / 6 Form PP5-040 – R 12/18 Ce document et les informations qu’il contient sont la propriété de Safran. Ils ne doivent être copiés ni communiqués à un tiers sans autorisation préalable et écrite de Safran / This document and the information contained herein are the property of Safran. They must not be copied or disclosed to third parties without prior Safran written authorization Rue Robert Marechal Sénior – Z.I.La limoise - 36100 ISSOUDUN, FRANCE TELEPHONE: 33 (0) 2 54 03 39 39 FAX: 33 (0) 2 54 03 39 00 - Figure 1 - 10 35 30 20 ### Page 12 SERVICE INFORMATION LETTER ISSUE : 1 REF. : SIL 142-001 DATE : 09/07/2020 PAGE : 6 / 6 Form PP5-040 – R 12/18 Ce document et les informations qu’il contient sont la propriété de Safran. Ils ne doivent être copiés ni communiqués à un tiers sans autorisation préalable et écrite de Safran / This document and the information contained herein are the property of Safran. They must not be copied or disclosed to third parties without prior Safran written authorization Rue Robert Marechal Sénior – Z.I.La limoise - 36100 ISSOUDUN, FRANCE TELEPHONE: 33 (0) 2 54 03 39 39 FAX: 33 (0) 2 54 03 39 00 - Figure 2 - 40 45 47 46 50 55 56 57 60 67 66 65 --- 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.