# Dassault Service Bulletin F50-519: No revision named - Rights: © Dassault Aviation. Filed by the FAA in regulations.gov docket FAA-2011-0261; AD 2011-07-11 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Dassault Service Bulletin F50-519](https://openairdocs.org/service-documents/dassault/f50-519.md) - Title as filed: U.S. DOT/FAA - F50-519 (Service Bulletin) - Pages: 9 - PDF: https://openairdocs.org/files/sha256/15/0c/150c87934acd1db7287d6db798ec7c90060825c90cbb2b0bfcefd1c307d34a84 - Page: https://openairdocs.org/service-documents/dassault/f50-519/file/150c87934acd ## Text Some pages are 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 FALCON 50 No 519 FEBRUARY 18, 2011 ALERT ATA 26-07 FIRE PROTECTION EXTINGUISHING CHECK FOR POSSIBLE SWAPPING OF EXTINGUISHING AND LP BLEED LINES AT FRAME 42 FALCON SERVICE BULLETIN Copyright © 2011 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. 207 ### Page 2 FIRE PROTECTION EXTINGUISHING CHECK FOR POSSIBLE SWAPPING OF EXTINGUISHING AND LP BLEED LINES AT FRAME 42 Initial issuance February 18, 2011 List of effective pages : 1 to 5 FALCON 50 F50-519 F50-26-07 ### Page 3 FIRE PROTECTION EXTINGUISHING CHECK FOR POSSIBLE SWAPPING OF EXTINGUISHING AND LP BLEED LINES AT FRAME 42 1. PLANNING INFORMATION A. EFFECTIVITY This Service Bulletin is applicable to MYSTERE-FALCON 50 aircraft with serial numbers 2 through 352. B. REASON On two aircraft, during a "C" check, it was discovered that two lines were swapped at their connection through frame 42. It is highly suspected that the swapping occurred during the S-DUCT replacement a few months earlier. When the 2 lines are swapped the extinguishing system is not available for engine#2. The purpose of this Service Bulletin is to perform a visual inspection in order to make sure that these lines are correctly installed. C. DESCRIPTION The operation consists in inspecting the connection of two lines (extinguishing and LP bleed lines) at Fr 42 in rear compartment. D. COMPLIANCE Mandatory: • This Service Bulletin is rendered mandatory by EASA Emergency Airworthiness Directive N° 2011-0025-E. • 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 nr. EASA.21J.051. F. LABOR Inspection: 0.5 hour FALCON 50 F50-519 February 18, 2011 F50-26-07 Initial issuance Page 1 / 5 DASSAULT AVIATION Proprietary Data ### Page 4 G. MATERIAL - PRICE AND AVAILABILITY 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 Fax: • CANADA and U.S.A.: 1-800-800-4817 • MEXICO: 001-800-800-4817 • Other countries: 1-201-440-7021 Other continents: DASSAULT AVIATION Falcon Spares BOITE POSTALE N°101 AEROPORT DU BOURGET 93350 - LE BOURGET Cedex (FRANCE) Please contact your Dassault Aviation Account Representative Telephone: 33 (0)1.48.35.56.78 Fax: 33 (0)1.48.35.56.00 Price and availability on request. H. TOOLING - PRICE AND AVAILABILITY Normal maintenance tooling. I. WEIGHT AND BALANCE Change in weight: None. Change in balance with respect to 25% MAC: None. J. REFERENCES Standard Practices: • procedure 20-000 Maintenance Manual: • procedure 26-202 FALCON 50 F50-519 February 18, 2011 F50-26-07 Initial issuance Page 2 / 5 DASSAULT AVIATION Proprietary Data ### Page 5 2. ACCOMPLISHMENT INSTRUCTIONS A. PRELIMINARY STEPS (1) The aircraft must be in the maintenance configuration (refer to Standard Practices, procedure 20-000). B. PROCEDURE (1) In the rear compartment, perform a visual inspection of the engine#2 LP bleed line (F50B723102) and extinguishing line (F50B791203) connected at Fr 42 (Refer to fig. 1): Check that the extinguishing line (not insulated) is connected to the union located on the S-duct side and that the LP bleed line (insulated) is connected to the union located on the fuselage side. NOTE: Refer to the routing of each line to be sure to choose the appropriate line. (a) If the lines are not swapped, return the aircraft to service. (b) If the lines are swapped: • Inspect the lines for deformation. Replace as necessary. • Restore correct connection of the lines as shown on fig. 1. • Check the correct connection of engine#2 extinguishing lines (lines B) in accordance with procedure 26-202 . (2) Using the card located at the end of the Service Bulletin, or, the reply form located on the portal, report the inspection results to Dassault Aviation. C. RECORDING Record compliance with this Service Bulletin in the appropriate aircraft documents. Fill out the card located at the end of the Service Bulletin and mail or fax it to Dassault Aviation or Dassault Falcon Jet. FALCON 50 F50-519 February 18, 2011 F50-26-07 Initial issuance Page 3 / 5 DASSAULT AVIATION Proprietary Data ### Page 6 3. MATERIAL INFORMATION None. FALCON 50 F50-519 February 18, 2011 F50-26-07 Initial issuance Page 4 / 5 DASSAULT AVIATION Proprietary Data ### Page 7 (OCR) DASSAULT SERVICE BULLETIN AVIATION FALCON 50 F50-519 Fr 42 LH Fr 41 LH Non return valve Engine 2/3 extinguisher (Fr 40) A DASSAULT AVIATION Proprietary Data Filter-pressurization air (Fr 38) S-duct line LP bleed line (insulated) Fr 42 LH View A Figure 1: Rear compartment - Visual inspection at Fr42, LH side February 18, 2011 F50-26-07 Initial issuance Page 5 / 5 END OF DOCUMENT ### Page 8 (OCR) NO POSTAGE NECESSARY FROM IF MAILED IN THE UNITED STATES ZIP CODE BUSINESS REPLY MAIL FIRST CLASS MAIL PERMIT NO. 3306 HACKENSACK, NJ 07602 POSTAGE WILL BE PAID BY ADDRESSEE: DASSAULT FALCON JET CORP. PO BOX 1946 SO HACKENSACK NJ 07606-9946 ATTENTION: FIELD SERVICE DEPARTMENT DASSAULT AVIATION 78, Quai Marcel Dassault Cedex 300 92552 SAINT-CLOUD Cedex FRANCE A l'attention de DSC ### Page 9 SERVICE BULLETINS COMPLIANCE FALCON 50 A/C S/N DASSAULT AVIATION Number ATA Number F50 519 F50 26 07 Coding: C complete compliance T partial compliance Performed by: Remarks: Initial issuance Date: Signature: SERVICE BULLETINS COMPLIANCE Would you be kind enough to inform us that this Service Bulletin is complied with: - For "Western Hemisphere", mail upper card (No postage necessary if mailed in the U.S.A.) or fax to Dassault Falcon Jet: 1-201-541-4700. - For "Other Continents", mail card herebelow or fax to Dassault Aviation: 33 (0)1.47.11.65.21. On the occasion, if other Service Bulletins have been simultaneously complied with could you complete the blank spaces provided for this purpose. APPLICATION DE BULLETINS DE SERVICE Lorsque vous aurez applique ce Bulletin de Service sur votre avion, veuillez avoir l'amabilite de nous en informer: - Utiliser la carte reponse superieure pour continent americain (Dispensee de timbrage pour postage depuis les U.S.A.) ou le fax pour Dassault Falcon Jet : 1-201-541-4700. - Ou la carte reponse inferieure pour autres continents ou le fax pour Dassault Aviation : 33 (0)1.47.11.65.21. Eventuellement, si d'autres Bulletins de Service ont ete appliques simultanement, vous pouvez les mentionner dans les cases vierges prevues a cet effet. APPLICATION DES BULLETINS DE SERVICE SERVICE BULLETINS COMPLIANCE FALCON 50 A/C S/N DASSAULT AVIATION Number Numero DASSAULT AVIATION ATA Number Numero ATA F50 519 F50 26 07 Coding: C complete complianceapplication totale T partial complianceapplication partielle Performed by: Fait par: Remarks: Initial issuance Date: Signature: Remarques: Edition originale --- 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.