# Dassault Service Bulletin F20-785: No revision named - Rights: © Dassault Aviation. Filed by the FAA in regulations.gov docket FAA-2013-0423; AD 2013-26-05 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Dassault Service Bulletin F20-785](https://openairdocs.org/service-documents/dassault/f20-785.md) - Title as filed: U.S. DOT/FAA - SB F20-785 - Pages: 8 - PDF: https://openairdocs.org/files/sha256/aa/1c/aa1c4c8cb7aef612ec842f7a54cf349f649ff389a7aa9711bbb2c8480e847b5c - Page: https://openairdocs.org/service-documents/dassault/f20-785/file/aa1c4c8cb7ae ## 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 20 No 785 JUNE 11, 2012 MANDATORY ATA 26-15 FIRE PROTECTION EXTINGUISHING SYSTEM DEFECTIVE CHARGE INDICATOR INSPECTION FALCON SERVICE BULLETIN Copyright © 2012 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. 084 ### Page 2 FIRE PROTECTION EXTINGUISHING SYSTEM DEFECTIVE CHARGE INDICATOR INSPECTION Initial issuance June 11, 2012 List of effective pages : 1 to 4 FALCON 20 F20-785 F20-26-15 ### Page 3 FIRE PROTECTION EXTINGUISHING SYSTEM DEFECTIVE CHARGE INDICATOR INSPECTION 1. PLANNING INFORMATION A. EFFECTIVITY This Service Bulletin is applicable to all FAN JET FALCON series and MYSTERE-FALCON 20-()5 aircraft. B. REASON Due to a manufacturing defect, some batches of charge indicators installed on fire extinguishers on Fan Jet Falcon, Mystere-Falcon 20-()5 and Falcon 200 may be subject to corrosion and not properly indicate a loss of pressure inside the bottle. This could lead to a dormant failure impacting the capability to extinguish fires either in engine(s) or APU or rear compartments. The purpose of this Service Bulletin is to identify the batch number of the charge indicator installed on each fire extinguisher. C. DESCRIPTION The operation consists in : • checking the manufacturing batch number of the charge indicator installed on each fire extinguisher, • weighing the suspected ones. D. COMPLIANCE Mandatory: • It is anticipated that this Service Bulletin will be rendered mandatory by an EASA Airworthiness Directive. • 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 Estimated labor-hours: • Identification of the batch numbers: 1 hour • Weighing: 1h30 per fire extinguisher NOTE: These labor-hours only concern the work described in this Service Bulletin and do not include other maintenance work which may be performed on this occasion. G. MATERIAL - PRICE AND AVAILABILITY The modification kit may be obtained from either address listed below: FALCON 20 F20-785 June 11, 2012 F20-26-15 Initial issuance Page 1 / 4 DASSAULT AVIATION Proprietary Data ### Page 4 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. Mirror. I. WEIGHT AND BALANCE Change in weight: None. Change in balance with respect to 25% MAC: None. J. REFERENCES Aircraft Maintenance Manual: • 20-00-0-2 "Summary of mandatory precautions to be taken during aircraft maintenance operations" • 26-20-3-6 "Weighing of engine freon fire extinguishers" K. OTHER PUBLICATIONS AFFECTED None. FALCON 20 F20-785 June 11, 2012 F20-26-15 Initial issuance Page 2 / 4 DASSAULT AVIATION Proprietary Data ### Page 5 2. ACCOMPLISHMENT INSTRUCTIONS A. PRELIMINARY STEPS (1) The aircraft must be in the maintenance configuration (Refer to Maintenance Manual, chapter 20-00-0-2). (2) Make sure that the aircraft is de-energized. (3) Make sure that the A/C batteries and all the external power sources are disconnected. (4) On the cockpit circuit breaker panel (RH side), disengage the circuit breaker "FIRE EXTINGUISH" (31W). (5) In the rear compartment, on the battery box, disengage the circuit breaker (32W). (6) Install a "DO NOT ENERGIZE" warning placard in the cockpit. B. PROCEDURE Refer to fig. 1 (1) Check the manufacturing batch number on the data plate of the charge indicator installed on each engine fire extinguisher P/N 111-1555-324-12A or 811456 or 111-355-32412A, and APU fire extinguisher P/N 111-011-324-12A or 811475: (a) If the batch number is not included in the interval [168 - 200], resume with paragraph C. (b) If the batch number is included in the interval [168 - 200], weigh the fire extinguisher (refer to Maintenance Manual, chapter 26-20-3-6). C. FINAL STEPS (1) Engage the circuit breakers (31W), (32W). (2) Remove the "DO NOT ENERGIZE" warning placard. D. 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, or fill out the electronic Service Bulletin reply form located in the ”Service Bulletin" page on the Falcon portal. FALCON 20 F20-785 June 11, 2012 F20-26-15 Initial issuance Page 3 / 4 DASSAULT AVIATION Proprietary Data ### Page 6 Figure 1: CHARGE INDICATOR DATA PLATE END OF DOCUMENT FALCON 20 F20-785 June 11, 2012 F20-26-15 Initial issuance Page 4 / 4 ### Page 7 (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 8 SERVICE BULLETINS COMPLIANCE FALCON 20 A/C S/N DASSAULT AVIATION Number ATA Number F20 785 F20 26 15 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 20 A/C S/N DASSAULT AVIATION Number Numero DASSAULT AVIATION ATA Number Numero ATA F20 785 F20 26 15 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.