# FALCON 900

No 410
DECEMBER 20, 2010 

# MANDATORY

ATA 28-12
FUEL

REFUELING SYSTEM REPLACEMENT OF HIGH-LEVEL SENSORS P/N 722105-2 

# 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.



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### FUEL REFUELING SYSTEM REPLACEMENT OF HIGH-LEVEL SENSORS P/N 722105-2

Initial issuance December 20, 2010 List of effective pages : 1 to 4 

# FALCON 900 F900-410

F900-28-12

### FUEL REFUELING SYSTEM REPLACEMENT OF HIGH-LEVEL SENSORS P/N 722105-2

1. PLANNING INFORMATION
A. EFFECTIVITY This Service Bulletin is applicable to FALCON 900 aircraft with serial numbers 1 through 202 which are not equipped with high-level sensors P/N 722105-3. B. REASON Several cases of fuel spillage have been reported. Spillage was due to an external leak of the high-level sensors P/N 722105-2 or 722105-2 Amdt A or 722105-2 Amdt B (L12QS/R12QS). Investigation revealed that it was due to the separation of the high-level sensors cannon plug from the rest of the equipment. The purpose of this Service Bulletin is to replace the defective high-level sensors (L12QS/R12QS) with high-level sensors P/N 722105-3 on which the cannon plug is screwed to prevent separation from the rest of the equipment. C. DESCRIPTION The operation consists in replacing the two high-level sensors (L12QS/R12QS). 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 This Service Bulletin covers DASSAULT AVIATION modification FALCON MF900 M5638 which has been approved by EASA. The technical content of this document is approved under the authority of DOA nr. EASA.21J.051. F. LABOR Estimated labor-hours: 4 hours 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 900 F900-410

December 20, 2010 F900-28-12
Initial issuance Page 1 / 4DASSAULT AVIATION Proprietary DataWestern 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 20-001. Aircraft Maintenance Manual: • Procedure 28-603. K. OTHER PUBLICATIONS AFFECTED The following publication will be revised at a later date to account for the changes introduced by this Service Bulletin: • Illustrated Parts Catalog. 

# FALCON 900 F900-410

December 20, 2010 F900-28-12
Initial issuance Page 2 / 4DASSAULT AVIATION Proprietary Data2. ACCOMPLISHMENT INSTRUCTIONS

A. PRELIMINARY STEPS (1) The aircraft must be in the maintenance configuration (refer to Standard Practices, procedure 20-001). B. REPLACEMENT OF HIGH-LEVEL SENSORS (1) Replace the high-level sensors (L12QS/R12QS) (refer to Maintenance Manual, procedure 28-603). NOTE: The fuel quantity remaining in the wings can be 1,500 pounds (0,68 kg) or less. C. RECORDING Record compliance with this Service Bulletin in the appropriate aircraft documents. Fill out the electronic Service Bulletin reply form located in the ”Service Bulletin" page on the Falcon portal. 

# FALCON 900 F900-410

December 20, 2010 F900-28-12
Initial issuance Page 3 / 4DASSAULT AVIATION Proprietary Data3. MATERIAL INFORMATION

A. MODIFICATION KIT KIT P/N SBF900-0410A

NEW P/N QTY KEY WORD OLD P/N 722105-3 1 High-level sensor (Thermistor) 722105-2 MS29513-141 1 O-ring



### END OF DOCUMENT 

# FALCON 900 F900-410

December 20, 2010 F900-28-12
Initial issuance Page 4 / 4DASSAULT AVIATION Proprietary DataSERVICE BULLETINS COMPLIANCE FALCON 900 A/C S/N

DASSAULT AVIATION Number ATA Number F900 410 F900 28 12 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 900 A/C S/N

DASSAULT AVIATION Number Numero DASSAULT AVIATION ATA Number Numero ATA F900 410 F900 28 12 Coding: C complete compliance application totale T partial compliance application partielle

Performed by: Fait par: Remarks: Initial issuance Date: Signature: Remarques: Edition originale