AD 2011-07-11

(a) This airworthiness directive (AD) becomes effective April 18, 2011.

(b) None.

(c) This AD applies to Dassault Aviation Model Mystere-Falcon 50 airplanes, all serial numbers, certificated in any category.

(d) Air Transport Association (ATA) of America Code 26: Fire protection.

(e) The mandatory continued airworthiness information (MCAI) states:

On two occurrences on Myst re-Falcon 50 aeroplanes in service, it was detected that two pipes had been swapped in maintenance at the frame 42 firewall. The swapped lines are the extinguishing system line to engine # 2, and engine # 2 Low Pressure (LP) bleed line.

If the swapping of these two lines is not detected and corrected, in case of engine # 2 fire, the fire extinguishing capability would not be operational.

(f) You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.

(g) Within 8 days after the effective date of this AD: Visually inspect the extinguishing system line and the low pressure bleed line of the number 2 engine at frame 42 in the rear compartment to determine proper installation of the lines, in accordance with paragraph 2.B.(1) of the Accomplishment Instructions of Dassault Service Bulletin F50-519, dated February 18, 2011.

(1) If the lines are properly installed, no further action is required by this paragraph.

(2) If the lines are improperly installed, before further flight, do the actions specified in paragraphs (g)(2)(i) and (g)(2)(ii) of this AD, in accordance with paragraph 2.B.(1) of the Accomplishment Instructions of Dassault Service Bulletin F50-519, dated February 18, 2011.

(i) Inspect the improperly installed lines for deformation.

(A) If no deformation is found on the improperly installed lines, before further flight, re-install the lines using the proper connections, in accordance with paragraph 2.B.(1) of the Accomplishment Instructions of Dassault Service Bulletin F50-519, dated February 18, 2011.

(B) If any deformation is found on the improperly installed lines, before further flight, replace the lines in accordance with paragraph 2.B.(1) of the Accomplishment Instructions of Dassault Service Bulletin F50-519, dated February 18, 2011.

(ii) Verify the correct connection of the lines in accordance with paragraph 2.B.(1) of the Accomplishment Instructions of Dassault Service Bulletin F50-519, dated February 18, 2011.

(h) Submit a report of the findings (both positive and negative) of the inspection required by paragraph (g) of this AD to Dassault Aviation, as specified in paragraph 2.B.(2) of the Accomplishment Instructions of Dassault Service Bulletin F50-519, dated February 18, 2011. Submit the report at the applicable time specified in paragraph (h)(1) or (h)(2) of this AD. The report must include the information identified in Dassault Service Bulletin F50-519, dated February 18, 2011. Under the provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.), the Office of Management and Budget (OMB) has approved the information collection requirements contained in this AD and has assigned OMB Control Number 2120-0056.

(1) If the inspection was done on or after the effective date of this AD: Submit the report within 10 days after the inspection.

(2) If the inspection was done before the effective date of this AD: Submit the report within 10 days after the effective date of this AD.

Note 1:

This AD differs from the MCAI and/or service information as follows: No Differences.

(i) The following provisions also apply to this AD:

(1) Alternative Methods of Compliance (AMOCs): The Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the International Branch, send it to ATTN: Tom Rodriguez, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone 425-227-1137; fax 425-227-1149. Information may be e-mailed to: 9-ANM-116-AMOC-REQUESTS@faa.gov. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office. The AMOC approval letter must specifically reference this AD.

(2) Airworthy Product: For any requirement in this AD to obtain corrective actions from a manufacturer or other source, use these actions if they are FAA-approved. Corrective actions are considered FAA-approved if they are approved by the State of Design Authority (or their delegated agent). You are required to assure the product is airworthy before it is returned to service.

(3) Reporting Requirements: A federal agency may not conduct or sponsor, and a person is not required to respond to, nor shall a person be subject to a penalty for failure to comply with a collection of information subject to the requirements of the Paperwork Reduction Act unless that collection of information displays a current valid OMB Control Number. The OMB Control Number for this information collection is 2120-0056. Public reporting for this collection of information is estimated to be approximately 5 minutes per response, including the time for reviewing instructions, completing and reviewing the collection of information. All responses to this collection of information are mandatory. Comments concerning the accuracy of this burden and suggestions for reducing the burden should be directed to the FAA at: 800 Independence Ave., SW., Washington, DC 20591, Attn: Information Collection Clearance Officer, AES-200.

(j) Refer to MCAI European Aviation Safety Agency Emergency Airworthiness Directive 2011-0025-E, dated February 18, 2011; and Dassault Service Bulletin F50-519, dated February 18, 2011; for related information.

(k) You must use Dassault Service Bulletin F50-519, dated February 18, 2011, to do the actions required by this AD, unless the AD specifies otherwise.

(1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51.

(2) For service information identified in this AD, contact Dassault Falcon Jet, P.O. Box 2000, South Hackensack, New Jersey 07606; telephone 201-440-6700; Internet http://www.dassaultfalcon.com.

(3) You may review copies of the service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington. For information on the availability of this material at the FAA, call 425-227-1221.

(4) You may also review copies of the service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.