AD 2008-12-15

We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

On early FALCON airplanes featuring the EASy cockpit, a new oxygen controller has been installed. An internal review has determined that the passenger oxygen mask boxes do not fit this new controller. In OVERRIDE mode, that is to say, when the internal pressure reducer is by-passed, oxygen (O2) flow is nominal, while in NORMAL mode O2 flow is reduced by half compared to what it should be.
Consequently, in NORMAL mode the minimum mass flow of supplemental O2 for each passenger, as required by Certification Specifications, is no longer met. This could lead to passenger incommodation due to insufficient body oxygenation.

The unsafe condition is incorrectly fitted passenger oxygen mask boxes for the new controllers, which could result in incapacitation of passengers due to insufficient oxygen in the event of rapid depressurization of the airplane when the controller is in NORMAL mode. We are issuing this AD to require actions to correct the unsafe condition on these products.

Final rule.

2008-12-15 Dassault Aviation: Amendment 39-15559. Docket No. FAA- 2008-0301; Directorate Identifier 2007-NM-284-AD.

Effective Date

(a) This airworthiness directive (AD) becomes effective July 23, 2008.

Affected ADs

(b) None.

Applicability

(c) This AD applies to Dassault Model Falcon 2000EX and 900EX airplanes, certificated in any category, as identified in paragraphs (c)(1) and (c)(2) of this AD.
(1) Falcon 900EX airplanes, serial number (S/N) 120 through 146 inclusive, on which Dassault Service Bulletin F900EX-257 has not been implemented.

(2) Falcon 2000EX airplanes, S/N 28 through 55 inclusive, on which Dassault Service Bulletin F2000EX-61 has not been implemented.

Subject

(d) Air Transport Association (ATA) of America Code 35: Oxygen.

Reason

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

On early FALCON airplanes featuring the EASy cockpit, a new oxygen controller has been installed. An internal review has determined that the passenger oxygen mask boxes do not fit this new controller. In OVERRIDE mode, that is to say, when the internal pressure reducer is by-passed, oxygen (O2) flow is nominal, while in NORMAL mode O2 flow is reduced by half compared to what it should be.
Consequently, in NORMAL mode the minimum mass flow of supplemental O2 for each passenger, as required by Certification Specifications, is no longer met. This could lead to passenger incommodation due to insufficient body oxygenation.
The purpose of this Airworthiness Directive (AD) is to mandate the replacement of the passenger oxygen mask boxes by new-designed ones [boxes] adapted to the controller.

The unsafe condition is incorrectly fitted passenger oxygen mask boxes for the new controllers, which could result in incapacitation of passengers due to insufficient oxygen in the event of rapid depressurization of the airplane when the controller is in NORMAL mode.

Actions and Compliance

(f) Unless already done do the following actions:
(1) Within 15 months after the effective date of this AD, replace the passenger oxygen mask boxes in accordance with Dassault Service Bulletins F900EX-257 or F2000EX-61, both Revision 1, both dated March 22, 2007, as applicable.
(2) Actions done before the effective date of this AD in accordance with Dassault Service Bulletins F900EX-257, dated March 15, 2006; and F2000EX-61, dated March 22, 2006; are acceptable for compliance with the corresponding actions of this AD.

FAA AD Differences

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

Other FAA AD Provisions

(g) 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. Send information 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. Before using any approved AMOC on any airplane to which the AMOC applies, notify your appropriate principal inspector (PI) in the FAA Flight Standards District Office (FSDO), or lacking a PI, your local FSDO.
(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: For any reporting requirement in this AD, under the provisions of the Paperwork Reduction Act, the Office of Management and Budget (OMB) has approved the information collection requirements and has assigned OMB Control Number 2120- 0056.

Related Information

(h) Refer to MCAI European Aviation Safety Agency Airworthiness Directive 2007-0073, dated March 22, 2007; and Dassault Service Bulletins F900EX-257 and F2000EX-61, both Revision 1, both dated March 22, 2007; for related information.

Material Incorporated by Reference

(i) You must use Dassault Service Bulletin F900EX-257, Revision 1, dated March 22, 2007; or Dassault Service Bulletin F2000EX-61, Revision 1, dated March 22, 2007; as applicable; 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.
(3) You may review copies at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or 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/cfr/ibr- locations.html.

Discussion

We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to include an AD that would apply to the specified products. That NPRM was published in the Federal Register on March 18, 2008 (73 FR 14403). That NPRM proposed to correct an unsafe condition for the specified products. The MCAI states:

On early FALCON airplanes featuring the EASy cockpit, a new oxygen controller has been installed. An internal review has determined that the passenger oxygen mask boxes do not fit this new controller. In OVERRIDE mode, that is to say, when the internal pressure reducer is by-passed, oxygen (O2) flow is nominal, while in NORMAL mode O2 flow is reduced by half compared to what it should be.
Consequently, in NORMAL mode the minimum mass flow of supplemental O2 for each passenger, as required by Certification Specifications, is no longer met. This could lead to passenger incommodation due to insufficient body oxygenation.
The purpose of this Airworthiness Directive (AD) is to mandate the replacement of the passenger oxygen mask boxes by new-design ones [boxes] adapted to the controller.

The unsafe condition is incorrectly fitted passenger oxygen mask boxes for the new controllers, which could result in incapacitation of passengers due to insufficient oxygen in the event of rapid depressurization of the airplane when the controller is in NORMAL mode. You may obtain further information by examining the MCAI in the AD docket.

Comments

We gave the public the opportunity to participate in developing this AD. We received no comments on the NPRM or on the determination of the cost to the public.

Conclusion

We reviewed the available data and determined that air safety and the public interest require adopting the AD as proposed.

Differences Between This AD and the MCAI or Service Information

We have reviewed the MCAI and related service information and, in general, agree with their substance. But we might have found it necessary to use different words from those in the MCAI to ensure the AD is clear for U.S. operators and is enforceable. In making these changes, we do not intend to differ substantively from the information provided in the MCAI and related service information.
We might also have required different actions in this AD from those in the MCAI in order to follow our FAA policies. Any such differences are highlighted in a NOTE within the AD.

Costs of Compliance

We estimate that this AD will affect about 27 products of U.S. registry. We also estimate that it will take about 16 work-hours per product to comply with the basic requirements of this AD. The average labor rate is $80 per work-hour. Required parts will cost about $0 per product. Where the service information lists required parts costs that are covered under warranty, we have assumed that there will be no charge for these parts. As we do not control warranty coverage for affected parties,some parties may incur costs higher than estimated here. Based on these figures, we estimate the cost of this AD to the U.S. operators to be $34,560, or $1,280 per product.

Authority for This Rulemaking

Title 49 of the United States Code specifies the FAA's authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. "Subtitle VII: Aviation Programs,'' describes in more detail the scope of the Agency's authority.
We are issuing this rulemaking under the authority described in "Subtitle VII, Part A, Subpart III, Section 44701: General requirements.'' Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action.

Regulatory Findings

We determined that this AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government.
For the reasons discussed above, I certify this AD:
1. Is not a "significant regulatory action'' under Executive Order 12866;
2. Is not a "significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and
3. Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act.
We prepared a regulatory evaluation of the estimated costs to comply with this AD and placed it in the AD docket.

Examining the AD Docket

You may examine the AD docket on theInternet at http:// www.regulations.gov; or in person at the Docket Operations office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains the NPRM, the regulatory evaluation, any comments received, and other information. The street address for the Docket Operations office (telephone (800) 647-5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt.

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.

Adoption of the Amendment

Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

1. The authority citation for part 39 continues to read as follows:

Authority: 49 U.S.C. 106(g), 40113, 44701.

Sec. 39.13 [Amended]

2. The FAA amends Sec. 39.13 by adding the following new AD: