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###### Department of Transportation

###### Federal Aviation Administration 

          - 14 CFR Part 39 
          - [Docket No. FAA-2007-27982; Directorate Identifier 2007-NM-009-AD] 
          - RIN 2120-AA64 

# AGENCY:

Federal Aviation Administration (FAA), Department of Transportation (DOT). 

# ACTION:

Notice of proposed rulemaking (NPRM). 

# SUMMARY:

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) issued 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: 

* * * accidents which occurred to in-service aircraft caused by the violent opening of a passenger door, related to excessive residual pressurization in the cabin on ground. 

* * * * *

This unsafe condition could result in injury to crew members opening the passenger door. The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI. 

# DATES:

We must receive comments on this proposed AD by May 24, 2007. 

# ADDRESSES:

You may send comments by any of the following methods: 
      -  DOT Docket Web Site:                          Go to                          http://dms.dot.gov                          and follow the instructions for sending your comments electronically.                     
      -  Fax:                          (202) 493-2251.                     
      -  Mail:                          Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-401, Washington, DC 20590-0001.                     
      -  Hand Delivery:                          Room PL-401 on the plaza level of the Nassif Building, 400 Seventh Street, SW., Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays.                     
      -  Federal eRulemaking Portal: http://www.regulations.gov.                          Follow the instructions for submitting comments.                     

## Examining the AD Docket 

                    You may examine the AD docket on the Internet at                     *http://dms.dot.gov;*                     or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this proposed AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Office (telephone (800) 647-5227) is in the                     **ADDRESSES**                     section. Comments will be available in the AD docket shortly after receipt.                 

# FOR FURTHER INFORMATION CONTACT:

Tom Stafford, Aerospace Engineer, International Branch, ANM-116, FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425) 227-1622; fax (425) 227-1149. 

# SUPPLEMENTARY INFORMATION:

## Streamlined Issuance of AD 

                    The FAA is implementing a new process for streamlining the issuance of ADs related to MCAI. This streamlined process will allow us to adopt MCAI safety requirements in a more efficient manner and will reduce safety risks to the public. This process continues to follow all FAA AD issuance processes to meet legal, economic, Administrative Procedure Act, and                     **Federal Register**                     requirements. We also continue to meet our technical decision-making responsibilities to identify and correct unsafe conditions on U.S.-certificated products.                 

This proposed AD references the MCAI and related service information that we considered in forming the engineering basis to correct the unsafe condition. The proposed AD contains text copied from the MCAI and for this reason might not follow our plain language principles. 

## Comments Invited 

                    We invite you to send any written relevant data, views, or arguments about this proposed AD. Send your comments to an address listed under the                     **ADDRESSES**                     section. Include “Docket No. FAA-2007-27982; Directorate Identifier 2007-NM-009-AD” at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will consider all comments received by the closing date and may amend this proposed AD because of those comments.                 

                    We will post all comments we receive, without change, to                     *http://dms.dot.gov*, including any personal information you provide. We will also post a report summarizing each substantive verbal contact we receive about this proposed AD.                 

## Discussion 

The European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community, has issued EASA Airworthiness Directive 2007-0005, dated January 8, 2007 (referred to after this as “the MCAI”), to correct an unsafe condition for the specified products. The MCAI states:

The modification rendered mandatory by this Airworthiness Directive (AD) falls within the scope of a set of corrective measures undertaken by AIRBUS subsequent to accidents which occurred to in-service aircraft caused by the violent opening of a passenger door, related to excessive residual pressurization in the cabin on ground. 

In order to prevent the flight crews operating in manual mode when discrete spoilers signals are true and ensures OFV (outflow valve) or depress valve are driven open after landing, this modification consists of introducing an automatic opening logic either for the forward and aft OFV or for the single depress valve, when the aircraft is on ground, immediately after landing.

The MCAI requires the modification described previously. This unsafe condition could result in injury to crew members opening the passenger door. You may obtain further information by examining the MCAI in the AD docket. 

## Relevant Service Information 

                    Airbus has issued Service Bulletins A300-21-0132, dated July 28, 2006; A300-21-6049, Revision 01, dated September 15, 2006; and A310-21-2062, dated July 20, 2006. The actions described in the service information are intended to correct the unsafe condition identified in the MCAI.                           ( print page 20290)    

## FAA's Determination and Requirements of This Proposed AD 

This product has been approved by the aviation authority of another country, and is approved for operation in the United States. Pursuant to our bilateral agreement with the State of Design Authority, they have notified us of the unsafe condition described in the MCAI and service information referenced above. We are proposing this AD because we evaluated all information provided by the State of Design Authority and determined the unsafe condition exists and is likely to exist or develop on other products of the same type design. 

## 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 proposed different actions in this AD from those in the MCAI in order to follow FAA policies. Any such differences are described in a separate paragraph of the proposed AD. These requirements, if ultimately adopted, will take precedence over the actions copied from the MCAI. 

## Costs of Compliance 

Based on the service information, we estimate that this proposed AD would affect about 191 products of U.S. registry. We also estimate that it would take up to 34 work-hours per product to comply with the basic requirements of this proposed AD. The average labor rate is $80 per work-hour. Required parts would cost up to $5,470 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 costs. 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 the proposed AD on U.S. operators to be up to $1,564,290, or $8,190 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 proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would 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 proposed regulation: 

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 proposed AD and placed it in the AD docket. 

# List of Subjects in 14 CFR Part 39

      - Air transportation
      - Aircraft
      - Aviation safety
      - Safety

## The Proposed Amendment 

Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 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. 

§ 39.13 

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

**Airbus:**                                 Docket No. FAA-2007-27982; Directorate Identifier 2007-NM-009-AD.                             

## Comments Due Date 

(a) We must receive comments by May 24, 2007. 

## Affected ADs 

(b) None. 

## Applicability 

(c) This AD applies to the following airplanes, certificated in any category: 

(1) Model A300 series airplanes, manufacturer serial numbers 0202, 0205, 0225, 0299, and 0302, in forward facing crew cockpit configuration, except airplanes which have received in service application of Airbus Service Bulletin A300-21-0132. 

(2) Model A310 series airplanes, all certified models, all serial numbers, except airplanes which have received in service application of Airbus Service Bulletin A310-21-2062. 

(3) Model A300-600 series airplanes, all certified models, all serial numbers, on which Airbus Modification 03881 is embodied, except airplanes which have received either incorporation of Airbus Modification 12942 during production, or application of Airbus Service Bulletin A300-21-6049 in service. 

## Subject 

(d) Doors. 

## Reason 

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

The modification rendered mandatory by this Airworthiness Directive (AD) falls within the scope of a set of corrective measures undertaken by AIRBUS subsequent to accidents which occurred to in-service aircraft caused by the violent opening of a passenger door, related to excessive residual pressurization in the cabin on ground. 

In order to prevent the flight crews operating in manual mode when discrete spoilers signals are true and ensures OFV (outflow valve) or depress valve are driven open after landing, this modification consists of introducing an automatic opening logic either for the forward and aft OFV or for the single depress valve, when the aircraft is on ground, immediately after landing. 

This unsafe condition could result in injury to crew members opening the passenger door. 

## Actions and Compliance 

(f) Unless already done, do the following actions. 

(1) Within 18 months after the effective date of this AD: Install an automatic opening logic either for the forward and aft OFV (outflow valve) or for the single depress valve, as applicable, by introducing the use of discrete spoiler signals, driving one (Model A300 airplanes) or two (Model A310 airplanes and Model A300-600 series airplanes) time delay relays, in accordance with the instructions of Airbus Service Bulletin A300-21-0132, dated July 28, 2006; A310-21-2062, dated July 20, 2006; or A300-21-6049, Revision 01, dated September 15, 2006; as applicable. 

                                (2) Actions done before the effective date of this AD in accordance with Airbus Service Bulletin A300-21-6049, dated August 31,                                       ( print page 20291)                                    2005, are acceptable for compliance with the corresponding requirements 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, FAA, ATTN: Tom Stafford, Aerospace Engineer, 1601 Lind Avenue, SW., Renton, Washington, 98057-3356, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Before using any AMOC approved in accordance with § 39.19 on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office.                             

                                (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 2007-0005, dated January 8, 2007; and Airbus Service Bulletins A300-21-0132, dated July 28, 2006; A300-21-6049, Revision 01, dated September 15, 2006; and A310-21-2062, dated July 20, 2006; for related information. 

Issued in Renton, Washington, on April 16, 2007. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, Aircraft Certification Service.

 [FR Doc. E7-7733 Filed 4-23-07; 8:45 am] 

BILLING CODE 4910-13-P