96-3836. Airworthiness Directives; Airbus Model A320-231 Series Airplanes  

  • [Federal Register Volume 61, Number 37 (Friday, February 23, 1996)]
    [Rules and Regulations]
    [Pages 6931-6932]
    From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
    [FR Doc No: 96-3836]
    
    
    
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    DEPARTMENT OF TRANSPORTATION
    14 CFR Part 39
    
    [Docket No. 95-NM-89-AD; Amendment 39-9522; AD 96-04-10]
    
    
    Airworthiness Directives; Airbus Model A320-231 Series Airplanes
    
    AGENCY: Federal Aviation Administration, DOT.
    
    ACTION: Final rule.
    
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    SUMMARY: This amendment adopts a new airworthiness directive (AD), 
    applicable to certain Airbus Model A320-231 series airplanes, that 
    requires modification of the fire wall of each engine. This amendment 
    is prompted by a report of a fire in the engine of an in-service 
    airplane due to the fire wall being improperly sealed during 
    production. The actions specified by this AD are intended to prevent 
    propagation of a fire through a gap (opening) in the fire wall in the 
    event of an engine fire, as a result of improperly sealed fire wall.
    
    DATES: Effective March 25, 1996.
        The incorporation by reference of certain publications listed in 
    the regulations is approved by the Director of the Federal Register as 
    of March 25, 1996.
    
    ADDRESSES: The service information referenced in this AD may be 
    obtained from Airbus Industrie, 1 Rond Point Maurice Bellonte, 31707 
    Blagnac Cedex, France. This information may be examined at the Federal 
    Aviation Administration (FAA), Transport Airplane Directorate, Rules 
    Docket, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of 
    the Federal Register, 800 North Capitol Street, NW., suite 700, 
    Washington, DC.
    
    FOR FURTHER INFORMATION CONTACT: Charles Huber, Aerospace Engineer, 
    Standardization Branch, ANM-113, FAA, Transport Airplane Directorate, 
    1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (206) 
    227-2589, fax (206) 227-1149.
    
    SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal 
    Aviation Regulations (14 CFR part 39) to include an airworthiness 
    directive (AD) that is applicable to certain Airbus Model A320-231 
    series airplanes was published in the Federal Register on November 8, 
    1995 (60 FR 56270). That action proposed to require modification of the 
    fire wall of each engine on these airplanes.
        Interested persons have been afforded an opportunity to participate 
    in the making of this amendment. Due consideration has been given to 
    the comments received.
        Two commenters support the proposal.
        One commenter requests that the proposal be withdrawn. This 
    commenter, International Aero Engines, states that its records indicate 
    that all engines installed on affected airplanes worldwide have been 
    modified already in accordance with the procedures that were proposed 
    in the notice. In light of this, the commenter considers that an AD to 
    require modification of the engines is unnecessary.
        The FAA does not concur. This commenter did not provide specific 
    data to the FAA to verify that all affected airplanes have been 
    modified. Without that data, this AD is necessary to ensure that all 
    airplanes currently on the U.S. Register, as well as any airplane later 
    imported and placed on the U.S. Register, are modified in accordance 
    with the AD. Further, it is the responsibility of the FAA to ensure 
    that the configuration that resulted in the addressed unsafe condition 
    is corrected and is not reintroduced into the U.S. fleet either through 
    production, repair, or overhaul; this AD is the appropriate vehicle for 
    doing that.
        After careful review of the available data, including the comments 
    noted above, the FAA has determined that air safety and the public 
    interest require the adoption of the rule as proposed.
        The FAA estimates that 108 airplanes of U.S. registry will be 
    affected by this AD, that it will take approximately 2 work hours per 
    airplane to accomplish the required actions, and that the average labor 
    rate is $60 per work hour. Required parts will be supplied by the 
    manufacturer at no cost to operators. Based on these figures, the cost 
    impact of the AD on U.S. operators is estimated to be $12,960, or $120 
    per airplane.
        The cost impact figure discussed above is based on assumptions that 
    no operator has yet accomplished any of the requirements of this AD 
    action, and that no operator would accomplish those actions in the 
    future if this AD were not adopted.
        The regulations adopted herein will not have substantial direct 
    effects 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. Therefore, in 
    accordance with Executive Order 12612, it is determined that this final 
    rule does not have sufficient federalism implications to warrant the 
    preparation of a Federalism Assessment.
        For the reasons discussed above, I certify that this action (1) is 
    not a ``significant regulatory action'' under Executive Order 12866; 
    (2) is not a ``significant rule'' under 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. A final evaluation has been prepared for this action 
    and it is contained in the Rules Docket. A copy of it may be obtained 
    from the Rules Docket at the location provided under the caption 
    ADDRESSES.
    
    List of Subjects in 14 CFR Part 39
    
        Air transportation, Aircraft, Aviation safety, Incorporation by 
    reference, Safety.
    
    Adoption of the Amendment
    
        Accordingly, pursuant to the authority delegated to me by the 
    Administrator, the Federal Aviation Administration amends part 39 of 
    the Federal Aviation Regulations (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. Section 39.13 is amended by adding the following new 
    airworthiness directive:
    
    96-04-10  Airbus Industrie: Amendment 39-9522. Docket 95-NM-89-AD.
    
    [[Page 6932]]
    
        Applicability: Model A320-231 series airplanes on which Airbus 
    Modification 23929 (reference Airbus Service Bulletin A320-78-1009) 
    has not been installed, certificated in any category.
    
        -Note 1: This AD applies to each airplane identified in the 
    preceding applicability provision, regardless of whether it has been 
    otherwise modified, altered, or repaired in the area subject to the 
    requirements of this AD. For airplanes that have been modified, 
    altered, or repaired so that the performance of the requirements of 
    this AD is affected, the owner/operator must request approval for an 
    alternative method of compliance in accordance with paragraph (b) of 
    this AD. The request should include an assessment of the effect of 
    the modification, alteration, or repair on the unsafe condition 
    addressed by this AD; and, if the unsafe condition has not been 
    eliminated, the request should include specific proposed actions to 
    address it.
    
        Compliance: Required as indicated, unless accomplished 
    previously.
        To prevent propagation of a fire through a gap (opening) in the 
    fire wall as a result of an improperly sealed fire wall in the event 
    of an engine fire, accomplish the following:
        (a) Within 9 months after the effective date of this AD, modify 
    the fire wall of each engine in accordance with Airbus Service 
    Bulletin A320-78-1009, dated October 14, 1993.
        (b) An alternative method of compliance or adjustment of the 
    compliance time that provides an acceptable level of safety may be 
    used if approved by the Manager, Standardization Branch, ANM-113, 
    FAA, Transport Airplane Directorate. Operators shall submit their 
    requests through an appropriate FAA Principal Maintenance Inspector, 
    who may add comments and then send it to the Manager, 
    Standardization Branch, ANM-113.
    
        Note 2: Information concerning the existence of approved 
    alternative methods of compliance with this AD, if any, may be 
    obtained from the Standardization Branch, ANM-113.
    
        (c) Special flight permits may be issued in accordance with 
    sections 21.197 and 21.199 of the Federal Aviation Regulations (14 
    CFR 21.197 and 21.199) to operate the airplane to a location where 
    the requirements of this AD can be accomplished.
        (d) The modification shall be done in accordance with Airbus 
    Service Bulletin A320-78-1009, dated October 14, 1993. This 
    incorporation by reference was approved by the Director of the 
    Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 
    51. Copies may be obtained from Airbus Industrie, 1 Rond Point 
    Maurice Bellonte, 31707 Blagnac Cedex, France. Copies may be 
    inspected at the FAA, Transport Airplane Directorate, 1601 Lind 
    Avenue SW., Renton, Washington; or at the Office of the Federal 
    Register, 800 North Capitol Street NW., suite 700, Washington, DC.
        (e) This amendment becomes effective on March 25, 1996.
    
        Issued in Renton, Washington, on February 14, 1996.
    Darrell M. Pederson,
    Acting Manager, Transport Airplane Directorate, Aircraft Certification 
    Service.
    [FR Doc. 96-3836 Filed 2-22-96; 8:45 am]
    BILLING CODE 4910-13-U
    
    

Document Information

Effective Date:
3/25/1996
Published:
02/23/1996
Department:
Transportation Department
Entry Type:
Rule
Action:
Final rule.
Document Number:
96-3836
Dates:
Effective March 25, 1996.
Pages:
6931-6932 (2 pages)
Docket Numbers:
Docket No. 95-NM-89-AD, Amendment 39-9522, AD 96-04-10
PDF File:
96-3836.pdf
CFR: (1)
14 CFR 39.13