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CFR Citation: 14 CFR Part 39

Docket ID: [Docket No. FAA-2008-0527; Directorate Identifier 2008-CE-027-AD; Amendment 39-15520; AD 2008-10-13]

RIN ID: RIN 2120-AA64

NOTICE: RULES

ACTION: Airworthiness Directives:

DOCUMENT ACTION: Final rule; request for comments.

SUBJECT CATEGORY: Airworthiness Directives; EADS SOCATA Model TBM 700 Airplanes

DATES: This AD becomes effective May 29, 2008.

On May 29, 2008, the Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD.

We must receive comments on this AD by June 9, 2008.

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

A rupture of the alternator and vapour cycle cooling system pulley drive assembly has reportedly been found. Such a failure could lead to the loss of the alternator and vapour cycle cooling systems and could also cause mechanical damage inside the powerplant compartment.
This AD requires actions that are intended to address the unsafe condition described in the MCAI.

SUMMARY: EADS SOCATA Model TBM 700 Airplanes,

SUPPLEMENTAL INFORMATION

The European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community, has issued EASA AD No.: 20080067E, dated April 3, 2008 (referred to after this as ``the MCAI''), to correct an unsafe condition for the specified products. The MCAI states:

A rupture of the alternator and vapour cycle cooling system pulley drive assembly has reportedly been found. Such a failure could lead to the loss of the alternator and vapour cycle cooling systems and could also cause mechanical damage inside the powerplant compartment.

To address this condition, AD 20080063E had been published to require a check of the pulley drive assembly for leakage and, as an interim action, removal of the compressor drive belt from the assembly, and adoption of a new operational procedure to keep the airconditioning system deactivated.

This AD retains the requirements of AD 20080063E which is superseded, introduces a mandatory terminating action which consists in replacing the original pulley drive assembly by a new one of an improved designcorresponding to the EADS SOCATA modification MOD 70023121that permits reinstallation of the compressor drive belt.
The MCAI requires you to deactivate the air conditioning system, inspect the pulley drive assembly for leaks, and replace the pulley drive assembly if leaks are found.

You may obtain further information by examining the MCAI in the AD docket.

Relevant Service Information

EADS SOCATA has issued Mandatory Service Bulletin SB 70156, Amendment 1, dated March 2008. The actions described in this service information are intended to correct the unsafe condition identified in the MCAI.

FAA's Determination and Requirements of the 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 this State of Design Authority, they have notified us of the unsafe condition described in the MCAI and service information referenced above. We are issuing 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.

The MCAI and the service information require replacement of the pulley drive assembly part number (P/N) T700G215504900000 with the new P/N T700G215505710000 and reinstallation of the compressor drive belt by no later than March 31, 2009. This AD is considered an interim action because we are only mandating this replacement if a leak is found. The Administrative Procedure Act does not permit the FAA to ``bootstrap'' a longterm requirement into an urgent safety of flight action where the rule becomes effective at the same time the public has the opportunity to comment. The shortterm action and the longterm action are analyzed separately for justification to bypass prior public notice.

After issuing this AD, we may initiate further AD action (notice of proposed rulemaking followed by a final rule) to require such a terminating action.
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 have also required 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 AD. These requirements take precedence over those copied from the MCAI.

FAA's Determination of the Effective Date

An unsafe condition exists that requires the immediate adoption of this AD. The FAA has found that the risk to the flying public justifies waiving notice and comment prior to adoption of this rule because a rupture of the alternator and vapour cycle cooling system pulley drive assembly has been reported. Such a failure could lead to the loss of the alternator and vapor cycle cooling systems and could cause mechanical damage inside the powerplant compartment.

Therefore, we determined that notice and opportunity for public comment before issuing this AD are impracticable and that good cause exists for making this amendment effective in fewer than 30 days. Comments Invited

This AD is a final rule that involves requirements affecting flight safety, and we did not precede it by notice and opportunity for public comment. We invite you to send any written relevant data, views, or arguments about this AD. Send your comments to an address listed under the ADDRESSES section. Include ``Docket No. FAA20080527; Directorate Identifier 2008CE027
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AD'' at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this AD. We will consider all comments received by the closing date and may amend this AD because of those comments.

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

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 that this AD: (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.

We prepared a regulatory evaluation of the estimated costs to comply with this AD and placed it in the AD docket.

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 39AIRWORTHINESS 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: 20081013 EADS SOCATA: Amendment 3915520; Docket No. FAA2008 0527; Directorate Identifier 2008CE027AD.
Effective Date
(a) This airworthiness directive (AD) becomes effective May 29, 2008.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Models TBM 700 airplanes, serial numbers 434 through 455, certificated in any category.
Subject
(d) Air Transport Association of America (ATA) Code 24: Electric Power.
Reason
(e) The mandatory continuing airworthiness information (MCAI) states:

A rupture of the alternator and vapour cycle cooling system pulley drive assembly has reportedly been found. Such a failure could lead to the loss of the alternator and vapour cycle cooling systems and could also cause mechanical damage inside the powerplant compartment.

To address this condition, AD 20080063E had been published to require a check of the pulley drive assembly for leakage and, as an interim action, removal of the compressor drive belt from the assembly, and adoption of a new operational procedure to keep the airconditioning system deactivated.

This AD retains the requirements of AD 20080063E which is superseded, introduces a mandatory terminating action which consists in replacing the original pulley drive assembly by a new one of an improved designcorresponding to the EADS SOCATA modification MOD 70023121that permits reinstallation of the compressor drive belt.
The MCAI requires you to deactivate the air conditioning system, inspect the pulley drive assembly for leaks, and replace the pulley drive assembly if leaks are found.
Actions and Compliance
(f) Unless already done, before further flight after May 29, 2008 (the effective date of this AD), do the following actions: (1) Position to ``OFF'' the airconditioning ``AIR COND'' switch.
(2) Check for oil leakage in the pulley drive assembly by following EADS SOCATA Service Bulletin (SB) No. 70156 Amendment 1, dated March 2008.
(3) If any leak is found, before further flight, replace the pulley drive assembly part number (P/N) T700G215504900000 with P/N T700G215505710000 following EADS SOCATA Service Bulletin (SB) No. 70156 Amendment 1, dated March 2008.
(4) If no leak is found, before further flight, remove the compressor drive belt from the pulley drive assembly following either EADS SOCATA Service Bulletin (SB) No. 70156, original issue; or EADS SOCATA Service Bulletin (SB) No. 70156, Amendment 1; both dated March 2008.
(5) The airconditioning ``AIR COND'' switch must be in the ``OFF'' position and the compressor drive belt must remain removed until the pulley drive assembly part number (P/N) T700G215504900000 is replaced with P/N T700G215505710000 following EADS SOCATA Service Bulletin (SB) No. 70156 Amendment 1, dated March 2008. This replacement must be done before further flight if any leak is found and may be done at any time as terminating action to this AD. FAA AD Differences

Note: This AD differs from the MCAI and/or service information as follows:
(1) The MCAI and the service information require replacement of the pulley drive assembly part number (P/N) T700G215504900000 with the improved design P/N T700G215505710000 and reinstallation of the compressor drive belt by no later than March 31, 2009.
(2) This AD is considered an interim action because we are only mandating this replacement if a leak is found. The Administrative Procedure Act does not permit the FAA to ``bootstrap'' a longterm requirement into an urgent safety of flight action where the rule becomes effective at the same time the public has the opportunity to comment. The shortterm action and the longterm action are analyzed separately for justification to bypass prior public notice. (3) After issuing this AD, we may initiate further AD action (notice of proposed rulemaking followed by a final rule) to require the replacement of the pulley drive assembly part number (P/N) T700G215504900000 with the new P/N T700G215505710000, and
reinstallation of the compressor drive belt as a terminating action. Appropriate credit would be given for the initial actions done under this AD.
Other FAA AD Provisions
(g) The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, Standards Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to
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FOR FURTHER INFORMATION CONTACT Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 3294119; fax: (816) 3294090.