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CFR Citation: 14 CFR Part 39

Docket ID: [Docket No. FAA-2008-0327; Directorate Identifier 2007-SW-21-AD]

RIN ID: RIN 2120-AA64

NOTICE: PROPOSED RULES

ACTION: Airworthiness Directives:

DOCUMENT ACTION: Notice of proposed rulemaking (NPRM).

SUBJECT CATEGORY: Airworthiness Directives; Agusta S.p.a. Model A109E and A119 Helicopters

DATES: We must receive comments on this proposed AD by April 18, 2008.

DOCUMENT SUMMARY: We propose to adopt a new airworthiness directive (AD) for the specified helicopters. This proposed AD results from a mandatory continuing airworthiness information (MCAI) AD originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The European Aviation Safety Agency (EASA), the Technical Agent for Italy, with which we have a bilateral agreement, states in the MCAI:

Some cases of interference between the hydraulic pipe, P/N 109 076165103, and the tail rotor control rod assembly have been detected on Model A109E helicopters.

The interference, if not corrected, could damage the hydraulic pipes and lead to the loss of the hydraulic system No. 1 in flight. This AD * * * is issued to extend the same mandatory corrective actions to A119 model due to its design similarity with A109E. The proposed AD would require actions that are intended to address this unsafe condition.

SUMMARY: Agusta S.p.a. Model A109E and A119 Helicopters,

SUPPLEMENTAL INFORMATION

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 decisionmaking 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. FAA20080327; Directorate Identifier 2007SW21AD'' 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 based on 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 proposed AD.

Discussion

The European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community, has issued an MCAI in the form of EASA AD No. 20070231, dated August 23, 2007 (referred to after this as ``the MCAI''), to correct an unsafe condition for these Italiancertificated products. The MCAI states:

Some cases of interference between the hydraulic pipe, P/N 109 076165103, and the tail rotor control rod assembly have been detected on Model A109E helicopters.

The interference, if not corrected, could damage the hydraulic pipes and lead to the loss of the hydraulic system No. 1 in flight. This AD * * * is issued to extend the same mandatory corrective actions to A119 model due to its design similarity with A109E. You may obtain further information by examining the MCAI and service information in the AD docket.

Relevant Service Information

Agusta has issued Bollettino Tecnico (BT) No. 109EP73, dated December 4, 2006, applicable to Model A109E helicopters, and BT No. 11922, dated July 11, 2007, applicable to Model A119 helicopters. The actions described in the MCAI are intended to correct the same unsafe condition as that identified in the service information.

FAA's Determination and Requirements of This Proposed AD

These model helicopters have been approved by the aviation authority of Italy, and are approved for operation in the United States. Pursuant to our bilateral agreement with this State of Design Authority, we have been notified of the unsafe condition described in the MCAI and service information. We are proposing this AD because we evaluated all pertinent information and determined an unsafe condition exists and is likely to exist or develop on other products of these same type designs.
Differences Between This AD and the MCAI or Service Information

We have reviewed the MCAI and related service information and, in [[Page 14734]]
general, agree with their substance. However, this AD requires replacement of hydraulic lines within 180 days, unless previously accomplished, instead of replacing the hydraulic lines on the dates specified in the MCAI. In making these changes, we do not intend to differ substantively from the information provided in the MCAI and related service information. These differences are highlighted in the ``Differences Between the FAA AD and the MCAI'' section in the proposed AD.

Costs of Compliance

We estimate that this proposed AD would affect about 78 helicopters of U.S. registry and that it would take about 2 workhours per helicopter to inspect and 16 workhours per helicopter to replace the hydraulic lines. The average labor rate is $80 per workhour. Required parts would cost about $562 per helicopter, assuming these parts are no longer under warranty. However, because the service information lists these parts as covered under warranty, we have assumed that there will be no charge for these parts.

Therefore, 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 $112,320, or $1,440 per helicopter.

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 an economic 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 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: Agusta. S.p.a.: Docket No. FAA20080327; Directorate Identifier 2007SW21AD.
Comments Due Date
(a) We must receive comments by April 18, 2008.
Other Affected ADs
(b) None.
Applicability
(c) This AD applies to Agusta S.p.a. Model A109E and A119 helicopters, with hydraulic lines, part number (P/N) 109076164103 or P/N 109076165103, installed, certificated in any category. Reason
(d) The mandatory continuing airworthiness information (MCAI) states:

Some cases of interference between the hydraulic pipe, P/N 109 076165103, and the tail rotor control rod assembly have been detected on Model A109E helicopters.

The interference, if not corrected, could damage the hydraulic pipes and lead to the loss of the hydraulic system No. 1 in flight. This AD * * * is issued to extend the same mandatory corrective actions to A119 model due to its design similarity with A109E. Actions and Compliance
(e) Within the next 50 hours timeinservice (TIS), unless accomplished previously, and thereafter at intervals not to exceed 100 hours TIS:
(1) Inspect for interference between the hydraulic lines, P/N 109076164103 and P/N 109076165103, and the tail rotor control rod assembly, P/N 10900320141, in accordance with the Compliance Instructions, Part I, paragraph 3, of Agusta Bollettino Tecnico (BT) No. 109EP73, dated December 4, 2006 (BT A109E), which is applicable to Model A109E helicopters, or BT 11922, dated July 11, 2007 (BT 11922), which is applicable to Model A119 helicopters.
(2) If you find interference between the hydraulic lines and the tail rotor control rod assembly, replace the hydraulic lines, P/N 109076164103 and P/N 109076165103, with hydraulic lines, P/N 109076396101 and P/N 109076397101, respectively, in accordance with the Compliance Instructions, Part II of BT A109E or BT 11922, whichever is applicable to your model helicopter.
(f) Within 180 days, replace hydraulic lines, P/N 109076164 103 and P/N 109076165103, with hydraulic lines, P/N 109076396 101 and P/N 109076397101, respectively, in accordance with the Compliance Instructions, Part II, of BT A109E or BT 11922, whichever is applicable to your model helicopter.
Differences Between the FAA AD and the MCAI
(g) This AD requires replacement of hydraulic lines, P/N 109 076164103 and P/N 109076165103, within 180 days, unless
previously accomplished, instead of replacing the hydraulic lines on the dates specified in the MCAI.
Subject
(h) Air Transport Association of America (ATA) Code 2910Main Hydraulic System.
Other Information
(i) The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, Regulations and Policy Group, 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: Uday Garadi, Aviation Safety Engineer, FAA, Rotorcraft Directorate, Regulations and Guidance Group, Fort Worth, Texas 761930110, telephone (817) 2225123, fax (817) 2225961.
(2) Airworthy Product: Use only FAAapproved corrective actions. Corrective actions are considered FAAapproved if they are approved by the State of Design Authority (or their delegated agent) if the State of Design has an appropriate bilateral agreement with the United States. 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)
[[Page 14735]]
has approved the information collection requirements and has assigned OMB Control Number 21200056.
Related Information
(j) MCAI EASA AD No 20070231, dated August 23, 2007 contains related information.

Issued in Fort Worth, Texas, on March 10, 2008.
Mark R. Schilling,
Acting Manager, Rotorcraft Directorate, Aircraft Certification Service. [FR Doc. E85495 Filed 31808; 8:45 am]
BILLING CODE 491013P

FOR FURTHER INFORMATION CONTACT Uday Garadi, Aviation Safety Engineer, FAA, Rotorcraft Directorate, Regulations and Guidance Group, Fort Worth, Texas 761930110, telephone (817) 2225123, fax (817) 2225961.