Airworthiness Directives; Bombardier-Rotax GmbH 914 F Series Reciprocating Engines, 52932-52934 [E8-21282]

Download as PDF 52932 Proposed Rules Federal Register Vol. 73, No. 178 Friday, September 12, 2008 This section of the FEDERAL REGISTER contains notices to the public of the proposed issuance of rules and regulations. The purpose of these notices is to give interested persons an opportunity to participate in the rule making prior to the adoption of the final rules. DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2008–0842; Directorate Identifier 2008–NE–24–AD] RIN 2120–AA64 Airworthiness Directives; BombardierRotax GmbH 914 F Series Reciprocating Engines Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: 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: SUMMARY: ebenthall on PROD1PC60 with PROPOSALS Occurrence of cracks in the exhaust muffler in the area of the exhaust bottom and exhaust flange were reported, which could lead to toxic contamination inside the cabin. We are proposing this AD to prevent carbon monoxide contamination in the cockpit, which can adversely affect the pilot, and possibly result in loss of control of the aircraft. DATES: We must receive comments on this proposed AD by October 14, 2008. ADDRESSES: You may send comments by any of the following methods: • Federal eRulemaking Portal: Go to https://www.regulations.gov and follow the instructions for sending your comments electronically. • Mail: Docket Management Facility, U.S. Department of Transportation, 1200 New Jersey Avenue, SE., West Building Ground Floor, Room W12–140, Washington, DC 20590–0001. • Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. VerDate Aug<31>2005 14:20 Sep 11, 2008 Jkt 214001 • Fax: (202) 493–2251. Examining the AD Docket You may examine the AD docket on the Internet at https:// 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 this proposed AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Operations office (telephone (800) 647–5527) is the same as the Mail address provided in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Richard Woldan, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park; Burlington, MA 01803; telephone (781) 238–7136; fax (781) 238–7199. SUPPLEMENTARY INFORMATION: 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–2008–0842; Directorate Identifier 2008–NE–24–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 based on those comments. We will post all comments we receive, without change, to https:// www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact with FAA personnel concerning this proposed AD. Using the search function of the Web site, anyone can find and read the comments in any of our dockets, including, if provided, the name of the individual who sent the comment (or signed the comment on behalf of an association, business, labor union, etc.). You may review the DOT’s complete Privacy Act Statement in the Federal Register published on April 11, 2000 (65 FR 19477–78). PO 00000 Frm 00001 Fmt 4702 Sfmt 4702 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 2006–0127, dated May 18, 2006 (referred to after this as ‘‘the MCAI’’), to correct an unsafe condition for the specified products. The MCAI states: Occurrence of cracks in the exhaust muffler in the area of the exhaust bottom and exhaust flange were reported, which could lead to toxic contamination inside the cabin. You may obtain further information by examining the MCAI in the AD docket. Relevant Service Information Bombardier-Rotax GmbH has issued Service Bulletin SB–914–028 R1, dated November 8, 2004. The actions described in this service information are intended to correct the unsafe condition identified in the MCAI. FAA’s Determination and Requirements of This Proposed AD This product has been approved by the aviation authority of Austria, and is approved for operation in the United States. Pursuant to our bilateral agreement with Austria, 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 Austria and determined the unsafe condition exists and is likely to exist or develop on other products of the same type design. Costs of Compliance Based on the service information, we estimate that this proposed AD would affect about 75 products of U.S. registry. We also estimate that it would take about 2 work-hours per product to comply with this proposed AD. The average labor rate is $80 per work-hour. Required parts would cost about $1,674 per product. Based on these figures, we estimate the cost of the proposed AD on U.S. operators to be $137,550. Our cost estimate is exclusive of possible warranty coverage. 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: E:\FR\FM\12SEP1.SGM 12SEP1 Federal Register / Vol. 73, No. 178 / Friday, September 12, 2008 / Proposed Rules 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 52933 Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new AD: Bombardier-Rotax GmbH: (Formerly Rotax GmbH): Docket No. FAA–2008–0842; Directorate Identifier 2008–NE–24–AD. Comments Due Date (a) We must receive comments by October 14, 2008. Affected Airworthiness Directives (ADs) (b) None. Applicability (c) This AD applies to Bombardier-Rotax GmbH 914 F series reciprocating engines with engine exhaust muffler, part number (P/N) 979402 or 979404, with serial numbers (SNs) listed in Table 1 of this AD, installed. These engines are installed on, but not limited to, Aeromot-Industria Mecanico Metalurgica, AMT–300 (Turbo Ximango Shark), Diamond Aircraft Industries, HK 36 TTS, HK 36 TTC, HK 36 TTC–ECO, and Stemme GmbH & Co. KG, S10–VT series powered sailplanes. 1. The authority citation for part 39 continues to read as follows: TABLE 1—AFFECTED EXHAUST MUFFLERS BY GROUP, P/N, AND SN Group P/N SN (1) A ........................... 979402 ...................... (2) B ........................... 979402 ...................... 02.0001 through 02.0322, 03.0002, 03.0005, 03.0011, 03.0015, 03.0017, 03.0028, 03.0029, 03.0037, 03.0038, 03.0040, 03.0050, 03.0069, 03.0072, 03.0073, 03.0078, 03.0080 through 03.0086, 03.0088 through 03.0090, 03.0092 through 03.0101, 03.0103, and 03.0108. 03.0001, 03.0003, 03.0004, 03.0006, 03.0007 through 03.0010, 03.0012 through 03.0014, 03.0016, 03.0018 through 03.0027, 03.0030 through 03.0036, 03.0039, 03.0041 through 03.0049, 03.0051 through 03.0068, 03.0070, 03.0071, 03.0074 through 03.0077, 03.0079, 03.0087, 03.0091, 03.0102, and 03.0104 through 03.0107. 03.0200 through 04.0799. 979404 ...................... Reason (d) Occurrence of cracks in the exhaust muffler in the area of the exhaust bottom and exhaust flange were reported, which could lead to toxic contamination inside the cabin. We are proposing this AD to prevent carbon monoxide contamination in the cockpit, which can adversely affect the pilot, and possibly result in loss of control of the aircraft. Actions and Compliance (e) You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done. ebenthall on PROD1PC60 with PROPOSALS Initial Visual Inspection Group A Exhaust Mufflers (f) For exhaust mufflers specified in Group A of Table 1 of this AD, within 50 hours of operation after the effective date of this AD, do the following: (1) Perform a visual inspection around the fillet weld of the exhaust inlet flange and around the weld of the exhaust outlet for VerDate Aug<31>2005 14:20 Sep 11, 2008 Jkt 214001 evidence of leakage or cracks. Information on inspecting the exhaust muffler can be found in Bombardier-Rotax GmbH 914 F Service Bulletin SB–914–028 R1, dated November 8, 2004. (2) If you see evidence of an exhaust leak or cracks, replace the exhaust muffler. Group B Exhaust Mufflers (g) For exhaust mufflers specified in Group B of Table 1 of this AD, within 50 hours of operation after the effective date of this AD, do the following: (1) Perform a visual inspection around the weld of the exhaust outlet for evidence of leakage or cracks. Information on inspecting the exhaust muffler can be found in Bombardier-Rotax GmbH 914 F Service Bulletin SB–914–028 R1, dated November 8, 2004. (2) If you see evidence of an exhaust leak or cracks, replace the exhaust muffler. Repetitive Visual Inspections (h) Within 50 hours of operation since the last inspection, perform the actions specified PO 00000 Frm 00002 Fmt 4702 Sfmt 4702 in paragraphs (f)(1) through (f)(2) and (g)(1) through (g)(2) of this AD. FAA AD Differences (i) None. Other FAA AD Provisions (j) Alternative Methods of Compliance (AMOCs): The Manager, Engine Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Related Information (k) Refer to MCAI EASA Airworthiness Directive 2006–0127, dated May 18, 2006, and Bombardier-Rotax GmbH 914 F Service Bulletin SB–914–028 R1, dated November 8, 2004, for related information. (l) Contact Richard Woldan, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803, telephone (781) 238–7136; fax (781) 238–7199, for more information about this AD. E:\FR\FM\12SEP1.SGM 12SEP1 52934 Federal Register / Vol. 73, No. 178 / Friday, September 12, 2008 / Proposed Rules Issued in Burlington, Massachusetts, on September 5, 2008. Peter A. White, Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. E8–21282 Filed 9–11–08; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 71 Proposed Modification of the Asheville, NC, Class C Airspace Area; Public Meeting Federal Aviation Administration (FAA), DOT. ACTION: Notice of meeting. AGENCY: SUMMARY: This notice announces a factfinding informal airspace meeting to solicit information from airspace users and others concerning a plan to modify the Class C airspace area at Asheville, NC. The modification would ensure that arriving aircraft are contained within Class C airspace while flying instrument approaches to runways 16 and 34 at the Asheville Regional Airport. The purpose of the meeting is to provide interested parties an opportunity to present views, recommendations, and comments to be considered by the FAA in developing a proposal. All comments received during the meeting will be considered prior to issuance of a notice of proposed rulemaking. The informal airspace meeting will be held on Tuesday, October 14, 2008, beginning at 6:30 p.m. Comments must be received on or before November 14, 2008. ADDRESSES: The meeting will be held at the O.D. Lacey Griffin Building, 21 Aviation Way, Fletcher, NC 28732. Comments: Send comments on the proposal to Mark Ward, Manager, Operations Support Group, Air Traffic Organization Eastern Service Area, Federal Aviation Administration, P.O. Box 20636, Atlanta, Georgia 30320. FOR FURTHER INFORMATION CONTACT: Grey Pelkey, Manager, Asheville Airport Traffic Control Tower, Asheville Airport, 61 Terminal Drive Suite 2, Fletcher, NC 28732; Telephone (828) 684–0421. SUPPLEMENTARY INFORMATION: ebenthall on PROD1PC60 with PROPOSALS DATES: (b) The meeting will be informal in nature and will be conducted by one or more representatives of the FAA Eastern Service Area. A representative from the FAA will present an informal briefing on the planned modification to the Class C airspace at Asheville, NC. Each participant will be given an opportunity to deliver comments or make a presentation, although a time limit may be imposed. Only comments concerning the plan to modify the Class C airspace area at Asheville, NC, will be accepted. (c) Each person wishing to make a presentation to the FAA panel will be asked to sign in and estimate the amount of time needed for such presentation. This will permit the panel to allocate an appropriate amount of time for each presenter. The meeting will not be adjourned until everyone on the list has had an opportunity to address the panel. (d) Position papers or other handout material relating to the substance of these meetings will be accepted. Participants wishing to submit handout material should present an original and two copies (3 copies total) to the presiding officer. There should be additional copies of each handout available for other attendees. (e) The meeting will not be formally recorded. However, a summary of comments made at the meeting will be filed in the docket. Agenda for the Meeting —Sign-in. —Presentation of Meeting Procedures. —FAA explanation of the proposed Class C modifications. —Public Presentations and Discussions. —Closing Comments. Authority: 49 U.S.C. 106(g), 40103, 40113, 40120; E.O. 10854, 24 FR 9565, 3 CFR, 1959– 1963 Comp., p. 389. Issued in Washington DC, on September 2, 2008. Edith V. Parish, Manager, Airspace and Rules Group. [FR Doc. E8–21216 Filed 9–11–08; 8:45 am] BILLING CODE 4910–13–P Meeting Procedures (a) The meeting will be open to all persons on a space-available basis. There will be no admission fee or other charge to attend and participate. VerDate Aug<31>2005 14:20 Sep 11, 2008 Jkt 214001 PO 00000 Frm 00003 Fmt 4702 Sfmt 4702 DEPARTMENT OF HOMELAND SECURITY Coast Guard 33 CFR Part 117 [Docket No. USCG–2008–0721] RIN 1625 AA09 Drawbridge Operation Regulation; Willamette River, Portland, OR, Schedule Change Coast Guard, DHS. Notice of proposed rulemaking. AGENCY: ACTION: SUMMARY: The Coast Guard proposes to modify the drawbridge operation regulation for the Broadway and Burnside Bridges across the Willamette River, mile 11.7, in Portland, Oregon so that one-hour notice would be required from 8 a.m. to 5 p.m. Monday through Friday and two-hour notice at all other times. The Broadway Bridge would be deleted as a point of contact for upstream vessels, leaving the Hawthorne Bridge as the point of contact for both upstream and downstream travel directions. DATES: Comments and related material must reach the Coast Guard on or before November 12, 2008. ADDRESSES: You may submit comments identified by the Coast Guard docket number USCG–2008–0721 to the Docket Management Facility at the U.S. Department of Transportation. To avoid duplication, please use only one of the following methods: (1) Online: https:// www.regulations.gov. (2) Mail: Docket Management Facility (M–30), U.S. Department of Transportation, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue, SE., Washington, DC 20590– 0001. (3) Hand delivery: Room W12–140 on the Ground Floor of the West Building, 1200 New Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The telephone number is 202–366–9329. (4) Fax: 202–493–2251. FOR FURTHER INFORMATION CONTACT: If you have questions on this proposed rule, call Austin Pratt, Chief, Bridge Section, Waterways Management Branch, 13th Coast Guard District, telephone 206–220–7282. If you have questions on viewing or submitting material to the docket, call Renee V. Wright, Program Manager, Docket Operations, telephone 202–366–9826. SUPPLEMENTARY INFORMATION: E:\FR\FM\12SEP1.SGM 12SEP1

Agencies

[Federal Register Volume 73, Number 178 (Friday, September 12, 2008)]
[Proposed Rules]
[Pages 52932-52934]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-21282]


========================================================================
Proposed Rules
                                                Federal Register
________________________________________________________________________

This section of the FEDERAL REGISTER contains notices to the public of 
the proposed issuance of rules and regulations. The purpose of these 
notices is to give interested persons an opportunity to participate in 
the rule making prior to the adoption of the final rules.

========================================================================


Federal Register / Vol. 73, No. 178 / Friday, September 12, 2008 / 
Proposed Rules

[[Page 52932]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2008-0842; Directorate Identifier 2008-NE-24-AD]
RIN 2120-AA64


Airworthiness Directives; Bombardier-Rotax GmbH 914 F Series 
Reciprocating Engines

AGENCY: Federal Aviation Administration (FAA), 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:

    Occurrence of cracks in the exhaust muffler in the area of the 
exhaust bottom and exhaust flange were reported, which could lead to 
toxic contamination inside the cabin.

We are proposing this AD to prevent carbon monoxide contamination in 
the cockpit, which can adversely affect the pilot, and possibly result 
in loss of control of the aircraft.

DATES: We must receive comments on this proposed AD by October 14, 
2008.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Portal: Go to https://
www.regulations.gov and follow the instructions for sending your 
comments electronically.
     Mail: Docket Management Facility, U.S. Department of 
Transportation, 1200 New Jersey Avenue, SE., West Building Ground 
Floor, Room W12-140, Washington, DC 20590-0001.
     Hand Delivery: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
     Fax: (202) 493-2251.

Examining the AD Docket

    You may examine the AD docket on the Internet at https://
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 this proposed AD, the regulatory 
evaluation, any comments received, and other information. The street 
address for the Docket Operations office (telephone (800) 647-5527) is 
the same as the Mail address provided in the ADDRESSES section. 
Comments will be available in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Richard Woldan, Aerospace Engineer, 
Engine Certification Office, FAA, Engine and Propeller Directorate, 12 
New England Executive Park; Burlington, MA 01803; telephone (781) 238-
7136; fax (781) 238-7199.

SUPPLEMENTARY INFORMATION:

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-2008-0842; 
Directorate Identifier 2008-NE-24-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 based on those comments.
    We will post all comments we receive, without change, to https://
www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact 
with FAA personnel concerning this proposed AD. Using the search 
function of the Web site, anyone can find and read the comments in any 
of our dockets, including, if provided, the name of the individual who 
sent the comment (or signed the comment on behalf of an association, 
business, labor union, etc.). You may review the DOT's complete Privacy 
Act Statement in the Federal Register published on April 11, 2000 (65 
FR 19477-78).

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 2006-0127, dated May 18, 2006 (referred to 
after this as ``the MCAI''), to correct an unsafe condition for the 
specified products. The MCAI states:

    Occurrence of cracks in the exhaust muffler in the area of the 
exhaust bottom and exhaust flange were reported, which could lead to 
toxic contamination inside the cabin.

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

Relevant Service Information

    Bombardier-Rotax GmbH has issued Service Bulletin SB-914-028 R1, 
dated November 8, 2004. The actions described in this service 
information are intended to correct the unsafe condition identified in 
the MCAI.

FAA's Determination and Requirements of This Proposed AD

    This product has been approved by the aviation authority of 
Austria, and is approved for operation in the United States. Pursuant 
to our bilateral agreement with Austria, 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 Austria and determined the unsafe condition 
exists and is likely to exist or develop on other products of the same 
type design.

Costs of Compliance

    Based on the service information, we estimate that this proposed AD 
would affect about 75 products of U.S. registry. We also estimate that 
it would take about 2 work-hours per product to comply with this 
proposed AD. The average labor rate is $80 per work-hour. Required 
parts would cost about $1,674 per product. Based on these figures, we 
estimate the cost of the proposed AD on U.S. operators to be $137,550. 
Our cost estimate is exclusive of possible warranty coverage.

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:

[[Page 52933]]

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.


Sec.  39.13  [Amended]

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

Bombardier-Rotax GmbH: (Formerly Rotax GmbH): Docket No. FAA-2008-
0842; Directorate Identifier 2008-NE-24-AD.

Comments Due Date

    (a) We must receive comments by October 14, 2008.

Affected Airworthiness Directives (ADs)

    (b) None.

Applicability

    (c) This AD applies to Bombardier-Rotax GmbH 914 F series 
reciprocating engines with engine exhaust muffler, part number (P/N) 
979402 or 979404, with serial numbers (SNs) listed in Table 1 of 
this AD, installed. These engines are installed on, but not limited 
to, Aeromot-Industria Mecanico Metalurgica, AMT-300 (Turbo Ximango 
Shark), Diamond Aircraft Industries, HK 36 TTS, HK 36 TTC, HK 36 
TTC-ECO, and Stemme GmbH & Co. KG, S10-VT series powered sailplanes.

                            Table 1--Affected Exhaust Mufflers by Group, P/N, and SN
----------------------------------------------------------------------------------------------------------------
                 Group                                    P/N                                  SN
----------------------------------------------------------------------------------------------------------------
(1) A.................................  979402................................  02.0001 through 02.0322,
                                                                                 03.0002, 03.0005, 03.0011,
                                                                                 03.0015, 03.0017, 03.0028,
                                                                                 03.0029, 03.0037, 03.0038,
                                                                                 03.0040, 03.0050, 03.0069,
                                                                                 03.0072, 03.0073, 03.0078,
                                                                                 03.0080 through 03.0086,
                                                                                 03.0088 through 03.0090,
                                                                                 03.0092 through 03.0101,
                                                                                 03.0103, and 03.0108.
(2) B.................................  979402................................  03.0001, 03.0003, 03.0004,
                                                                                 03.0006, 03.0007 through
                                                                                 03.0010, 03.0012 through
                                                                                 03.0014, 03.0016, 03.0018
                                                                                 through 03.0027, 03.0030
                                                                                 through 03.0036, 03.0039,
                                                                                 03.0041 through 03.0049,
                                                                                 03.0051 through 03.0068,
                                                                                 03.0070, 03.0071, 03.0074
                                                                                 through 03.0077, 03.0079,
                                                                                 03.0087, 03.0091, 03.0102, and
                                                                                 03.0104 through 03.0107.
                                        979404................................  03.0200 through 04.0799.
----------------------------------------------------------------------------------------------------------------

Reason

    (d) Occurrence of cracks in the exhaust muffler in the area of 
the exhaust bottom and exhaust flange were reported, which could 
lead to toxic contamination inside the cabin.
    We are proposing this AD to prevent carbon monoxide 
contamination in the cockpit, which can adversely affect the pilot, 
and possibly result in loss of control of the aircraft.

Actions and Compliance

    (e) You are responsible for having the actions required by this 
AD performed within the compliance times specified unless the 
actions have already been done.

Initial Visual Inspection

Group A Exhaust Mufflers

    (f) For exhaust mufflers specified in Group A of Table 1 of this 
AD, within 50 hours of operation after the effective date of this 
AD, do the following:
    (1) Perform a visual inspection around the fillet weld of the 
exhaust inlet flange and around the weld of the exhaust outlet for 
evidence of leakage or cracks. Information on inspecting the exhaust 
muffler can be found in Bombardier-Rotax GmbH 914 F Service Bulletin 
SB-914-028 R1, dated November 8, 2004.
    (2) If you see evidence of an exhaust leak or cracks, replace 
the exhaust muffler.

Group B Exhaust Mufflers

    (g) For exhaust mufflers specified in Group B of Table 1 of this 
AD, within 50 hours of operation after the effective date of this 
AD, do the following:
    (1) Perform a visual inspection around the weld of the exhaust 
outlet for evidence of leakage or cracks. Information on inspecting 
the exhaust muffler can be found in Bombardier-Rotax GmbH 914 F 
Service Bulletin SB-914-028 R1, dated November 8, 2004.
    (2) If you see evidence of an exhaust leak or cracks, replace 
the exhaust muffler.

Repetitive Visual Inspections

    (h) Within 50 hours of operation since the last inspection, 
perform the actions specified in paragraphs (f)(1) through (f)(2) 
and (g)(1) through (g)(2) of this AD.

FAA AD Differences

    (i) None.

Other FAA AD Provisions

    (j) Alternative Methods of Compliance (AMOCs): The Manager, 
Engine Certification Office, FAA, has the authority to approve AMOCs 
for this AD, if requested using the procedures found in 14 CFR 
39.19.

Related Information

    (k) Refer to MCAI EASA Airworthiness Directive 2006-0127, dated 
May 18, 2006, and Bombardier-Rotax GmbH 914 F Service Bulletin SB-
914-028 R1, dated November 8, 2004, for related information.
    (l) Contact Richard Woldan, Aerospace Engineer, Engine 
Certification Office, FAA, Engine and Propeller Directorate, 12 New 
England Executive Park, Burlington, MA 01803, telephone (781) 238-
7136; fax (781) 238-7199, for more information about this AD.


[[Page 52934]]


    Issued in Burlington, Massachusetts, on September 5, 2008.
Peter A. White,
Assistant Manager, Engine and Propeller Directorate, Aircraft 
Certification Service.
[FR Doc. E8-21282 Filed 9-11-08; 8:45 am]
BILLING CODE 4910-13-P
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