
[Federal Register: April 19, 2010 (Volume 75, Number 74)]
[Rules and Regulations]               
[Page 20265-20268]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr19ap10-4]                         

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2009-0329; Directorate Identifier 2009-CE-020-AD; 
Amendment 39-16264; AD 2009-08-05 R1]
RIN 2120-AA64

 
Airworthiness Directives; Liberty Aerospace Incorporated Model 
XL-2 Airplanes

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

ACTION: Final rule.

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SUMMARY: We are correcting the address, telephone, and fax information 
for the reporting requirement in Airworthiness Directive (AD) 2009-08-
05, which applies to certain Liberty Aerospace Incorporated Model XL-2 
airplanes. AD 2009-08-05 currently requires repetitively inspecting the 
exhaust muffler for cracks, replacing the exhaust muffler when cracks 
are found, and reporting the results of the inspections to the FAA. 
Since AD 2009-08-05 became effective, the FAA's Atlanta Aircraft 
Certification Office (ACO) moved, which has caused the office personnel 
problems in receiving fax and mailed copies of the inspection result 
reports. This document corrects the mailing address, telephone number, 
and fax information of the Atlanta ACO.

DATES: This final rule is effective April 19, 2010. The compliance date 
of this AD is April 20, 2009, which is the same as the effective date 
of AD 2009-08-05.
    As of April 20, 2009 (74 FR 16117, April 9, 2009), the Director of 
the Federal Register approved the incorporation by reference of Liberty 
Aerospace, Inc. Service Document Critical Service Bulletin (CSB) CSB-
09-001, Revision Level B, Revised on March 18, 2009.

ADDRESSES: You may examine the AD docket on the Internet at http://
www.regulations.gov or in person at Document Management Facility, U.S. 
Department of Transportation, Docket Operations, M-30, West Building 
Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC 
20590.

FOR FURTHER INFORMATION CONTACT: 


[[Page 20266]]


--Corey Spiegel, Aerospace Engineer, Atlanta Aircraft Certification 
Office, 1701 Columbia Avenue, College Park, Georgia 30337; telephone: 
(404) 474-5574; facsimile: (404) 474-5606; e[dash]mail: 
corey.spiegel@faa.gov; or
--Cindy Lorenzen, Aerospace Engineer, Atlanta Aircraft Certification 
Office, 1701 Columbia Avenue, College Park, Georgia 30337; telephone: 
(404) 474-5524; facsimile: (404) 474-5606; e[dash]mail: 
cindy.lorenzen@faa.gov.

SUPPLEMENTARY INFORMATION:

Discussion

    On April 3, 2009, we issued AD 2009-08-05, Amendment 39-15878 (74 
FR 16117, April 9, 2009), to require repetitively inspecting the 
exhaust muffler for cracks, replacing the exhaust muffler when cracks 
are found, and reporting the results of the inspections to the FAA.
    Since AD 2009-08-05 became effective, the FAA's Atlanta Aircraft 
Certification Office (ACO) moved, which has caused the office personnel 
problems in receiving fax and mailed copies of the inspection result 
reports.
    Consequently, the FAA sees a need to correct the mailing address, 
telephone number, and fax information of the Atlanta ACO in AD 2009-08-
05 to assure that the inspection results are received and reviewed to 
help assure the continued operational safety of the affected airplanes. 
Thus, the FAA is revising the AD to incorporate the language discussed 
above and to add the amendment to section 39.13 of the Federal Aviation 
Regulations (14 CFR 39.13).
    Since this action only corrects the address, telephone number, and 
fax information for the reporting requirement and does not require any 
additional actions over that originally required by AD 2009-08-05, it 
has no adverse economic impact and imposes no additional burden on any 
person than was already required. Therefore, the FAA has determined 
that prior notice and opportunity for public comment are unnecessary.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of the Amendment

0
Accordingly, under the authority delegated to me by the Administrator, 
the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
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]

0
2. The FAA amends Sec.  39.13 by removing Airworthiness Directive (AD) 
2009-08-05, Amendment 39-15878 (74 FR 16117, April 9, 2009), and adding 
the following new AD:

2009-08-05 R1 Liberty Aerospace Incorporated: Amendment 39-16264; 
Docket No. FAA-2009-0329; Directorate Identifier 2009-CE-020-AD.

Effective Date

    (a) This final rule is effective April 19, 2010. The compliance 
date of this AD is April 20, 2009, which is the same as the 
effective date of AD 2009-08-05.

Affected ADs

    (b) This AD revises AD 2009-08-05.

Applicability

    (c) This AD applies to Model XL-2 airplanes, serial numbers 
0007, 0009, and subsequent, that are certificated in any category.

Unsafe Condition

    (d) This AD is the result of reports that eight cracks have been 
found in the exhaust muffler during maintenance and service 
inspections. We are issuing this AD to detect and correct cracks in 
the exhaust muffler, which could result in carbon monoxide entering 
the cabin heating system. This condition could lead to 
incapacitation of the pilot.

Compliance

    (e) To address this problem, you must do the following, unless 
already done:

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               Actions                             Compliance                            Procedures
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(1) Inspect the following:            Initially inspect within the next 10  Follow Liberty Aerospace, Inc.
(i) The exhaust muffler for cracks.    hours time-in-service (TIS) after     Service Document Critical Service
 There are two different exhaust       April 20, 2009 (the effective date    Bulletin (CSB) CSB-09-001, Revision
 systems available for the affected    of AD 2009-08-05) or at the next      Level B, Revised on March 18, 2009.
 airplanes. They are:                  annual inspection, whichever occurs
(A) Standard exhaust system, part      first. Repetitively inspect the
 number (P/N) DEL200201-002 that       exhaust muffler thereafter as
 incorporates muffler P/N DEL200201-   specified in paragraph (e)(5) of
 101; and                              this AD.
        (B) Reduced sound exhaust
         system, P/N DEL200201-003
         that incorporates muffler P/
         N 200201-104.
    (ii) The tail pipe and the tail
     pipe opening in the lower cowl
     for a 0.5-inch minimum
     clearance.
    (iii) Inspect the propeller for
     proper propeller clocking
     position.
(2) As a result of the inspections    Before further flight after the       As specified in Liberty Aerospace,
 required in paragraphs (e)(1)(ii)     inspection required in paragraph      Inc. Service Document Critical
 and (e)(1)(iii) of this AD:           (e)(1) of this AD.                    Service Bulletin (CSB) CSB-09-001,
(i) If the clearance between the                                             Revision Level B, Revised on March
 tail pipe and the tail pipe opening                                         18, 2009.
 is less than the required 0.5-inch
 minimum, trim the lower cowl as
 needed to achieve the minimum
 clearance.
    (ii) If there is a discrepancy
     in the propeller clocking
     position, remove and reinstall
     the propeller at the correct
     position.

[[Page 20267]]


(3) As a result of the initial        Before further flight after the       Follow Liberty Aerospace, Inc.
 inspection required in paragraph      initial inspection required in        Service Document Critical Service
 (e)(1)(i) of this AD or any           paragraph (e)(1) of this AD and       Bulletin (CSB) CSB-09-001, Revision
 repetitive inspection required in     before further flight after any       Level B, Revised on March 18, 2009.
 paragraph (e)(5) of this AD, if a     repetitive inspection required in
 crack is found, replace the exhaust   paragraph (e)(5) of this AD.
 muffler.
(i) The manufacturer will provide
 the replacement exhaust system.
    (ii) A reduced sound exhaust
     system may be replaced with a
     standard exhaust system.
    (iii) Installing a reduced sound
     exhaust system as a replacement
     part also requires installing a
     bypass SCAT tube and a ``Do Not
     Use'' placard on or near the
     heater knob.
(4) If the airplane is equipped with  Within the next 10 hours TIS after    Follow Liberty Aerospace, Inc.
 a reduced sound exhaust system and    April 20, 2009 (the effective date    Service Document Critical Service
 no cracks are found during the        of AD 2009-08-05).                    Bulletin (CSB) CSB-09-001, Revision
 initial inspection required in                                              Level B, Revised on March 18, 2009.
 paragraph (e)(1) of this AD,
 install a bypass SCAT tube and a
 ``Do Not Use'' placard on or near
 the heater knob.
(5) If no cracks are found in the     (i) For airplanes equipped with a     Follow Liberty Aerospace, Inc.
 exhaust muffler during the initial    standard exhaust system and the       Service Document Critical Service
 inspection required in paragraph      optional bypass SCAT tube has not     Bulletin (CSB) CSB-09-001, Revision
 (e)(1) of this AD or if the exhaust   been installed, repetitively          Level B, Revised on March 18, 2009.
 muffler was replaced as required in   inspect thereafter every 25 hours
 paragraph (e)(3) of this AD,          TIS or every 12 months, whichever
 repetitively inspect thereafter at    occurs first.
 the intervals specified in           (ii) For airplanes equipped with a
 paragraphs (e)(5)(i), (e)(5)(ii),     standard exhaust system and the
 and (e)(5)(iii) of this AD.           optional bypass SCAT tube has been
                                       installed, repetitively inspect
                                       thereafter every 50 hours TIS or
                                       every 12 months, whichever occurs
                                       first.
                                      (iii) For airplanes equipped with a
                                       reduced sound exhaust system and
                                       the required bypass SCAT tube has
                                       been installed, repetitively
                                       inspect thereafter every 50 hours
                                       TIS or every 12 months, whichever
                                       occurs first.
(6) Report the results of the         Within 10 days after each inspection  Use the form (Figure 1 of this AD)
 following inspections required in     required by this AD.                  and submit it to FAA, Atlanta
 this AD to the FAA.                                                         Aircraft Certification Office, 1701
(i) Initial inspection required in                                           Columbia Avenue, College Park,
 paragraph (e)(1) of this AD.                                                Georgia 30337; fax: (404) 474-5606;
(ii) Repetitive inspections required                                         e-mail corey.spiegel@faa.gov.
 in paragraph (e)(5) of this AD only
 if cracks are found.
    (iii) The Office of Management
     and Budget (OMB) approved the
     information collection
     requirements contained in this
     regulation under the provisions
     of the Paperwork Reduction Act
     of 1980 (44 U.S.C. 3501 et
     seq.) and assigned OMB Control
     Number 2120-0056.
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[[Page 20268]]


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------------------------------------------------------------------------
                   AD 2009-08-05 R1 Inspection Report
------------------------------------------------------------------------
Airplane Serial Number
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Airplane Tach Hours at time of
 inspection
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Propeller type (circle one)         MT                 Sensenich
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Propeller Tach Hours at time of
 inspection
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Exhaust Type (circle one)           Standard           Reduced Sound
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Is Exhaust Cracked? (circle one)    YES                NO
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Did lower cowl require trimming at  YES                NO
 the tail pipe opening? (circle
 one) Not applicable after initial
 inspection
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Did the propeller clocking          YES                NO
 position need to be corrected?
 (circle one) Not applicable after
 initial inspection.
------------------------------------------------------------------------
Were any other discrepancies
 noticed during the inspection?
------------------------------------------------------------------------
Name:
------------------------------------------------------------------------
Telephone and/or e-mail address:
------------------------------------------------------------------------
Date:
------------------------------------------------------------------------
     Send report to: Corey Spiegel, Aerospace Engineer, Atlanta ACO,
           1701 Columbia Avenue, College Park, Georgia 30337;
        facsimile: (404) 474-5606; e-mail: corey.spiegel@faa.gov.

                                Figure 1
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Special Flight Permit

    (f) Under 14 CFR part 39.23, we are limiting the special flight 
permits for this AD by the following conditions:
    (1) The cabin heat turned off; and
    (2) The fresh air vents are open.

Alternative Methods of Compliance (AMOCs)

    (g) The Manager, Atlanta Aircraft Certification Office (ACO), 
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: Corey Spiegel, Aerospace Engineer, Atlanta ACO, 1701 Columbia 
Avenue, College Park, Georgia 30337. Before using any approved AMOC 
on any airplane to which the AMOC applies, notify your appropriate 
principal inspector (PI) in the FAA Flight Standards District Office 
(FSDO), or lacking a PI, your local FSDO.

Material Incorporated by Reference

    (h) You must use Liberty Aerospace, Inc. Service Document 
Critical Service Bulletin (CSB) CSB-09-001, Revision Level B, 
Revised on March 18, 2009, to do the actions required by this AD, 
unless the AD specifies otherwise.
    (1) On April 20, 2009 (74 FR 16117, April 9, 2009), the Director 
of the Federal Register previously approved the incorporation by 
reference of this service information under 5 U.S.C. 552(a) and 1 
CFR part 51.
    (2) For service information identified in this AD, contact 
Liberty Aerospace, 100 Aerospace Drive, Melbourne, Florida 32901; 
telephone: (321) 752-0332 or (800) 759-5953; fax: (321) 752-0377; 
Internet: http://www.libertyaircraft.com.
    (3) You may review copies of the service information 
incorporated by reference for this AD at the FAA, Central Region, 
Office of the Regional Counsel, 901 Locust, Kansas City, Missouri 
64106. For information on the availability of this material at the 
Central Region, call (816) 329-3768.
    (4) You may also review copies of the service information 
incorporated by reference for this AD at the National Archives and 
Records Administration (NARA). For information on the availability 
of this material at NARA, call (202) 741-6030, or go to: http://
www.archives.gov/federal_register/code_of_federal_regulations/
ibr_locations.html.

    Issued in Kansas City, Missouri, on April 7, 2010.
Kim Smith,
Manager, Small Airplane Directorate, Aircraft Certification Service.
[FR Doc. 2010-8596 Filed 4-16-10; 8:45 am]
BILLING CODE 4910-13-P

