64854 Federal Register / Vol. 76, No. 202 / Wednesday, October 19, 2011 / Proposed Rules

TABLE 1—IRN TASK REVISION—Continued

Model— IRN #— Initial compliance time— Chapter 04 of these documents—

Model 40, 45 ...... N3220103, N3220104, N3220105, and Before the accumulation of 17,000 total Bombardier Maintenance N3220106. landings on the component. Manual MM–104, Revision 53, dated January 10, 2011; or Bombardier Maintenance Manual MM– 105, Revision 21, dated January 10, 2011; as applicable. Model 45 ...... N5710147, N5710171, and N5710173 .. Before the accumulation of 6,500 total Bombardier Learjet 45 Maintenance flight hours. Manual MM–104, Revision 53, dated January 10, 2011. Model 45 ...... N5710175 ...... Before the accumulation of 6,900 total Bombardier Learjet 45 Maintenance flight hours. Manual MM–104, Revision 53, dated January 10, 2011. Model 45 ...... N5710177 ...... Before the accumulation of 7,000 total Bombardier Learjet 45 Maintenance flight hours. Manual MM–104, Revision 53, dated January 10, 2011.

No Alternative Intervals Issued in Renton, Washington, on October management issue shows two categories of (h) After accomplishing the revisions 5, 2011. scenarios that could lead to thrust asymmetry during landing with controllability and required by paragraphs (g) of this AD, no Ali Bahrami, deceleration consequences [.] alternative IRN task or IRN task interval may Manager, Transport Airplane Directorate, be used unless the IRN task or IRN task Certification Service. * * * * * These thrust asymmetry conditions, if not interval is approved as an AMOC in [FR Doc. 2011–27010 Filed 10–18–11; 8:45 am] corrected, could result in loss of control of accordance with the procedures specified in BILLING CODE 4910–13–P the aeroplane during landing. paragraph (i)(1) of this AD. * * * * * Alternative Methods of Compliance DEPARTMENT OF TRANSPORTATION The proposed AD would require actions (AMOCs) that are intended to address the unsafe (i)(1) The Manager, Wichita Aircraft Federal Aviation Administration condition described in the MCAI. Certification Office (ACO), FAA, has the DATES: We must receive comments on authority to approve AMOCs for this AD, if 14 CFR Part 39 this proposed AD by December 5, 2011. requested using the procedures found in 14 [Docket No. FAA–2011–1087; Directorate CFR 39.19. In accordance with 14 CFR 39.19, Identifier 2011–NM–032–AD] ADDRESSES: You may send comments by send your request to your principal inspector any of the following methods: or local Flight Standards District Office, as RIN 2120–AA64 • Federal eRulemaking Portal: Go to appropriate. If sending information directly http://www.regulations.gov. Follow the to the manager of the ACO, send it to the Airworthiness Directives; Model A318, A319, A320, and A321 Series instructions for submitting comments. attention of the person identified in the • Fax: (202) 493–2251. Related Information section of this AD. Airplanes • Mail: U.S. Department of (2) Before using any approved AMOC, AGENCY: Federal Aviation Transportation, Docket Operations, notify your appropriate principal inspector, Administration (FAA), DOT. or lacking a principal inspector, the manager M–30, West Building Ground Floor, ACTION: Notice of proposed rulemaking Room W12–140, 1200 New Jersey of the local flight standards district office/ (NPRM). certificate holding district office. Avenue, SE., Washington, DC 20590. SUMMARY: We propose to adopt a new • Hand Delivery: U.S. Department of Related Information airworthiness directive (AD) for the Transportation, Docket Operations, (j) For more information about this AD, products listed above that would M–30, West Building Ground Floor, contact William Griffith, Aerospace Engineer, supersede two existing ADs. This Room W12–140, 1200 New Jersey Airframe Branch, ACE–118W, FAA, Wichita proposed AD results from mandatory Avenue, SE., Washington, DC, between Aircraft Certification Office, 1801 Airport continuing airworthiness information 9 a.m. and 5 p.m., Monday through Road, Room 100, Mid-Continent Airport, (MCAI) originated by an aviation Friday, except Federal holidays. Wichita, Kansas 67209; phone: 316–946– authority of another country to identify For service information identified in 4116; fax: 316–946–4107; e-mail: and correct an unsafe condition on an this proposed AD, contact Airbus, [email protected]. aviation product. The MCAI describes Airworthiness Office—EAS, 1 Rond (k) For service information identified in the unsafe condition as: Point Maurice Bellonte, 31707 Blagnac this AD, contact Learjet, Inc., One Learjet Cedex, France; telephone +33 5 61 93 36 Way, Wichita, Kansas 67209–2942; telephone Following in-service experience, analyses 316–946–2000; fax 316–946–2220; e-mail of the failure to follow procedure or heed 96; fax +33 5 61 93 44 51; e-mail: existing cockpit cues were conducted to [email protected]; Internet http:// [email protected]; assess the consequences of mismanagement www.bombardier.com. You may review Internet http://www.airbus.com. You of thrust levers during landing. may review copies of the referenced copies of the referenced service information The investigation results identified the at the FAA, Transport Airplane Directorate, service information at the FAA, need for improvements in the identification Transport Airplane Directorate, 1601 1601 Lind Avenue, SW., Renton, of throttle mis-positioning and so providing Washington. For information on the further opportunity for the flight crew to Lind Avenue, SW., Renton, Washington. availability of this material at the FAA, call identify an incorrect thrust lever For information on the availability of 425–227–1221. configuration and to correct this. * * * In this material at the FAA, call 425–227– addition, the analysis of the thrust lever 1221.

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Examining the AD Docket Since we issued AD 97–22–13, Bulletin A320–31–1141, Revision 04, Amendment 39–10185 (62 FR 58891, dated February 14, 2002; Service You may examine the AD docket on October 31, 1997) and AD 2002–10–06, Bulletin A320–31–1334, Revision 04, the Internet at http:// Amendment 39–12752 (67 FR 35425, including Appendix 01, dated www.regulations.gov; or in person at the May 20, 2002), we have determined in September 12, 2011. The actions Docket Operations office between 9 a.m. consultation with the European described in this service information are and 5 p.m., Monday through Friday, Aviation Safety Agency (EASA), which intended to correct the unsafe condition except Federal holidays. The AD docket is the Technical Agent for the Member identified in the MCAI. contains this proposed AD, the States of the European Community, that regulatory evaluation, any comments FAA’s Determination and Requirements additional actions are necessary to received, and other information. The of This Proposed AD address the unsafe condition. EASA has street address for the Docket Operations issued EASA Airworthiness Directive This product has been approved by office (telephone (800) 647–5527) is in 2011–0001, dated January 10, 2011 the aviation authority of another the ADDRESSES section. Comments will (referred to after this as ‘‘the MCAI’’), to country, and is approved for operation be available in the AD docket shortly correct an unsafe condition for the in the United States. Pursuant to our after receipt. specified products. The MCAI states: bilateral agreement with the State of FOR FURTHER INFORMATION CONTACT: Tim Following in-service experience, analyses Design Authority, we have been notified Dulin, Aerospace Engineer, of the failure to follow procedure or heed of the unsafe condition described in the International Branch, ANM–116, existing cockpit cues were conducted to MCAI and service information Transport Airplane Directorate, FAA, assess the consequences of mismanagement referenced above. We are proposing this 1601 Lind Avenue, SW., Renton, of thrust levers during landing. AD because we evaluated all pertinent Washington 98057–3356; telephone The investigation results identified the information and determined an unsafe (425) 227–2141; fax (425) 227–1149. need for improvements in the identification condition exists and is likely to exist or of throttle mis-positioning and so providing SUPPLEMENTARY INFORMATION: develop on other products of the same further opportunity for the flight crew to type design. Comments Invited identify an incorrect thrust lever configuration and to correct this. For the Differences Between This AD and the We invite you to send any written A320 family of aeroplanes this being IDLE or MCAI or Service Information relevant data, views, or arguments about REVERSE, which is necessary to enable this proposed AD. Send your comments ground spoiler (G/S) extension and auto- We have reviewed the MCAI and to an address listed under the brake (A/BRK) functions. In addition, the related service information and, in ADDRESSES section. Include ‘‘Docket No. analysis of the thrust lever management issue general, agree with their substance. But FAA–2011–1087; Directorate Identifier shows two categories of scenarios that could we might have found it necessary to use lead to thrust asymmetry during landing with different words from those in the MCAI 2011–NM–032–AD’’ at the beginning of controllability and deceleration your comments. We specifically invite consequences: to ensure the AD is clear for U.S. operators and is enforceable. In making comments on the overall regulatory, —One thrust lever kept in forward thrust economic, environmental, and energy when the other is put in IDLE or REVERSE. these changes, we do not intend to differ aspects of this proposed AD. We will This has been seen in cases of dispatch substantively from the information consider all comments received by the with one thrust reverser inoperative; and provided in the MCAI and related closing date and may amend this —One thrust lever moved in forward position service information. proposed AD based on those comments. after landing, usually when bringing the We might also have proposed We will post all comments we thrust lever back from REVERSE to IDLE. different actions in this AD from those receive, without change, to http:// These thrust asymmetry conditions, if not in the MCAI in order to follow FAA www.regulations.gov, including any corrected, could result in loss of control of policies. Any such differences are personal information you provide. We the aeroplane during landing. highlighted in a NOTE within the This [EASA] AD supersedes DGAC France proposed AD. will also post a report summarizing each AD 94–211–059(B) R2 and 96–079–079(B) substantive verbal contact we receive [which corresponds to FAA AD 97–22–13 (62 Costs of Compliance about this proposed AD. FR 58891, October 31, 1997], mandating Based on the service information, we Discussion Aircraft Flight Manual Temporary Revision reference 9.99.99/20 and the installation of estimate that this proposed AD would On October 23, 1997, we issued AD FWC P/N 350E017248685 (H1D2) as affect about 729 products of U.S. 97–22–13, Amendment 39–10185 (62 terminating action for both ADs. registry. FR 58891, October 31, 1997) (which This [EASA] AD retains the requirements The actions that are required by AD corresponds to Direction Ge´ne´rale de of DGAC France AD 2000–320–147(B) [which 2002–10–06 Amendment 39–12752 (67 corresponds to FAA AD 2002–10–06 (67 FR l’Aviation Civile (DGAC) AD 96–079– 35425, May 20, 2002)], which is also FR 35425, May 20, 2002) and retained 079(B), dated April 10, 1996, and which superseded, which required the installation in this proposed AD take about 7 work- supersedes FAA AD 94–20–02, of FWC P/N 350E017271616 (H1E2). hours per product, at an average labor Amendment 39–9030 (59 FR 48563, For the reasons described above, this rate of $85 per work-hour. Required September 22, 1994)); and on May 10, [EASA] AD requires the replacement of both parts would cost about $0 per product. 2002, we issued AD 2002–10–06, FWC units with minimum FWC P/N Where the service information lists Amendment 39–12752 (67 FR 35425, 350E053020909 (H2F5) units, introducing required parts costs that are covered May 20, 2002) (which corresponds to ‘‘Enhanced RETARD’’ logic. under warranty, we have assumed that DGAC AD 2000–320–147(B), dated July You may obtain further information by there will be no charge for these parts. 26, 2000). AD 97–22–13 required a examining the MCAI in the AD docket. As we do not control warranty coverage limitations section revision to the for affected parties, some parties may airplane flight manual and the Relevant Service Information incur costs higher than estimated here. installation of a new flight warning Airbus has issued Mandatory Service Based on these figures, the estimated computer (FWC). AD 2002–10–06 Bulletin A320–31–1106, Revision 05, cost of the currently required actions is required the replacement of the FWC. dated September 21, 2000; Service $595 per product.

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We estimate that it would take about The Proposed Amendment Reason 4 work-hours per product to comply (e) The mandatory continuing with the new basic requirements of this Accordingly, under the authority airworthiness information (MCAI) states: proposed AD. The average labor rate is delegated to me by the Administrator, Following in-service experience, analyses $85 per work-hour. Required parts the FAA proposes to amend 14 CFR part of the failure to follow procedure or heed would cost about $0 per product. Based 39 as follows: existing cockpit cues were conducted to on these figures, we estimate the cost of assess the consequences of mismanagement PART 39—AIRWORTHINESS the proposed AD on U.S. operators to be of thrust levers during landing. DIRECTIVES $247,860, or $340 per product. The investigation results identified the need for improvements in the identification Authority for This Rulemaking 1. The authority citation for part 39 of throttle mis-positioning and so providing continues to read as follows: further opportunity for the flight crew to Title 49 of the United States Code identify an incorrect thrust lever Authority: 49 U.S.C. 106(g), 40113, 44701. specifies the FAA’s authority to issue configuration and to correct this. * * * In rules on aviation safety. Subtitle I, § 39.13 [Amended] addition, the analysis of the thrust lever section 106, describes the authority of management issue shows two categories of the FAA Administrator. ‘‘Subtitle VII: 2. The FAA amends § 39.13 by scenarios that could lead to thrust asymmetry Aviation Programs,’’ describes in more removing Amendment 39–10185 (62 FR during landing with controllability and detail the scope of the Agency’s 58891, October 31, 1997) and deceleration consequences: authority. Amendment 39–12752, (67 FR 35425, * * * * * We are issuing this rulemaking under May 20, 2002) and adding the following These thrust asymmetry conditions, if not the authority described in ‘‘Subtitle VII, new AD: corrected, could result in loss of control of the aeroplane during landing. Part A, Subpart III, Section 44701: Airbus: Docket No. FAA–2011–1087; General requirements.’’ Under that Directorate Identifier 2011–NM–032–AD. * * * * * section, Congress charges the FAA with Comments Due Date Compliance promoting safe flight of civil aircraft in (a) We must receive comments by (f) You are responsible for having the air commerce by prescribing regulations December 5, 2011. actions required by this AD performed within for practices, methods, and procedures the compliance times specified, unless the the Administrator finds necessary for Affected ADs actions have already been done. safety in air commerce. This regulation (b) This AD supersedes AD 97–22–13, Restatement of Requirements of AD 2002– Amendment 39–10185 (62 FR 58891, October is within the scope of that authority 10–06, Amendment 39–12752 (67 FR 35425, 31, 1997); and AD 2002–10–06, Amendment because it addresses an unsafe condition May 20, 2002), With New Optional Method 39–12752 (67 FR 35425, May 20, 2002). that is likely to exist or develop on of Compliance products identified in this rulemaking Applicability Modification action. (c) This AD applies to Airbus Model A318– (g) For Model A319, A320, and A321 series 111, –112, –121, and –122 airplanes; Model Regulatory Findings airplanes without Airbus modification 26017: A319–111, –112, –113, –114, –115, –131, Within 18 months after June 24, 2002 (the We determined that this proposed AD –132, and –133 airplanes; Model A320–111, effective date of AD 2002–10–06, –211, –212, –214, –231, –232, and –233 would not have federalism implications Amendment 39–12752 (67 FR 35425, May 20, airplanes; and Model A321–111, –112, –131, under Executive Order 13132. This 2002)), replace the flight warning computers –211, –212, –213, –231, and –232 airplanes; proposed AD would not have a (FWCs) in accordance with Airbus Service certificated in any category; all serial substantial direct effect on the States, on Bulletin A320–31–1106, Revision 04, dated numbers; if equipped with a flight warning the relationship between the national December 21, 1999; or Revision 05, dated computer (FWC) with a part number (P/N) September 21, 2000. Government and the States, or on the listed in table 1 of this AD. distribution of power and Note 1: FWC replacement accomplished prior to June 24, 2002, in accordance with responsibilities among the various TABLE 1—LIST OF FWC PART levels of government. Airbus Service Bulletin A320–31–1106, NUMBERS AFFECTED BY THIS AD dated January 3, 1997; Revision 01, dated For the reasons discussed above, I April 16, 1997; Revision 02, dated January certify this proposed regulation: FWC Part No. 20, 1998; or Revision 03, dated July 9, 1999; 1. Is not a ‘‘significant regulatory is acceptable for compliance with the action’’ under Executive Order 12866; 350E017238484 (H1D1) requirements of paragraph (g) of this AD. 350E016187171 (C5) 2. Is not a ‘‘significant rule’’ under the 350E017248685 (H1D2) Optional Method of Compliance DOT Regulatory Policies and Procedures 350E017251414 (H1E1) (44 FR 11034, February 26, 1979); and (h) Installation of a FWC standard in 350E017271616 (H1E2) accordance with the Accomplishment 3. Will not have a significant 350E018291818 (H1E3CJ) Instructions of Airbus Service Bulletin A320– economic impact, positive or negative, 350E018301919 (H1E3P) 31–1141, Revision 04, dated February 14, on a substantial number of small entities 350E018312020 (H1E3Q) 2002, is an acceptable method of compliance under the criteria of the Regulatory 350E053020202 (H2E2) with the replacement required by paragraph Flexibility Act. 350E053020303 (H2E3) (g) of this AD. 350E053020404 (H2E4) We prepared a regulatory evaluation 350E053020606 (H2F2) New Requirements of This AD of the estimated costs to comply with 350E053020707 (H2F3) Flight Warning Computer Replacement this proposed AD and placed it in the 350E053021010 (H2F3P) AD docket. 350E053020808 (H2F4) (i) Within 48 months after the effective date of this AD: Replace both FWC units with List of Subjects in 14 CFR Part 39 FWC part number 350E053020909, in Subject accordance with the Accomplishment Air transportation, Aircraft, Aviation (d) Air Transport Association (ATA) of Instructions of Airbus Service Bulletin A320– safety, Incorporation by reference, America Code 31: Indicating and Recording 31–1334, Revision 04, including Appendix Safety. Systems. 01, dated September 12, 2011.

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Credit for Actions Accomplished in Airbus Service Bulletin A320–31–1106, • Federal eRulemaking Portal: Go to Accordance With Previous Service Revision 04, dated December 21, 1999; http://www.regulations.gov. Follow the Information Airbus Mandatory Service Bulletin A320–31– instructions for submitting comments. (j) For all airplanes, except for Model A319 1106, Revision 05, dated September 21, 2000; • Fax: (202) 493–2251. series airplanes on which modifications Airbus Service Bulletin A320–31–1141, • Revision 04, dated February 14, 2002; and Mail: U.S. Department of 28238, 28162, and 28342 have been Transportation, Docket Operations, incorporated, replacing both FWCs in Airbus Service Bulletin A320–31–1334, accordance with Airbus Service Bulletin Revision 04, including Appendix 01, dated M–30, West Building Ground Floor, A320–31–1334, dated July 30, 2009; Revision September 12, 2011; for related information. Room W12–140, 1200 New Jersey 01, dated December 14, 2009; or Revision 02, Avenue, SE., Washington, DC 20590. Issued in Renton, Washington, on October • dated September 13, 2010; or Revision 03, 11, 2011. Hand Delivery: U.S. Department of dated March 15, 2011; before the effective Ali Bahrami, Transportation, Docket Operations, date of this AD is acceptable for compliance M–30, West Building Ground Floor, with the corresponding replacement required Manager, Transport Airplane Directorate, Aircraft Certification Service. Room W12–140, 1200 New Jersey by paragraph (i) of this AD. Avenue, SE., Washington, DC, between (k) Replacing both FWCs in accordance [FR Doc. 2011–27026 Filed 10–18–11; 8:45 am] 9 a.m. and 5 p.m., Monday through with Airbus Service Bulletin A320–31–1141, BILLING CODE 4910–13–P dated March 6, 2000; Revision 01, dated May Friday, except Federal holidays. 25, 2000; Revision 02, dated January 22, For service information identified in 2001; or Revision 03, dated June 12, 2001; DEPARTMENT OF TRANSPORTATION this proposed AD, contact Bombardier, before the effective date of this AD is Inc., 400 Coˆte-Vertu Road West, Dorval, acceptable for compliance with the Federal Aviation Administration Que´bec H4S 1Y9, Canada; telephone corresponding installation specified in 514–855–5000; fax 514–855–7401; paragraph (h) of this AD. 14 CFR Part 39 e-mail [email protected]; Parts Installation Internet http://www.bombardier.com. (l) As of the effective date of this AD, and [Docket No. FAA–2011–1089; Directorate You may review copies of the after accomplishing the actions in paragraph Identifier 2011–NM–110–AD] referenced service information at the (i) of this AD, no person may install a FWC FAA, Transport Airplane Directorate, with a P/N listed in table 1 of this AD on any RIN 2120–AA64 1601 Lind Avenue, SW., Renton, airplane. Washington. For information on the FAA AD Differences Airworthiness Directives; Bombardier, availability of this material at the FAA, Inc. Model BD–100–1A10 (Challenger call 425–227–1221. Note 2: This AD differs from the MCAI 300) Airplanes and/or service information as follows: No Examining the AD Docket differences. AGENCY: Federal Aviation Administration (FAA), DOT. You may examine the AD docket on Other FAA AD Provisions the Internet at http:// ACTION: (m) The following provisions also apply to Notice of proposed rulemaking www.regulations.gov; or in person at the this AD: (NPRM). Docket Operations office between 9 a.m. (1) Alternative Methods of Compliance SUMMARY: We propose to adopt a new and 5 p.m., Monday through Friday, (AMOCs): The Manager, International except Federal holidays. The AD docket Branch, ANM–116, Transport Airplane airworthiness directive (AD) for the Directorate, FAA, has the authority to products listed above. This proposed contains this proposed AD, the approve AMOCs for this AD, if requested AD results from mandatory continuing regulatory evaluation, any comments using the procedures found in 14 CFR 39.19. airworthiness information (MCAI) received, and other information. The In accordance with 14 CFR 39.19, send your originated by an aviation authority of street address for the Docket Operations request to your principal inspector or local another country to identify and correct office (telephone (800) 647–5527) is in Flight Standards District Office, as an unsafe condition on an aviation the ADDRESSES section. Comments will appropriate. If sending information directly be available in the AD docket shortly to the International Branch, send it to ATTN: product. The MCAI describes the unsafe Tim Dulin, Aerospace Engineer, International condition as: after receipt. FOR FURTHER INFORMATION CONTACT: Branch, ANM–116, Transport Airplane During a routine inspection, deformation Directorate, FAA, 1601 Lind Avenue, SW., was found at the neck of the pressure Cesar Gomez, Aerospace Engineer, Renton, Washington 98057–3356; telephone regulator body on the oxygen Cylinder and Airframe and Mechanical Systems 425–227–2141; fax 425–227–1149. Regulator Assemblies (CRA) of a BD–700– Branch, ANE–171, FAA, New York Information may be e-mailed to: 9-ANM-116- 1A11 aeroplane. Aircraft Certification Office, 1600 [email protected]. Before using An investigation by the vendor * * * any approved AMOC, notify your appropriate Stewart Avenue, Suite 410, Westbury, revealed that the deformation was attributed principal inspector, or lacking a principal New York 11590; telephone (516) 228– to two (2) batches of raw material that did not inspector, the manager of the local flight 7318; fax (516) 794–5531. meet the required tensile strength. This may standards district office/certificate holding SUPPLEMENTARY INFORMATION: district office. The AMOC approval letter cause elongation of the pressure regulator must specifically reference this AD. neck, which could result in rupture of the Comments Invited (2) Airworthy Product: For any requirement oxygen cylinder and in the case of cabin in this AD to obtain corrective actions from depressurization, oxygen not being available We invite you to send any written a manufacturer or other source, use these when required. relevant data, views, or arguments about actions if they are FAA-approved. Corrective * * * * * this proposed AD. Send your comments actions are considered FAA-approved if they to an address listed under the are approved by the State of Design Authority The proposed AD would require ADDRESSES section. Include ‘‘Docket No. (or their delegated agent). You are required actions that are intended to address the FAA–2011–1089; Directorate Identifier to assure the product is airworthy before it unsafe condition described in the MCAI. 2011–NM–110–AD’’ at the beginning of is returned to service. DATES: We must receive comments on your comments. We specifically invite Related Information this proposed AD by December 5, 2011. comments on the overall regulatory, (n) Refer to MCAI EASA Airworthiness ADDRESSES: You may send comments by economic, environmental, and energy Directive 2011–0001, dated January 10, 2011; any of the following methods: aspects of this proposed AD. We will

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