29697

Proposed Rules Federal Register Vol. 61, No. 114

Wednesday, June 12, 1996

This section of the FEDERAL REGISTER By the National Credit Union telephone 1332–249428, fax 1332– contains notices to the public of the proposed Administration Board on June 3, 1996. 249423. This information may be issuance of rules and regulations. The Becky Baker, examined at the FAA, New England purpose of these notices is to give interested Secretary of the Board. Region, Office of the Assistant Chief persons an opportunity to participate in the Counsel, 12 New England Executive rule making prior to the adoption of the final [FR Doc. 96–14919 Filed 6–11–96; 8:45 am] rules. BILLING CODE 7535±01±M Park, Burlington, MA. FOR FURTHER INFORMATION CONTACT: Daniel Kerman, Aerospace Engineer, NATIONAL CREDIT UNION DEPARTMENT OF TRANSPORTATION Engine Certification Office, FAA, Engine ADMINISTRATION and Propeller Directorate, 12 New Federal Aviation Administration England Executive Park, Burlington, MA 12 CFR Part 703 01803–5299; telephone (617) 238–7130, 14 CFR Part 39 Investment and Deposit Activities fax (617) 238–7199. [Docket No. 96±ANE±09] SUPPLEMENTARY INFORMATION: AGENCY: National Credit Union RIN 2120±AA64 Administration (NCUA). Comments Invited ACTION: Proposed rule; Extension of Airworthiness Directives; Rolls-Royce Interested persons are invited to comment period. plc RB211±535E4 and ±535E4±B Series participate in the making of the Turbofan Engines proposed rule by submitting such SUMMARY: On November 29, 1995 (60 FR written data, views, or arguments as 61219), the National Credit Union AGENCY: Federal Aviation Administration, DOT. they may desire. Communications Administration (NUCA) published for should identify the Rules Docket public comment a proposed rule ACTION: Notice of proposed rulemaking (NPRM). number and be submitted in triplicate to regarding investment and deposit the address specified above. All activities for credit unions. The SUMMARY: This document proposes the communications received on or before comment period for this proposed rule adoption of a new airworthiness the closing date for comments, specified was to have expired on March 28, 1996. directive (AD) that is applicable to above, will be considered before taking The original comment period was Rolls-Royce plc RB211–535E4 and action on the proposed rule. The extended to June 26, 1996 (61 FR 8499). –535E4–B series turbofan engines. This proposals contained in this notice may A national trade association has proposal would require installation of be changed in light of the comments requested an additional extension in an improved fuel flow governor that received. which to respond in order to review the incorporates revised minimum Comments are specifically invited on proposed rule concurrently with the compressor discharge P4 stop settings. the overall regulatory, economic, proposed rule governing corporate This proposal is prompted by reports of environmental, and energy aspects of credit unions which was issued by the engine rundowns during low idle the proposed rule. All comments NCUA Board on May 22, 1996 with a descent during icing conditions. The submitted will be available, both before 90-day comment period. To encourage actions specified by the proposed AD and after the closing date for comments, additional comments, the NCUA Board are intended to prevent compressor stall in the Rules Docket for examination by has decided to extend the comment and subsequent engine rundown on one interested persons. A report period on the proposed rule. The or both engines. summarizing each FAA-public contact extended comment period now expires concerned with the substance of this September 30, 1996. DATES: Comments must be received by August 12, 1996. proposal will be filed in the Rules DATES: The comment period has been ADDRESSES: Submit comments in Docket. extended and now expires September triplicate to the Federal Aviation Commenters wishing the FAA to 30, 1996. Comments must be received Administration (FAA), New England acknowledge receipt of their comments on or before September 30, 1996. Region, Office of the Assistant Chief submitted in response to this notice ADDRESSES: Comments should be Counsel, Attention: Rules Docket No. must submit a self-addressed, stamped directed to Becky Baker, Secretary of the 96–ANE–09, 12 New England Executive postcard on which the following Board. Mail or hand-deliver comments Park, Burlington, MA 01803–5299. statement is made: ‘‘Comments to to: National Credit Union Comments may also be submitted to the Docket Number 96–ANE–09.’’ The Administration Board, 1775 Duke Rules Docket by using the following postcard will be date stamped and Street, Alexandria, Virginia 22314– Internet address: ‘‘epd- returned to the commenter. 3428. Fax comments to (703) 518–6480. [email protected]’’. Availability of NPRMs Please send comments by one method Comments may be inspected at this only. location between 8:00 a.m. and 4:30 Any person may obtain a copy of this FOR FURTHER INFORMATION CONTACT: p.m., Monday through Friday, except NPRM by submitting a request to the David M. Marquis, Director, Office of Federal holidays. FAA, New England Region, Office of the Examination and Insurance, (703) 518– The service information referenced in Assistant Chief Counsel, Attention: 6360, or Daniel Gordon, Senior the proposed rule may be obtained from Rules Docket No. 96–ANE–09, 12 New Investment Officer, (703) 518–6620, or Rolls-Royce plc, P.O. Box 31, Moor England Executive Park, Burlington, MA at the above address. Lane, Derby, DE248BJ, United Kingdom; 01803–5299. 29698 Federal Register / Vol. 61, No. 114 / Wednesday, June 12, 1996 / Proposed Rules

Discussion The FAA Transport Airplane to accomplish the proposed actions, and Directorate issued AD 96–04– 11, that the average labor rate is $60 per The Civil Aviation Authority (CAA), Amendment 39–9523, (61 FR 6935, work hour. The affected FFGs would be which is the airworthiness authority for February 23, 1996) applicable to Boeing modified to incorporate the changes the United Kingdom, recently notified 757–200 series airplanes equipped with required by this proposed AD on a free- the Federal Aviation Administration R–R Model RB211–535E4 and –535E4– of-charge basis per engine. Based on (FAA) that an unsafe condition may B engines, that requires revision of the these figures, the total cost impact of the exist on Rolls-Royce plc (R–R) RB211– limitations section of the FAA-approved proposed AD on U.S. operators is 535 series turbofan engines. The CAA Airplane Flight Manual (AFM) to estimated to be $68,580. advises that they have reports of seven require the flight crew to activate engine The regulations proposed herein engine rundown events on the R–R inlet cowl thermal anti-ice systems on would not have substantial direct effects RB211–535E4 and –535E4–B engines both engines prior to descent. on the States, on the relationship installed on Boeing 757–200 series Installation of the improved FFG on between the national government and aircraft since January 1992. All of the both engines for each aircraft would the States, or on the distribution of events occurred within a narrow band of constitute terminating action to the power and responsibilities among the altitude between 25,000 and 29,000 feet. AFM revision requirements of AD 96– various levels of government. Therefore, In four of the seven events, the second 04–11. in accordance with Executive Order engine installed on the aircraft surged This engine model is manufactured in 12612, it is determined that this and recovered. In six of the seven the United Kingdom and is type proposal would not have sufficient events, the engine rundowns occurred certificated for operation in the United federalism implications to warrant the approximately 3 to 5 seconds following States under the provisions of Section preparation of a Federalism Assessment. selection of inlet cowl anti-ice during 21.29 of the Federal Aviation the descent phase of flight. Selection of Regulations (14 CFR 21.29) and the For the reasons discussed above, I cowl inlet anti-ice results in an engine applicable bilateral airworthiness certify that this proposed regulation (1) acceleration from low idle to high idle agreement. Pursuant to this bilateral is not a ‘‘significant regulatory action’’ thrust, which can cause liberation of airworthiness agreement, the CAA has under Executive Order 12866; (2) is not accreted ice within the engine core. In kept the FAA informed of the situation a ‘‘significant rule’’ under the DOT one event, the rundown occurred described above. The FAA has Regulatory Policies and Procedures (44 following an auto-throttle initiated examined the findings of the CAA, FR 11034, February 26, 1979); and (3) if acceleration. reviewed all available information, and promulgated, will not have a significant economic impact, positive or negative, Rolls-Royce plc has performed determined that AD action is necessary on a substantial number of small entities extensive analysis and testing and has for products of this type design that are under the criteria of the Regulatory concluded that the engine rundown is certificated for operation in the United Flexibility Act. A copy of the draft due to the following: (1) Ice accretion at States. regulatory evaluation prepared for this the inlet to the Intermediate Pressure Since an unsafe condition has been action is contained in the Rules Docket. Compressor (IPC) induces a rotating identified that is likely to exist or A copy of it may be obtained by compressor stall during descent, which develop on other engines of the same contacting the Rules Docket at the leads to a High Pressure Compressor type design registered in the United location provided under the caption (HPC) surge on acceleration; and (2) Ice States, the proposed AD would require ADDRESSES. accretion at the inlet to the IPC during installation of improved FFGs that descent is released into the core engine, incorporate revised minimum List of Subjects in 14 CFR Part 39 which in turn causes an HPC surge. This compressor discharge P4 stop settings. Air transportation, Aircraft, Aviation condition, if not corrected, could result This revised setting will raise the steady safety, Safety. in compressor stall and subsequent state low idle schedule above the idle engine rundown on one or both engines. conditions experienced during any of The Proposed Amendment the prior engine rundown events. This The manufacturer has determined that schedule increase will result in a Accordingly, pursuant to the the proposed solution for preventing substantial increase in IPC stall margin, authority delegated to me by the engine rundown is to raise the a moderate increase in HPC stall margin, Administrator, the Federal Aviation minimum compressor discharge P4 stop as well as provide the additional benefit Administration proposes to amend part setting in the fuel flow governor (FFG), of increased ice accretion tolerance due 39 of the Federal Aviation Regulations which will increase the low idle to increased compressor airflow. This (14 CFR part 39) as follows: schedule above the engine idle proposed action must be accomplished conditions experienced during all of the at the next shop visit, or within 9 PART 39ÐAIRWORTHINESS prior engine rundown events. This calendar months after the effective date DIRECTIVES schedule increase will result in a of this AD, whichever occurs first. The substantial increase in IPC stall margin, FAA has determined the calendar end- 1. The authority citation for part 39 a moderate increase in HPC stall margin, date based on the time interval required continues to read as follows: as well as provide the additional benefit for fleet modification. The actions Authority: 49 U.S.C. 106(g), 40113, 44701. of increased ice accretion tolerance due would be required to be accomplished § 39.13 [Amended] to increased compressor airflow. in accordance with SB described Rolls-Royce plc has issued Mandatory previously. 2. Section 39.13 is amended by (SB) No. RB.211–73–B869, Revision 1, There are approximately 770 engines adding the following new airworthiness dated May 24, 1996, that specifies of the affected design in the worldwide directive: installation of an improved FFG, which fleet. The FAA estimates that 381 Rolls-Royce plc: Docket No. 96–ANE–09. incorporates an increased minimum engines installed on aircraft of U.S. Applicability: Rolls-Royce plc. (R–R) compressor discharge pressure P4 stop registry would be affected by this Models RB211– 535E4 and –535E4–B setting, which will result in increased proposed AD, that it would take turbofan engines installed on Boeing 757– engine idle speeds. approximately 3 work hours per engine 200 series aircraft. Federal Register / Vol. 61, No. 114 / Wednesday, June 12, 1996 / Proposed Rules 29699

Note: This airworthiness directive (AD) ACTION: Notice of Proposed Rulemaking date for comments. A report applies to each engine identified in the (NPRM). summarizing each substantive public preceding applicability provision, regardless contact with FAA personnel concerned of whether it has been modified, altered, or SUMMARY: This proposed rule would repaired in the area subject to the with this rulemaking will be filed in the establish the Grants Pass, Oregon, Class docket. requirements of this AD. For engines that E airspace to accommodate a new have been modified, altered, or repaired so Availability of NPRM’s that the performance of the requirements of Global Positioning System (GPS) standard instrument approach this AD is affected, the owner/operator must Any person may obtain a copy of this use the authority provided in paragraph (d) procedure (SIAP) to the Grants Pass to request approval from the Federal Aviation Airport. The area would be depicted on NPRM by submitting a request to the Administration (FAA). This approval may aeronautical charts for pilot reference. Federal Aviation Administration, Operations Branch, ANM–530, 1601 address either no action, if the current DATES: Comments must be received on Lind Avenue S.W., Renton, Washington configuration eliminates the unsafe or before July 19, 1996. condition, or different actions necessary to 98055–4056. Communications must address the unsafe condition described in ADDRESSES: Send comments on the identify the notice number of this this AD. Such a request should include an proposal in triplicate to: Manager, NPRM. Persons interested in being assessment of the effect of the changed Operations Branch ANM–530, Federal placed on a mailing list for future configuration on the unsafe condition Aviation Administration, Docket No. addressed by this AD. In no case does the NPRM’s should also request a copy of 96–ANM–012, 1601 Lind Avenue S.W., Advisory Circular No. 11–2A, which presence of any modification, alteration, or Renton, Washington 98055–4056. repair remove any engine from the describes the application procedure. applicability of this AD. The official docket may be examined at the same address. The Proposal Compliance: Required as indicated, unless An informal docket may also be accomplished previously. The FAA is considering an To prevent compressor stall and examined during normal business hours subsequent engine rundown on one or both at the address listed above. amendment to part 71 of the Federal engines, accomplish the following: FOR FURTHER INFORMATION CONTACT: Aviation Regulations (14 CFR part 71) to (a) At the next shop visit, but no later than James Frala, ANM–532.4, Federal establish Class E airspace at Grants Pass, 9 calendar months after the effective date of Aviation Administration, Docket No. Oregon, to accommodate a new GPS this AD, install a fuel flow governor (FFG) 96–ANM–012, 1601 Lind Avenue S.W., SIAP at Grants Pass Airport. The area that incorporates a revised minimum would be depicted on aeronautical compressor discharge P4 stop setting, in Renton, Washington 98055–4056; telephone number: (206) 227–2535. charts for pilot reference. The accordance with R–R Mandatory Service coordinates for this airspace docket are Bulletin (SB) No. RB.211–73–B869, Revision SUPPLEMENTARY INFORMATION: 1, dated May 24, 1996. based on North American Datum 83. (b) Installation of improved FFG’s on both Comments Invited Class E airspace areas extending upward engines for each Boeing 757 aircraft in from 700 feet or more above the surface accordance with paragraph (a) of this AD Interested parties are invited to of the earth are published in Paragraph constitutes terminating action to the participate in this proposed rulemaking 6005 of FAA Order 7400.9C dated requirements of AD 96–04–11. by submitting such written data, views, August 17, 1995, and effective (c) For the purpose of this AD, a shop visit or arguments as they may desire. September 16, 1995, which is is defined as removal of the engine from the Comments that provide the factual basis aircraft for maintenance. incorporated by reference in 14 CFR supporting the views and suggestions 71.1. The Class E airspace designation (d) An alternative method of compliance or presented are particularly helpful in adjustment of the compliance time that listed in this document would be provides an acceptable level of safety may be developing reasoned regulatory published subsequently in the Order. decisions on the proposal. Comments used if approved by the Manager, Engine The FAA has determined that this Certification Office. The request should be are specifically invited on the overall forwarded through an appropriate FAA regulatory, aeronautical, economic, proposed regulation only involves an Principal Maintenance Inspector, who may environmental, and energy related established body of technical add comments and then send it to the aspects of the proposal. regulations for which frequent and Manager, Engine Certification Office. Communications should identify the routine amendments are necessary to Note: Information concerning the existence airspace docket number and be keep them operationally current. It, of approved alternative methods of submitted in triplicate to the address therefore, (1) is not a ‘‘significant compliance with this airworthiness directive, listed above. Commenters wishing the regulatory action’’ under Executive if any, may be obtained from the Engine Order 12866; (2) is not a ‘‘significant Certification Office. FAA to acknowledge receipt of their comments on this notice must submit rule’’ under DOT Regulatory Policies Issued in Burlington, Massachusetts, on and Procedures (44 FR 11034; February May 22, 1996. with those comments a self-addressed, stamped postcard on which the 26, 1979); and (3) does not warrant Robert E. Guyotte, preparation of a regulatory evaluation as Acting Manager, Engine and Propeller following statement is made: ‘‘Comments to Airspace Docket No. 96– the anticipated impact is so minimal. Directorate, Aircraft Certification Service. Since this is a routine matter that will [FR Doc. 96–14866 Filed 6–11–96; 8:45 am] ANM–012.’’ The postcard will be date/ time stamped and returned to the only affect air traffic procedures and air BILLING CODE 4910±13±U commenter. All communications navigation, it is certified that this rule, received on or before the specified when promulgated, will not have a significant economic impact on a 14 CFR Part 71 closing date for comments will be considered before taking action on the substantial number of small entities [Airspace Docket No. 96±ANM±012] proposed rule. The proposal contained under the criteria of the Regulatory Flexibility Act. Proposed Establishment of Class E in this notice may be changed in the Airspace; Grants Pass, Oregon. light of comments received. All List of Subjects in 14 CFR Part 71 comments submitted will be available AGENCY: Federal Aviation for examination at the address listed Airspace, Incorporation by reference, Administration (FAA), DOT. above both before and after the closing Navigation (air).