ML20045H095

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Forwards Documents Comprising Regulatory History of Notice of Final rulemaking,10CFR50.65, Monitoring Effectiveness of Maint at Nuclear Power Plants
ML20045H095
Person / Time
Issue date: 07/01/1993
From: Mate J
NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES)
To: Lanham D
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20045H096 List:
References
FRN-58FR33993, RULE-PR-50 AE55-2-001, AE55-2-1, NUDOCS 9307190053
Download: ML20045H095 (9)
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, DBa, MEMORANDUM FOR:

Donald H. Lanham Nuclear Document System (NUDOCS), Mail Stop Pl-37 Division of Freedom of Information and Publications Branch Office of Information Management Resource Management FROM:

Joseph J. Mate Regulation Development Branch-Division of Regulatory Applications Office of Nuclear Regulatory Research

SUBJECT:

REGULATORY HISTORY INDEX FOR 10 CFR 50.65 -FINAL RULE,

" MONITORING THE EFFECTIVENESS OF MAINTENANCE AT NUCLEAR POWER PLANTS' Enclosed for your processing are the regulatory documents comprising the regulatory history of the Notice of Final Rulemaking entitled, " Monitoring the Effectiveness of Maintenance at Nuclear Power Plants", which amends 10 CFR Part 50.

This notice was published in the Federal Register on Wednesday June 23, 1993 (58 FR 33993).

If you have any questions or if we can be of further assistance, please call me at 492-3795.

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. oseph J. M te Regulations Development Branch Division of Regulatory Applications Office of Nuclear Regulatory Research

Enclosures:

1.

Regulatory History Index 2.

Regulatory History Documents cc: David L. Meyer

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DQYN 9307190053 930701 PDR PR

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50 58FR33993 PDR

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MEMORANDUM FOR:

Donald H. Lanham Nuclear Document System (NUDOCS), Mail Stop Pl-37 Division of Freedom of Information and Publications Branch Office of Information Management-Resource Management i

FROM:

Joseph J. Mate Regulation Development Branch Division of Regulatory Applications Office of Nuclear Regulatory Research

SUBJECT:

REGULATORY HISTORY INDEX FOR 10 CFR 50.65 -FINAL RULE,

" MONITORING THE EFFECTIVENESS OF MAINTENANCE AT NUCLEAR POWER PLANTS' Enclosed for your processing are the regulatory documents comprising the regulatory history of the Notice of Final Rulemaking entitled, " Monitoring the Effectiveness of Maintenance at Nuclear Power Plants", which amends 10 CFR Part 50.

This notice was published in the Federal Register on Wednesday i

June 23, 1993 (58 FR 33993).

If you have any questions or if we can be of further assistance, please call me at 492-3795.

Joseph J. Mate Regulations Development Branch Division of Regulatory Applications Office of Nuclear Regulatory Research

Enclosures:

1.

Regulatory History Index 2.

Regulatory History Documents cc: David L. Meyer Concurre C

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ENCLOSURE

' REGULATORY HISTORY INDEX f

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REGULATORY HISTORY INDEX l.

Federal Register Notice, Nuclear Regulatory Commission,' Proposed Rule, Monitoring the Effectiveness of Maintenance at Nuclear Power Plants, (FR 58 15303).

2.

Public Comments:

a.

Westinghouse Electric Corporation dated April' 23,1993.

b.

Rochester Gas and Electric Corporation dated April 27, 1993.

c.

Tennessee Valley Authority dated April 27, 1993, d.

Souther Nuclear Operating Company dated April 29, 1993.

e.

Wolf Creek Nuclear Operating Corporation dated April 30, 1993.

f.

Georgia Power Company dated May 3, 1993.

g.

Virginia Electric and Power Company dated April 30, 1993.

h.

Nuclear Management and Resources Council dated May 5,1993.

i.

Yankee Atomic Electric Company dated May 5, 1993.

j.

Marvin Lewis dated May 4, 1993.

k.

Consumers Power undated letter.

1.

Texas Utilities Electric dated May 6, 1993.

m.

Florida Power and Light dated May 3, 1993.

n.

Illinois Power dated May 4, 1993.

o.

Northeast Utilities dated May 6, 1993.

p.

Boston Edison dated May 6, 1993.

q.

Philadelphia Electric Company dated May 6,1993.

3.

Note to Richard Correia-NRR, Owen Rothburg-RES, and Hampton Newsome-0GC, from Joseph J. Mate, dated May 19, 1993, and subject, " FINAL RULE, MONITORING.

THE EFFECTIVENESS OF MAINTENANCE AT NUCLEAR POWER PLANTS."

4.

Annotated comments from Hampton Newsome, OGC concerning the May 19,1993' j

note from Joseph J. Mate.

5.

Annotated comments from Richard Correia, NRR concerning the May 19, 1993 note-from Joseph J. Mate.

.l 6.

Memorandum from Eric S. Beckjord, Director Office of Nuclear Regulatory Research, to Edward L. Jordan, Director, AE00, Thomas E. Murley, Director,

a NRR, James Lieberman, Director, OE, Patricia G. Norry, Director, ADM, Gerald F. Cranford, Director, IRM, and Martin G. Malsch, Deputy General dated May 28, 1993 and subject, REVISION OF THE MAINTENANCE RULE (10 CFR 50.65).

7.

Memorandum from Patricia G. Norry, Director, ADM to Eric S. Beckjord, Director Office of Nuclear Regulatory Research, dated June 1,.1993, and subject, OFFICE CONCURRENCE ON FINAL RULE PACKAGE ENTITLED " MONITORING THE EFFECTIVENESS OF MAINTENANCE AT NUCLEAR POWER PLANTS."

8. Note to Joseph Mate, RES from Hampton Newsome, OGC dated June 1, 1993 and subject COMMENTS ON MAINTENANCE RULE AMENDMENT-FINAL PACKAGE.

9.

FAX message to Joe Mate, RES from Beth St Mary, IRM dated June 2, 1993 concerning the Maintenance Rule.

10. Memorandum from Eric S. Beckjord, Director, Office of Nuclear R'egulatory Research to James M. Taylor, Executive Director for Operations, June 4, 1993 and subject REVISION OF THE MAINTENANCE RULE (10 CFR 50.65).
11. Memorandum from Brenda Jo Shelton, Chief, Information and Records Management Branch, Division of Information Support Services /ADM to Michael T.

Lesar, Chief, Rules Review Section, Rules and Directives Review Branch, Division of Freedom of Information and Publications Services /ADM, dated June 10, 1993 and subject, REQUEST FOR COMMENT AND CONCURRENCE ON THE 10 CFR PART 50.65, " MONITORING THE EFFECTIVENESS OF MAINTENANCE AT NUCLEAR POWER PLANTS."

12. Memorandum from Sher Bahadur, Chief,' Regulation Development Branch, Division of Regulatory Applications, Office of Nuclear Regulatory Research to David L. Meyer, Chief, Rules & directives Branch, Division of Freedom of Information and Publication Services, Office of Administration, dated June 11, 1993, and subject IMPLEMENTATION OF ED0 ACTION: FINAL RULE, 10 CFR PART 50, " MONITORING THE EFFECTIVENESS OF MAINTENANCE AT NUCLEAR POWER PLANTS."

13.

Federal Register Notice, Nuclear Regulatory Commission, Final Rule, Monitoring the Effectiveness of Maintenance at Nuclear Power Plants, (FR 58 33993).

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DR Federr.1 Register / Vol 58, No. 53 / Monday, March 22, 1993 / Propo:od Rules 15303'

$ 113.t12 C&ostridium Perfringene Type D once every year io at least onen overy 1992, that instand of annual assessment Torold and Bactorin-Toxokt refueling cycle, but not to excood 24 requirement s. the NRC should ccmsider months.

assossments based on a refueling cyde (c) * *

  • DATES: The comment period expirus on interval. The NUMARC Stooring Group (2) Each of at least eight rabbits, each May C,1993. Comment received after stated that:

weighing 4--8 pounds shall be injocted this date will be considered if it is (t) Significantly more data would be I

subcut:neously with half of the smallest practical to do so.but the Commission evallable during refueling cycles than is host animal dose. A wcond dose shall is able to ensure consideration only for available on an annual basis, be given not less than 20 days not more comments submitted and received on or (2) Key data from some surveillance tests can only be obtained during than 23 days efter the first dose.

before this date, refueling outages and is not available on (3) * *

  • ADDRESSES: Mail written comments to

"" { d er t to maintenance (i) At least soven rabbits are n uirod the Secretary, U. S. Nuchr Regulatory

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to mako an acceptable serum poo.

Commission. Washington DC 20555 activities that may be made after suda (ii) Equal uantitles of serum from Attention: Docketmg and Service ld W icall

""[*I" br a refueling outa e.

eadi rabbit s soll be combined and Uranch. Deliver comments to: One g

n tested as a single poolod serum.

White Flint North,11555 Rockville The NUMARC Steering Gmup further j

l (iiillfless than seven rabbits are File. Rockville, Maryland, between 7:45 edded that the evaluation process is a j

avaliable, the test is invalid and shall be a.m. and 4:15 p.m. on Federal time consuming activity and that with l

repeated: Provided,%st. If the test is Workdays. Copies of commants received limited data available, the annual not repeated, tbe serial shall bo declared may be examined at the NRC Public evaluation would not provide for uns:Usfadory.

Document Room. 2120 L Street NW.

meaningful results. With only limited -

(Lower Level). Washington. DC-data, changes to maintenance programs (5) * *

  • FOR fURTHER ##ORMADON CONTACT:

wi]) likely not be made because there (111)If anymiceInoculated with the Joseph J. Mate, Office of Nuclear would not be sufficient information mixtura of serum with to I. doses of Regulatory Ensearch, U. S. Nuclear avallable for spotting trends or doing Strnd:xd Toxin die;the serum is Regulatory Commission. Washingtm.

trend analysis..

consid red to contain less than 2 DC 20555 telephone (301) 492-3795.

Second. the NRC conducted a Intern:tional Units per ml. and the regulatory review to eliminate or revise g

, gay serialis unsatisfactory..

unnecessarily burdensome regulations Backgmund and published a final rule on August 31,

5. Sedh 113.112 paragraph (c)(5)(iv).Nuch RegulatoryCommission semral regulations identified by its w uldbe removed.

' published the final rule,

  • Requirements Committee to Review Generic Done in Washington, DC. this 15th day of for Monitoring the Effectiveness of Requimments (CRGR).One of those

. March 1991.

Maintenance at Nuclear Power Plants.*-

amended regulations was to CFR 50.71.

R2nneth C. Qayton.

($ 50.G5).%e final rule, which will (e)(Final Safety Analysis Report Actittg Assistant Seweeary. HarActing and become effective July 10,1996, requhes Updates) whom the frequency of Inspection Service.

commbicial nuclear power plant licensee reporting to the NRC was i

IFR Doc. 934481 Ftled 3-1093: a:45 ami licensees to monitor the efiediveness of changed from annually to once par enuseo cooe sm,ww maintenance activities for safety.

mfueling cyda.%e ch was made significant plant equipment in order to because the use of a refue cyde minimize the likelihood of failures and interval provided a more coordinated NUCLEAR REGULATORY

' events caused by the lack of effective and cohesive update since, a snajority of COMutSSION maintenance.Section 50.65(e)(3) design changes and maior modifications requires nuclear power plant limnsees were performed during refueling 10 CFR Part 50 to evaluate the overall effediveness of outages. In addition,it had no adverse their maintenance activities on an impact on the public health and safdy annual basta. An industry consensus and reduced the regulatory burden on fitN 3150-AE55 Monttoring the Effectiveness of guidanos document and a regulatory the limnsees. -

Maktenance at Nucleer Power Plants guide to provide an acceptable

%e Commissionis now proposingto

. methodology for implementing the final change the reqidred frequency of AGENCY: Nuclear Regulatory rule are expected to be published by

' maintenance activity evaluations from anwally to ace per ufueling mtage, Commission-June 30,1993, Evaluatloa of data collected over the genoeg. Pmposed rule-Discueston period of a refuelingcyde willprovide SUMMAR1r:The Nuclear Regulatory Since the Maintenance Rule was a substantially better basis for deteding Commission (NRQ is proposing to.

published in July 1991, two events have problems in degraded performance of l

cmend its regulations for monitoring the occurrod thut bd the Commission to structures, systems, and components l

cffectiveness of maintenance programs reconsider the annual evaluation (SSC's) and wW in maintenance i

at commercial nuclear power plants.

uirements in 5 50.65(a)(3).

practices. Evaluations conduded on a l

The current raWlans require that in the Summer of 1991, the refuelingcycle basis would also nuclear power plant licanaoes evaluate Nuclear Management Resources Coundl consider and int -

to dda evallable performance and condition monitoring (NUMARQ Steering Group was formed onlyduring ref ingoutages with the adivities and assodated goals and to develop an industry guide for data available during operations; under

. preventin maintaaanc= adivities at imp &amersting the Maintenance Rule, the existing requ6 3 this may not -

..While developing the guide,the caut dependin6onwhetherthe annual j

least ennually.%e proposed

amendment would th ange the time twj Steering Group suggested ta the NRC in assessmen0colacides with the refineling >

l Interval for conducting evaluations from :n public meeting held on February 26

-outage. Furthermore,'Wehsstions~of deta' o

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9 15304 Federal Register / Vol. Sa, No. 53 / Monday, March 22,.1993 / ~ Proposed Rules

)

cccumulated over the period of a quality of the maintenance evaluations.

Under the proposed rule, the~

refurling cycle, as opposed to the For these reasons, the Commission finds frequency of perlodic assossments shorter annual period required by the that the proposed amendment will not would change from annually to at least rula, will provide a more meaningful result in any significant increase in once per refueling cycle but not to i

basis for the recognition and either the probability of occurrence of excoed 24 months. Since most refueling interpretation of trends.The an accident or the consequences of an outages normally occur in the 15-to 18-Commission understands that a normal accident and therefore concludes that

. month range, the time between periodic frequ:ncy of refueling outage ranges there will be no significant effect on the assessments assuming a 16-month.

from 15 to 18 months; however, the environment as a result of the proposed average would be increased by about 33 conditions may vary from plant to plant. amendment.

percent. Therefore, the licensee staff in order to ensure that an indefinite The environmental assessment is hours to accomplish a periodic period of time does not occur between available for jnspection at the NRC assessment under the proposed rule maintenance evaluations, the Public Document Room 2120 L Street would be reduced imm approximately Commission is proposing the NW. (lmwer Level) Washington, DC.

460 staff hours to about 310 staff hours establishment of an upper limit of 24 Single copies of the environmental por plant. This would save the licenseo months between the maintenance assessment are available from Joseph J.

appmximately 150 staff hours per plant.

evaluitions.This would address those Mate, Office of Nuclear Regulatory There are no additional changes in costs licensees that have extended their Research, U.S. Nuclear Regulatory to be incurred by the NRC.The refuzling cycle beyond 24 months for Commission, Washington, DC 20555, foregoing constitutes the regulatory any reason including nurnerous short teleptue: (301) 492-3795.

analysis for this proposed rule.

out*ges or extended shutdown periods.

Paperwork Reduction Act St'alement Regulatory Flexibility Certification Although the Commission believes that it is generally the case that maintenance This proposed rule amends the in accordance with the Regulatory evaluations will be more effective if information collection requirements that Flexibility Act of 1980,(5 U.S.C.

conducted in conjunction with refueling are subject to the Paperwork Reduction-605(b)), the Nuclear Regulatory outages, licensees would still have the Act of 1980 (44 U.S.C. 3501 et seq.).

Commission certifies that,if This rule has been submitted to the promulgated, this rule will not have a option of conducting them more f uent!.

Office of Management and Budget for significant economic impact on a 1 light of the above discussion, the review and appmval of the paperwork substantial number of small entitles.

NRC is proposing to change the requirements.

This proposed rule affects only the requirement for evaluation of the overall.

Because the rule will relax existing.

operation of nuclear power plants.The.

enectiveness of maintenance activities recordkeeping requirements, the public companies that own these plants do not to be performed once per. refueling cycle burden for this collection of information fall within the scope of the definition of provided the interval between is expected to be reduced by 150 hours0.00174 days <br />0.0417 hours <br />2.480159e-4 weeks <br />5.7075e-5 months <br /> "small entities" as set forth in the evaluations does not exceed 24 months. per licensee. This reduction includes Regulatory Flexibility Act or the Small the time required for reviewing

-Business Size Standards set out in the I.inding of No Significant instructions, searching existing data regulations issued by the Small EnvironmentalImpact sources, gathering and maintaining the Business Administration at 13 CFR pt rt The Commission has determined that, data needed and completing and 121.

under the National Environmental reviewing the collection of information.

Policy Act of 1969, as amended, and the Send comments regarding the estimated Backfit Analys.

ts Commission's regulations in subpart A burden reduction or any other aspect of The NRC has determined that the of to CFR part 51, that this rule, if this collection of information, including backfit rule,10 CFR 50.109, does not adopted, would not be a major Federal suggestions for mducing this burden, to apply to this proposed rule and, ection that significantly affects the the Information and Records therefore, that a backfit analysis is not quality of the human environment and Management Branch (MNBB-7714),

required. The proposed amendment to therefore an environmental impact U. S. Nuclear Regulatory Commission, the interval for evaluating the' statement is not required.

Washington, DC,20555; and to the Dosk effectiveness of maintenance activities Ths pmposed amendment does not Officer, Office ofInformation and by licensees is considered a relaxation require any change to nuclear power Regulatory Affairs.NEOB-3019,(3150- from the existing requirement and does P ant design or require any 0011), Office of Management and not involve any provisions which would l

modifications to a plant. Nor does the Budget, Washington, DC,20503.

Impose backfits as determined in to ruls change the scope of the CFR 50.109. Further, the option of maintenance rule or affect the nature of Regulatory Analysis conducting an annual review as the sctivities to be performed, e.g.,

The Nuclear Regulatory Commission provided by the current rule would be monitoring, corrective action, and has considered the costs and benefits of retained. Because there are no new assessments of compliance. The the proposed rule. With respect to requirements or procedures imposed on.

proposed rule change would only benefits, the pm90 sed amendment licensees by this proposed rule, it does extend the time period for performing would allow those licensees who choose not impose a backfit.

evaluations of the effectiveness of to exercise the option to perform licensees' maintenance program from at evaluations of their maintenance 1ist of Subjects i

least once a year to at least once every program in con; unction with refueling to CFR Part 50--Antitrust, Classified refueling cycle, not to exceed 24 outages but no : ess frequently than information, Criminal penalty, Fire months. The proposed extension should overy 24 months.The Commission protection, Incorporation by reference, not result in any significant or believes that this additional flexibility Intergovernmental relations, Nuclear discernible reduction in the will not result in any increase in risk to power plants and reactors, Radiation effectiveness of a licensee's the public health and safety, and may protection. Reactor siting criteria, rnalntenance program: rather the change result in a more effective maintenance Reporting and recordkeeping would increase the meaningfulness and and improved plant safety.

requirements.

Y o

Federal Register / Vol, SU, No. 53 / Monday, March 22, 1993 / Proposed Rules 15305 e

For ruasons set out in the preamble an assessment of the total plant Comments may be inspected at this nd under the authority of the Atomic equipment that is out of service should location between 9 a.m. and 3 p.m.,

mergy Act of 1954, as amended, the be taken into account to detennine the Monday through Friday, except. Federal nergy Reorganization Act of 1974, as overall effect on performance of safety holidays.

mended, and 5 U.S.C 553, the NRC is functions.

rOR rURTHER INFORMATION CONTACT:

roposing to adopt the following Donald Eiford, Seattle Aircraft mondment to 10 CFR Part 50.

Deed at Rockville Maryland, this 15th day Curtification Office, Systems and of March 1993.

ART 50--DOMESTIC LICENSING OF Equipment Branch, ANM-130S, FAA, for the Nuclear Regulatory Commission.

Transport Airplane Directorate,1601 RODUCTION AND UTILIZATION

^

lames M. Taylor, Lind Avenue, SW., Renton, Washington Decutive Directorfor Operations.

98055--4056; telephone (206) 227-2675:

1.The authority citation for part 50 (FR Doc. 93-6577 Filed 3-19-93; 8:45 am) fax (206) 227-1811.

antinues to read as follows:

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SUPPLEMENTARY INFORMATION:

Authority: Secs. 102.103.104.105,161.

12.183.186,189,68 Stat. 936,937,938, Comments Invited

18. 953,954,955,956, as amended, sec.

DEPARTMENT OF TRANSPORTATION Interested persons are invited to

34. 83 Stat.1244, as amended (42 U.S.C participato in the making of the 132,2133,2134,2135,2201,2232,2233 Federal Aviation Administration proposed rule by submitting such 236,2239,2282); secs. 201, as amenried*

written data, views, or arguments as

12. 206,88 Stat.1242, as amended.1244 14 CFR Part 39 theY maY esire. Communications shall i

d t46. (42 U.S.C 5841,5842,5846).

Section 50.7 also issued under Pub. L 95-(Docket No. 90-NM-265-AD) identify the Rules Docket number and j

11. sec.10,92 Stat. 2951 (42 U.S.C 5851).

be submitted in triplicate in the address

]

etnon 50.10 also issued under secs.101 Airworthineas Directives; Boeing specified above. All communications a

15,68 Stit. 955, as amended, (42 U.S.C Model727 Series Airplanes a31,2235); seca.102, Pub. L 91-190. 83 received on or before the closing date y

Et. 853 (42 U.S.C 4332). Sections 50.13 AGENCY: Federal Aviation for comments, specified above, will be d

1.54(dd). end 50.103 also issued under sec.

Admmistration, DOT, considered before taking action on the 2

pro osed rule.The p osals contained 48,68 Stit. 939, as amended, (42 U.S.C

, ACTION: Supplemental notice of in i is notice may be changed in light d

', 8(s

' $ da Itaf'9 5(42. proposed rulemaking; reopening of of the comments received.

de 1

.S.C 2235). Sections 50.33a,50.55a and c mment peno.

Comments are specifically invited on j

SUMMARY

This document revises an the overall regulatory, economic, PPendix Q *!$o issued under sec.102, Pub.91-190. 83 Stat. 853 (42.U.S.C 4332).

earlier proposed airworthiness directive envir nmental, and energy aspects of

(

ctions 50.34 and 50.54 also issued under (AD)* aEP cable to BoeinEModel 727 the proposed rule. All comments li

c. 204,88 Stat.1245 (42 U.S.C 5844).

etions 50.58,50.91, and 50.92 also issued series al aries, which would have submitted will be available, both before ider Pub. L 97-415,96 Stat. 2073 (42 supersed an existing AD that and after the closing date for comments, S.C 2239). Section 50.78 also issued under currently requires periodic leak checks in the Rules Docket for examination bY c.122,68 Stat. 939 (42 U.S.C 2152).

of the forward lavatory drain system and interested persons. A report ctions 50.80-50.81 also issued under sec.

provides for the installation of a new summanzing each FAA public c-atact

4. 68 St
1. 954, as amended, (42 U.S.C drain valve as terminating action. The conce(ned with the substance of dus PmPosal will be file ~d in the Rules

.34). Appendix F also issued under sec-

7,68 Stat. 955 (42 U.S.C 2237),

proposed action would have deleted the OO existing $d haverovision for terminating action and wou utred repetitive leak Commenters wishing th'e FAA to

2. In $ 50.65, paragraph (a)(3) is vised to read as follows:

checks of both th orward and aft acknowledge receipt of their com,ments lavatcry drain systems..That proposal submitted in response to this notice 30.6 5 Requiremente for monitoring the was pro tod by reports of engine and must submit a self2 addressed, stamped airframe 7amage, engine separation, and p stcard on which the following factiveneas of malruenance at nuclear' cau kby btu co' hat ha otrned ck t ur r9 NM 6 A " The (3) Performance and condition f

drain p stcard will be date stamped and omtoring activities and associated from leakinf orward lavato 11d returned to the commenter.

ivities shall e a uated at e st dis ge fro t airplan.This action Availability of NPRMs ery refueling cycle provided the revises the proposal by adding an.

I NPRM b>erson may obtain a copy of this Any terval between evaluations does not pti nal procedure for complying with y submitting a request to the

.ceed 24 months. The evaluations shall the rule which entails revising the FAA-

, conducted taking into account, where approved maintenance program i FAA Transport Airplane Directorate, ANM-103, Attention: Rules Docket No, acticel, industry-wide operating inC TPorate a schedule and procedure t 90-NM-265-AD,1601 Lind Avenue, peritnce. Adjustments shall be made conduct leak checks of te lavatory SW., Renton, Washington'98055-4056. hert necessary to ensure that the drain systems.- t Com' ents inust be received no Discussion ijectiva of preventative failures of DATES: m uctures, systems, and components later than May 6,1993. A proposal to amend part 39 of the n - 1 rough maintenance is appropriately ADDRESSES: Submit comments in Federal Aviation Regulations by. l dznced against the objective of triplicate to the Federal Aviation superseding AD 86-05-o7, Amendment inimir.ing unavailability of structures. Administration (FAA), Transport 39-5250 (51 FR 7767 March 6,1986).. stems, cod components due to Airplane DirectoratK ANMd103, applicable to all Boeing Model 727, onitoring or preventative < Attention: Ruh>s Docket No. 90-NM-series airplanes, was published'as a ~ i ainten:nce.;ln performing inonitoring : 265-AD;1601 Lind Av6nue'SW., notice of proposed rule lmskin' lNPJU4) r ) g / id preventative maintenance activitiesi Renton, WashinEton 980$5-4056, in the Fede'ral Register on January i0l, ', j l I .. _ -,}}

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