Federal Register / Vol. 82, No. 193 / Friday, October 6, 2017 / Proposed Rules 46719 

Reactors,’’ Revision 0, 1976 (ADAMS 

Accession No. ML17266A005), Revision 

1 (ADAMS Accession No. 

ML17266A006)); 

(3) Branch Technical Position 

Auxiliary Power Conversion Systems 

Branch 9.5–1, ‘‘Guidelines for Fire 

Protection for Nuclear Power Plants,’’ 

May 1, 1976 (ADAMS Accession No. 

ML070660461), Revision 1, May 13, 

1979 (ADAMS Accession No. 

ML070660450); and Appendix A, 

‘‘Guidelines for Fire Protection for 

Nuclear Power Plants Docketed Prior to 

July 1, 1976,’’ August 23, 1976 (ADAMS 

Accession No. ML15322A269), and 

February 24, 1977 (ADAMS Accession 

No. ML070660458); 

(4) NUREG–0050, ‘‘Recommendations 

Related to Browns Ferry Fire,’’ February 

1976 (ADAMS Accession No. 

ML070520452); 

(5) NRC Generic Letter 1980–100, 

‘‘Appendix R to 10 CFR Regarding Fire 

Protection—Federal Register Notice,’’ 

November 24, 1980 (ADAMS Accession 

No. ML070220242); 

(6) NRC Generic Letter 1981–012, 

‘‘Fire Protection Rule (45 FR 76602, 

November 19, 1980),’’ February 20, 1981 

(ADAMS Accession No. ML031080537); 

(7) NRC Generic Letter 1986–010, 

‘‘Implementation of Fire Protection 

Requirements,’’ April 24, 1986 (ADAMS 

Accession No. ML031150322); 

(8) NRC Generic Letter 1988–012, 

‘‘Removal of Fire Protection 

Requirements from Technical 

Specifications,’’ August 2, 1988 

(ADAMS Accession No. ML031150471); 

(9) NRC Information Notice No. 1997– 

048, ‘‘Inadequate or Inappropriate 

Interim Fire Protection Compensatory 

Measures,’’ July 9, 1997 (ADAMS 

Accession No. ML070180068); 

(10) NRC Bulletin 1992–01, ‘‘Failure 

of Thermo-Lag 330 Fire Barrier System 

to Maintain Cabling in Wide Cable 

Trays and Small Conduits Free from 

Fire Damage,’’ June 24, 1992 (ADAMS 

Accession No. ML031250239); 

(11) NRC Regulatory Issue Summary 

2005–007, ‘‘Performance of Manual 

Actions to Satisfy the Requirements of 

10 CFR part 50 Appendix R Section 

III.G.2.,’’ April 19, 2005 (ADAMS 

Accession No. ML042360547); 

(12) NRC Regulatory Guide 1.189, 

‘‘Fire Protection for Nuclear Power 

Plants,’’ Revision 2, October 2009 

(ADAMS Accession No. ML092580550); 

(13) NRC Regulatory Guide 1.205, 

‘‘Risk-Informed, Performance-Based Fire 

Protection for Existing Light-Water 

Nuclear Power Plants,’’ Revision 0, May 

2006 (ADAMS Accession No. 

ML061100174); Revision 1, December 

2009 (ADAMS Accession No. 

ML092730314); and 

(14) NUREG/CR–7135, 

‘‘Compensatory and Alternative 

Regulatory Measures for Nuclear Power 

Plant Fire Protection (CARMEN–FIRE),’’ 

Final Report, August 2015 (ADAMS 

Accession No. ML15226A446). 

The petitioners assert that these 

guidance documents associated with the 

current regulations are deficient for 

three reasons: 

(1) They are not regulations and, 

therefore, convey unenforceable 

expectations; 

(2) They create confusion for 

licensees, NRC inspectors and 

reviewers, and the public about what 

constitutes an acceptable substitute for 

compliance with fire protection 

regulations following identification of a 

deficiency, as well as the permissible 

durations of the substitutions; and 

(3) They were not developed through 

an open process, so the public did not 

have opportunities to weigh in on the 

acceptability of various compensatory 

measures. 

The petitioners assert that a proposed 

rulemaking would ensure that 

compensatory measures are used 

appropriately following a violation in 

fire protection regulations, and that the 

rulemaking process would provide the 

public the opportunity to weigh in on 

the appropriateness of the use of various 

compensatory measures before the 

requirements are adopted as final. The 

petitioners also assert that a final rule 

would clear up any current confusion 

caused by the guidance documents for 

the NRC’s licensees and inspectors and 

would provide enforceable requirements 

for the NRC. 

Dated at Rockville, Maryland, this 2nd day 

of October 2017. 

For the Nuclear Regulatory Commission. 

Annette L. Vietti-Cook, 

Secretary of the Commission. 

[FR Doc. 2017–21544 Filed 10–5–17; 8:45 am] 

BILLING CODE 7590–01–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2017–0904; Product 

Identifier 2017–NM–071–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for certain 

The Boeing Company Model 787–8 and 

787–9 airplanes. This proposed AD was 

prompted by a report of an in-service 

reliability issue of a latent flow sensor 

failure combined with single cabin air 

compressor (CAC) operation. This 

condition resulted in reduced airflow 

which led to a persistent single CAC 

surge condition that caused overheat 

damage to the CAC inlet. This proposed 

AD would require installing new pack 

control unit (PCU) software for the cabin 

air conditioning and temperature 

control system (CACTCS) and new CAC 

outlet pressure sensor J-tube hardware, 

and doing related investigative and 

corrective actions if necessary. We are 

proposing this AD to address the unsafe 

condition on these products. 

DATES: We must receive comments on 

this proposed AD by November 20, 

2017. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, by any of the following 

methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov. Follow the 

instructions for submitting comments. 

• Fax: 202–493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC 20590. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this NPRM, contact Boeing Commercial 

Airplanes, Attention: Contractual & Data 

Services (C&DS), 2600 Westminster 

Blvd., MC 110 SK57, Seal Beach, CA 

90740–5600; telephone: 562–797–1717; 

Internet: https://www.myboeing

fleet.com. You may view this service 

information at the FAA, Transport 

Standards Branch, 1601 Lind Avenue 

SW., Renton, WA. For information on 

the availability of this material at the 

FAA, call 425–227–1221. It is also 

available on the Internet at http://

www.regulations.gov by searching for 

and locating Docket No. FAA–2017– 

0904. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http://

www.regulations.gov by searching for 

and locating Docket No. FAA–2017– 

0904; or in person at the Docket 

Management Facility between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. The AD docket 


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46720 Federal Register / Vol. 82, No. 193 / Friday, October 6, 2017 / Proposed Rules 

contains this NPRM, the regulatory 

evaluation, any comments received, and 

other information. The street address for 

the Docket Office (phone: 800–647– 

5527) is in the ADDRESSES section. 

Comments will be available in the AD 

docket shortly after receipt. 

FOR FURTHER INFORMATION CONTACT: 

Caspar Wang, Aerospace Engineer, 

Cabin Safety and Environmental 

Systems Section, FAA, Seattle ACO 

Branch, 1601 Lind Avenue SW., Renton, 

WA 98057–3356; phone: 425–917–6414; 

fax: 425–917–6590; email: 

caspar.wang@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposal. Send your comments to 

an address listed under the ADDRESSES

section. Include ‘‘Docket No. FAA– 

2017–0904; Product Identifier 2017– 

NM–071–AD’’ at the beginning of your 

comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this NPRM. We will consider 

all comments received by the closing 

date and may amend this NPRM 

because of those comments. 

We will post all comments we 

receive, without change, to http://

www.regulations.gov, including any 

personal information you provide. We 

will also post a report summarizing each 

substantive verbal contact we receive 

about this NPRM. 

Discussion 

Boeing Model 787–8 and 787–9 

airplanes have two air conditioning 

packs, one on each side of the airplane. 

Each pack contains two CACs that 

function together under normal 

operating conditions. The Smarter 

Environmental Control System ensures 

that airflow is distributed equally across 

the CACs. If the airflow is low, a single 

operating CAC on a pack can be driven 

into an undetected surge. We have 

received a report of an in-service 

reliability issue involving a latent flow 

sensor failure combined with single 

CAC operation, which resulted in 

reduced airflow and a persistent single 

CAC surge condition. During the surge, 

the temperature exceeded the 450- 

degree Fahrenheit maximum allowable 

temperature and generated enough heat 

energy to degrade the structural 

integrity of the CAC inlet. The PCU 

software logic was only designed to 

detect the surge when both CACs were 

operating on the same pack, and 

therefore, it was unable to detect a 

persistent single CAC surge condition 

which led to CAC inlet overheating. 

This overheating condition resulted in 

structural degradation of the CAC inlet, 

fumes in the cabin and flight deck, and 

interruption to in-service air 

conditioning. 

In addition, we received a report of an 

in-service event involving foreign object 

debris in the CAC inlet and 

accumulation at the ozone converter 

that also led to a persistent single CAC 

surge resulting in overheat damage to 

the CAC inlet housing. The proposed 

PCU software change would redistribute 

the airflow to provide more flow to a 

single CAC, reducing the potential for a 

CAC surge. Reduced airflow leading to 

persistent CAC surge conditions and 

CAC inlet overheating, if not corrected, 

could result in structural degradation of 

the CAC inlet, and fumes in the cabin 

and flight deck, as well as causing 

interruption to in-service air 

conditioning. 

Related Service Information Under 1 

CFR Part 51 

We reviewed Boeing Service Bulletin 

B787–81205–SB210075–00, Issue 003, 

dated March 29, 2017; and Boeing 

Service Bulletin B787–81205– 

SB210077–00, Issue 003, dated October 

20, 2016. The service information 

describes procedures for installing new 

PCU software for the CACTCS and new 

CAC outlet pressure sensor J-tube 

hardware, and doing related 

investigative and corrective actions. 

These documents are distinct since they 

apply to different airplane models. This 

service information is reasonably 

available because the interested parties 

have access to it through their normal 

course of business or by the means 

identified in the ADDRESSES section. 

FAA’s Determination 

We are proposing this AD because we 

evaluated all the relevant information 

and determined the unsafe condition 

described previously is likely to exist or 

develop in other products of the same 

type design. 

Proposed AD Requirements 

This proposed AD would require 

accomplishing the actions specified in 

the service information described 

previously. For information on the 

procedures and compliance times, see 

this service information at http://

www.regulations.gov by searching for 

and locating Docket No. FAA–2017– 

0904. 

The phrase ‘‘related investigative 

actions’’ is used in this proposed AD. 

Related investigative actions are followon actions that (1) are related to the 

primary action, and (2) further 

investigate the nature of any condition 

found. Related investigative actions in 

an AD could include, for example, 

inspections. 

The phrase ‘‘corrective actions’’ is 

used in this proposed AD. Corrective 

actions correct or address any condition 

found. Corrective actions in an AD 

could include, for example, repairs. 

Costs of Compliance 

We estimate that this proposed AD 

affects 62 airplanes of U.S. registry. We 

estimate the following costs to comply 

with this proposed AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Software Installation ........................................ 1 work-hour × $85 per hour = $85 ................. $0 $85 $5,270 

Modify Left and Right Inboard and Outboard 

CAC Modules.

20 work-hours × $85 per hour = $1,700 ........ 22,821 24,521 1,520,302 

We have received no definitive data 

that would enable us to provide cost 

estimates for the on-condition actions 

specified in this proposed AD. 

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: 

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 


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Federal Register / Vol. 82, No. 193 / Friday, October 6, 2017 / Proposed Rules 46721 

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. 

This proposed AD is issued in 

accordance with authority delegated by 

the Executive Director, Aircraft 

Certification Service, as authorized by 

FAA Order 8000.51C. In accordance 

with that order, issuance of ADs is 

normally a function of the Compliance 

and Airworthiness Division, but during 

this transition period, the Executive 

Director has delegated the authority to 

issue ADs applicable to transport 

category airplanes to the Director of the 

System Oversight Division. 

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), 

(3) Will not affect intrastate aviation 

in Alaska, and 

(4) 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. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

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. 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive (AD): 

The Boeing Company: Docket No. FAA– 

2017–0904; Product Identifier 2017– 

NM–071–AD. 

(a) Comments Due Date 

We must receive comments by November 

20, 2017. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to The Boeing Company 

Model 787–8 and 787–9 airplanes, 

certificated in any category, as identified in 

the applicable service information specified 

in paragraphs (c)(1) and (c)(2) of this AD. 

(1) Boeing Service Bulletin B787–81205– 

SB210075–00, Issue 003, dated March 29, 

2017 (for Model 787–8 airplanes). 

(2) Boeing Service Bulletin B787–81205– 

SB210077–00, Issue 003, dated October 20, 

2016 (for Model 787–9 airplanes). 

(d) Subject 

Air Transport Association (ATA) of 

America Code 21, Air conditioning. 

(e) Unsafe Condition 

This AD was prompted by a report of an 

in-service reliability issue involving a latent 

flow sensor failure combined with single 

cabin air compressor (CAC) operation. This 

condition resulted in reduced airflow which 

led to a persistent single CAC surge condition 

that caused overheat damage to the CAC 

inlet. We are issuing this AD to prevent CAC 

inlet overheating leading to structural 

degradation of the CAC inlet, fumes in the 

cabin and flight deck, and interruption to inservice air conditioning. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Software and Hardware Installation 

Within 36 months after the effective date 

of this AD: Install new pack control unit 

software for the cabin air conditioning and 

temperature control system and new CAC 

outlet pressure sensor J-tube hardware, and 

do all applicable related investigative and 

corrective actions; in accordance with the 

Accomplishment Instructions of the 

applicable service information specified in 

paragraphs (g)(1) or (g)(2) of this AD. Related 

investigative and corrective actions must be 

done before further flight. 

(1) For Boeing Model 787–8 airplanes: 

Boeing Service Bulletin B787–81205– 

SB210075–00, Issue 003, dated March 29, 

2017. 

(2) For Boeing Model 787–9 airplanes: 

Boeing Service Bulletin B787–81205– 

SB210077–00, Issue 003, dated October 20, 

2016. 

(h) Credit for Previous Actions 

This paragraph provides credit for the 

actions specified in paragraph (g) of this AD, 

if those actions were performed before the 

effective date of this AD using the applicable 

service information specified in paragraphs 

(h)(1) or (h)(2) of this AD. 

(1) Boeing Service Bulletin B787–81205– 

SB210075–00, Issue 002, dated May 11, 2016 

(for Model 787–8 airplanes). 

(2) Boeing Service Bulletin B787–81205– 

SB210077–00, Issue 002, dated May 11, 2016 

(for Model 787–9 airplanes). 

(i) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Seattle ACO Branch, 

FAA, has the authority to approve AMOCs 

for this AD, if requested using the procedures 

found in 14 CFR 39.19. In accordance with 

14 CFR 39.19, send your request to your 

principal inspector or local Flight Standards 

District Office, as appropriate. If sending 

information directly to the manager of the 

certification office, send it to the attention of 

the person identified in paragraph (j)(1) of 

this AD. Information may be emailed to: 9- 

ANM-Seattle-ACO-AMOC-Requests@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(3) An AMOC that provides an acceptable 

level of safety may be used for any repair, 

modification, or alteration required by this 

AD if it is approved by the Boeing 

Commercial Airplanes Organization 

Designation Authorization (ODA) that has 

been authorized by the Manager, Seattle ACO 

Branch, to make those findings. To be 

approved, the repair method, modification 

deviation, or alteration deviation must meet 

the certification basis of the airplane, and the 

approval must specifically refer to this AD. 

(j) Related Information 

(1) For more information about this AD, 

contact Caspar Wang, Aerospace Engineer, 

Cabin Safety and Environmental Systems 

Section, FAA, Seattle ACO Branch, 1601 

Lind Avenue SW., Renton, WA 98057–3356; 

phone: 425–917–6414; fax: 425–917–6590; 

email: caspar.wang@faa.gov. 

(2) For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, Attention: Contractual & Data 

Services (C&DS), 2600 Westminster Blvd., 

MC 110 SK57, Seal Beach, CA 90740–5600; 

telephone: 562–797–1717; Internet: https://

www.myboeingfleet.com. You may view this 

service information at the FAA, Transport 

Standards Branch, 1601 Lind Avenue SW., 

Renton, WA. For information on the 

availability of this material at the FAA, call 

425–227–1221. 

Issued in Renton, Washington, on 

September 25, 2017. 

Dionne Palermo, 

Acting Director, System Oversight Division, 

Aircraft Certification Service. 

[FR Doc. 2017–21365 Filed 10–5–17; 8:45 am] 

BILLING CODE 4910–13–P 


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