37766 Federal Register / Vol. 83, No. 149 / Thursday, August 2, 2018 / Proposed Rules 

specified compliance time unless it has 

already been accomplished prior to that time. 

(f) Required Actions 

(1) Within 25 hours time-in-service: 

(i) For helicopters with a S/N 33001 

through 33213, 34001 through 34036, and 

36001 through 36086, replace the inverter 

with inverter P/N 412–375–079–105. 

(ii) For helicopters with a S/N 36087 

through 36648, 36650 through 36657, 36660 

through 36672, 36674 through 36680, 36685, 

36687, 36689, 36691, 36693, 36695, and 

37002 through 37012, install retrofit kit P/N 

412–704–058–103 and replace the inverter 

with inverter P/N 412–375–079–105. 

(2) After accomplishing the actions 

required by paragraph (f)(1) of this AD, you 

may remove the placard and Rotorcraft Flight 

Manual limitations, required by AD 2015– 

04–04, prohibiting night operations and 

restricting flights to visual flight rules. 

(3) After the effective date of this AD, do 

not install an inverter P/N 412–375–079–101 

or 412–375–079–103 on any helicopter. 

(g) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, DSCO, FAA, may 

approve AMOCs for this AD. Send your 

proposal to: Tim Beauregard, Aviation Safety 

Engineer, DSCO Branch, AIR–7J0, FAA, 

10101 Hillwood Pkwy, Fort Worth, TX 

76177; telephone 817–222–5190; email 9– 

ASW–190–COS@faa.gov. 

(2) For operations conducted under a 14 

CFR part 119 operating certificate or under 

14 CFR part 91, subpart K, we suggest that 

you notify your principal inspector, or 

lacking a principal inspector, the manager of 

the local flight standards district office or 

certificate holding district office before 

operating any aircraft complying with this 

AD through an AMOC. 

(h) Additional Information 

Bell Alert Service Bulletin 412–15–164, 

dated March 13, 2015, and Bell Alert Service 

Bulletin 412–16–171, dated March 22, 2016, 

which are not incorporated by reference, 

contain additional information about the 

subject of this AD. For service information 

identified in this AD, contact Bell Helicopter 

Textron, Inc., P.O. Box 482, Fort Worth, TX 

76101; telephone (817) 280–3391; fax (817) 

280–6466; or at http://www.bellcustomer.

com/files/. You may review this service 

information at the FAA, Office of the 

Regional Counsel, Southwest Region, 10101 

Hillwood Pkwy., Room 6N–321, Fort Worth, 

TX 76177. 

(i) Subject 

Joint Aircraft Service Component (JASC) 

Code: 2422, AC Inverter. 

Issued in Fort Worth, Texas, on June 19, 

2018. 

Scott A. Horn, 

Deputy Director for Regulatory Operations, 

Compliance and Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2018–16495 Filed 8–1–18; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2018–0637; Product 

Identifier 2018–NM–091–AD] 

RIN 2120–AA64 

Airworthiness Directives; Airbus SAS 

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 

Airbus SAS Model A350–941 airplanes. 

This proposed AD was prompted by 

leakage of shrouded pipe T-boxes in the 

potable water system. This proposed AD 

would require replacement of the 

affected potable water T-boxes and 

clamps with new parts. We are 

proposing this AD to address the unsafe 

condition on these products. 

DATES: We must receive comments on 

this proposed AD by September 17, 

2018. 

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 Airbus SAS, 

Airworthiness Office—EAL, Rond-Point 

Emile Dewoitine No: 2, 31700 Blagnac 

Cedex, France; telephone +33 5 61 93 36 

96; fax +33 5 61 93 45 80; email 

continued-airworthiness.a350@

airbus.com; internet http://

www.airbus.com. You may view this 

service information at the FAA, 

Transport Standards Branch, 2200 

South 216th St., Des Moines, WA. For 

information on the availability of this 

material at the FAA, call 206–231–3195. 

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–2018– 

0637; or in person at Docket Operations 

between 9 a.m. and 5 p.m., Monday 

through Friday, except Federal holidays. 

The AD docket contains this NPRM, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for Docket Operations 

(phone: 800–647–5527) is in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: 

Kathleen Arrigotti, Aerospace Engineer, 

International Section, Transport 

Standards Branch, FAA, 2200 South 

216th St., Des Moines, WA 98198; 

telephone and fax 206–231–3218. 

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– 

2018–0637; Product Identifier 2018– 

NM–091–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 

The European Aviation Safety Agency 

(EASA), which is the Technical Agent 

for the Member States of the European 

Union, has issued EASA Airworthiness 

Directive 2018–0111R1, dated May 30, 

2018 (referred to after this as the 

Mandatory Continuing Airworthiness 

Information, or ‘‘the MCAI’’), to correct 

an unsafe condition for certain Airbus 

SAS Model A350–941 airplanes. The 

MCAI states: 

During a pressure test on the A350 Final 

Assembly Line (FAL), leakage was observed 

on the potable water system shrouded pipes, 

due to a crack failure on the T-Boxes. 

Leakage of a primary pipe may cause water 

ingress into the avionics bay. Additionally, 

during another pressure proof test on the 

A350 FAL, loss of torque was detected on the 

clamps used to attach the shrouded pipes on 

the T-Boxes. 

This condition, if not corrected, could lead 

to loss of systems/equipment located inside 

the avionics bay, possibly resulting in an 

unsafe condition. 

Prompted by these findings, Airbus 

developed improved potable water T-Boxes 


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Federal Register / Vol. 83, No. 149 / Thursday, August 2, 2018 / Proposed Rules 37767 

and clamps, which are embodied in 

production through Airbus mod 111435 or 

mod 111440, and introduced in service 

through the SB [Service Bulletin]. 

For the reasons described above, this 

[EASA] AD requires replacement of the 

affected potable water shrouded pipe TBoxes and clamps with new parts. 

This [EASA] AD was revised to exclude 

post-mod 111440 aeroplanes from the 

Applicability. 

This condition, if not corrected, could 

lead to the loss of systems/equipment 

located inside the avionics bay and 

possible loss of control of the airplane. 

You may examine the MCAI in the AD 

docket on the internet at http://

www.regulations.gov by searching for 

and locating Docket No. FAA–2018– 

0637. 

Related Service Information Under 1 

CFR Part 51 

Airbus SAS has issued Service 

Bulletin A350–38–P004, dated April 11, 

2018. This service information describes 

procedures for replacing the affected 

potable water T-boxes and clamps with 

new parts. 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 

This product has been approved by 

the aviation authority of another 

country, and is approved for operation 

in the United States. Pursuant to our 

bilateral agreement with the State of 

Design Authority, we have been notified 

of the unsafe condition described in the 

MCAI and service information 

referenced above. 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 

on other products of the same type 

design. 

Proposed Requirements of This NPRM 

This proposed AD would require 

accomplishing the actions specified in 

the service information described 

previously. 

Explanation of Change to Applicability 

We have revised the applicability of 

this AD to identify model designations 

as published in the most recent type 

certificate data sheet for the affected 

model. 

Costs of Compliance 

We estimate that this proposed AD 

affects 7 airplanes of U.S. registry. We 

estimate the following costs to comply 

with this proposed AD: 

ESTIMATED COSTS

Labor cost Parts cost Cost per product Cost on U.S. operators 

Up to 16 work-hours × $85 per hour = $1,360 ............... Up to $2,050 ...................... Up to $3,410 ...................... Up to $23,870. 

According to the manufacturer, some 

or all of the costs of this proposed AD 

may be covered under warranty, thereby 

reducing the cost impact on affected 

individuals. We do not control warranty 

coverage for affected individuals. As a 

result, we have included all known 

costs in our cost estimate. 

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 

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): 

Airbus SAS: Docket No. FAA–2018–0637; 

Product Identifier 2018–NM–091–AD. 

(a) Comments Due Date 

We must receive comments by September 

17, 2018. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Airbus SAS Model 

A350–941 airplanes, certificated in any 

category, except those on which Airbus SAS 

modification (mod) 111435 or mod 111440 

has been embodied in production. 


daltland on DSKBBV9HB2PROD with PROPOSALS
37768 Federal Register / Vol. 83, No. 149 / Thursday, August 2, 2018 / Proposed Rules 

(d) Subject 

Air Transport Association (ATA) of 

America Code 38, Water/waste. 

(e) Reason 

This AD was prompted by leakage of 

shrouded pipe T-boxes in the potable water 

system. We are issuing this AD to address the 

possible leakage of water into the avionics 

bay. This condition, if not corrected, could 

lead to the loss of systems/equipment located 

inside the avionics bay and possible loss of 

control of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Within 36 months after the effective date 

of this AD: Replace the affected potable water 

T-boxes and clamps with new parts in 

accordance with the Accomplishment 

Instructions of Airbus Service Bulletin A350– 

38–P004, dated April 11, 2018. 

(h) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, International 

Section, Transport Standards 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 International Section, send it 

to the attention of the person identified in 

paragraph (i)(2) of this AD. Information may 

be emailed to: 9–ANM–116–AMOC– 

REQUESTS@faa.gov. 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. 

(2) Contacting the Manufacturer: For any 

requirement in this AD to obtain corrective 

actions from a manufacturer, the action must 

be accomplished using a method approved 

by the Manager, International Section, 

Transport Standards Branch, FAA; or the 

European Aviation Safety Agency (EASA); or 

Airbus SAS’s EASA Design Organization 

Approval (DOA). If approved by the DOA, 

the approval must include the DOAauthorized signature. 

(3) Required for Compliance (RC): If any 

service information contains procedures or 

tests that are identified as RC, those 

procedures and tests must be done to comply 

with this AD; any procedures or tests that are 

not identified as RC are recommended. Those 

procedures and tests that are not identified 

as RC may be deviated from using accepted 

methods in accordance with the operator’s 

maintenance or inspection program without 

obtaining approval of an AMOC, provided 

the procedures and tests identified as RC can 

be done and the airplane can be put back in 

an airworthy condition. Any substitutions or 

changes to procedures or tests identified as 

RC require approval of an AMOC. 

(i) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) EASA 

Airworthiness Directive 2018–0111R1, dated 

May 30, 2018, for related information. This 

MCAI may be found in the AD docket on the 

internet at http://www.regulations.gov by 

searching for and locating Docket No. FAA– 

2018–0637. 

(2) For more information about this AD, 

contact Kathleen Arrigotti, Aerospace 

Engineer, International Section, Transport 

Standards Branch, FAA, 2200 South 216th 

St., Des Moines, WA 98198; telephone and 

fax 206–231–3218. 

(3) For service information identified in 

this AD, contact Airbus SAS, Airworthiness 

Office—EAL, Rond-Point Emile Dewoitine 

No: 2, 31700 Blagnac Cedex, France; 

telephone +33 5 61 93 36 96; fax +33 5 61 

93 45 80; email continuedairworthiness.a350@airbus.com; internet 

http://www.airbus.com. You may view this 

service information at the FAA, Transport 

Standards Branch, 2200 South 216th St., Des 

Moines, WA. For information on the 

availability of this material at the FAA, call 

206–231–3195. 

Issued in Des Moines, Washington, on July 

23, 2018. 

James Cashdollar, 

Acting Director, System Oversight Division, 

Aircraft Certification Service. 

[FR Doc. 2018–16488 Filed 8–1–18; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2018–0638; Product 

Identifier 2018–NM–016–AD] 

RIN 2120–AA64 

Airworthiness Directives; Viking Air 

Limited (Type Certificate Previously 

Held by Bombardier, Inc.; Canadair 

Limited) Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to supersede 

Airworthiness Directive (AD) 2013–11– 

03, which applies to certain Viking Air 

Limited Model CL–215–1A10 and CL– 

215–6B11 (CL–215T Variant) airplanes. 

AD 2013–11–03 requires repetitive 

detailed inspections for cracking of the 

left-hand (LH) and right-hand (RH) wing 

lower skin, and repair if necessary. AD 

2013–11–03 was prompted by reports of 

a fractured wing lower rear spar cap and 

reinforcing strap. Since we issued AD 

2013–11–03, further analysis has 

indicated the need for repetitive eddy 

current and borescope inspections. This 

proposed AD would require repetitive 

borescope inspections of the LH and RH 

wing lower skin and repetitive eddy 

current inspections of the LH and RH 

wing front and rear lower spar caps. We 

are proposing this AD to address the 

unsafe condition on these products. 

DATES: We must receive comments on 

this proposed AD by September 17, 

2018. 

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 Viking Air Limited, 

1959 de Havilland Way, Sidney, British 

Columbia V8L 5V5, Canada; telephone 

+1–250–656–7227; fax +1–250–656– 

0673; email acs-technical.publications@

vikingair.com; internet http://

www.vikingair.com. You may view this 

referenced service information at the 

FAA, Transport Standards Branch, 2200 

South 216th St., Des Moines, WA. For 

information on the availability of this 

material at the FAA, call 206–231–3195. 

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–2018– 

0638; 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 

contains this NPRM, the regulatory 

evaluation, any comments received, and 

other information. The street address for 

the Docket Operations office (telephone 

800–647–5527) is in the ADDRESSES

section. Comments will be available in 

the AD docket shortly after receipt. 

FOR FURTHER INFORMATION CONTACT: 

Andrea Jimenez, Aerospace Engineer, 

Airframe and Mechanical Systems 

Section, FAA, New York ACO Branch, 

1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; telephone 516– 

228–7330; fax 516–794–5531. 

SUPPLEMENTARY INFORMATION: 


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