Federal Register / Vol. 83, No. 121 / Friday, June 22, 2018 / Proposed Rules 29059 

Issued in Des Moines, Washington, on June 

12, 2018. 

Michael Kaszycki, 

Acting Director, System Oversight Division, 

Aircraft Certification Service. 

[FR Doc. 2018–13333 Filed 6–21–18; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2018–0548; Product 

Identifier 2017–NM–184–AD] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc., 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 

Bombardier, Inc., Model DHC–8–400 

series airplanes. This proposed AD was 

prompted by a report of broken Pclamps on the pressure relief line and 

the motive flow line in the left and right 

fuel tanks, and fouling conditions 

between the motive flow line and the 

collector tank partition wall in both fuel 

tanks. This proposed AD would require, 

depending on airplane configuration: 

Increasing the hole size in the collector 

tank partition wall, inspecting the 

motive flow line for damage, and 

replacing the associated grommet and 

motive flow line; replacing the affected 

single nut plate brackets and standoffs 

at the affected stations on the motive 

flow line and pressure relief line; and 

inspecting the motive flow line and vent 

line at certain wing stations, and 

inspecting the fuel tubes, to verify that 

an appropriate clearance has been 

maintained between the fuel tubes and 

their support brackets, and applicable 

corrective actions. We are proposing 

this AD to address the unsafe condition 

on these products. 

DATES: We must receive comments on 

this proposed AD by August 6, 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 Bombardier, Inc., QSeries Technical Help Desk, 123 Garratt 

Boulevard, Toronto, Ontario M3K 1Y5, 

Canada; telephone 416–375–4000; fax 

416–375–4539; email thd.qseries@

aero.bombardier.com; internet http://

www.bombardier.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– 

0548; 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: 

Joseph Catanzaro, Aerospace Engineer, 

Propulsion Section, FAA, New York 

ACO Branch, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; 

telephone 516–228–7300; fax 516–794– 

5531. 

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– 

2018–0548; Product Identifier 2017– 

NM–184–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 based 

on 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 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued Canadian AD 

CF–2017–05R1, dated September 20, 

2017 (referred to after this as the 

Mandatory Continuing Airworthiness 

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

an unsafe condition for certain 

Bombardier, Inc., Model DHC–8–400 

series airplanes. The MCAI states: 

Some operators have reported broken Pclamps on the pressure relief line and the 

motive flow line in the left and right fuel 

tanks. Fouling conditions were also reported 

to exist between the motive flow line and the 

collector tank partition wall in both fuel 

tanks. These issues affect the integrity of the 

electrical bonding paths throughout the fuel 

lines, which in turn may lead to lightning 

strike induced fuel tank ignition. 

The initial issue of this [Canadian] AD 

mandated design changes that mitigate the 

risk of lightning strike induced fuel tank 

ignition. 

Since the initial issue of this [Canadian] 

AD, Transport Canada has become aware that 

Bombardier (BA) Service Bulletin (SB) 84– 

28–19 Revision A, dated 4 November 2016, 

and the initial issue of BA SB 84–28–19, 

dated 16 August 2016, do not instruct 

operators to support the motive flow line and 

vent line at wing stations ¥371.019 and 

371.019 in the left-hand and right-hand fuel 

tanks, respectively, and do not instruct 

operators to maintain appropriate clearance 

between the fuel tubes and their support 

brackets at wing stations ¥371.019 and 

¥209.019 in the left-hand fuel tank and wing 

stations 371.019 and 209.019 in the righthand fuel tank. Revision 1 of this [Canadian] 

AD introduces Part III, which requires 

operators to inspect and correct the fuel tube 

installation on affected aeroplanes, as 

required, to maintain fuel tube support and 

clearance between the fuel tubes and their 

support brackets. Revision 1 of this 

[Canadian] AD also updates SB references. 

Required actions include, depending 

on airplane configuration, increasing the 

hole size in the collector tank partition 

wall, inspecting the motive flow line for 

damage, and replacing the associated 

grommet and motive flow line; 

replacing the affected single nut plate 

brackets and standoffs at the affected 

stations on the motive flow line and 

pressure relief line; and inspecting the 

motive flow line and vent line at certain 

wing stations, and inspecting the fuel 

tubes, to verify that an appropriate 

clearance has been maintained between 

the fuel tubes and their support 

brackets, and applicable corrective 

actions. Corrective actions include 

reworking the replaced parts. 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– 

0548. 


daltland on DSKBBV9HB2PROD with PROPOSALS
29060 Federal Register / Vol. 83, No. 121 / Friday, June 22, 2018 / Proposed Rules 

Related Service Information Under 1 

CFR Part 51 

Bombardier has issued Service 

Bulletin 84–28–18, Revision B, dated 

April 20, 2017. This service information 

describes procedures to increase the 

hole size in the collector tank partition 

wall, inspect the motive flow line for 

damage, and replace the associated 

grommet and motive flow line. 

Bombardier has also issued Service 

Bulletin 84–28–19, Revision C, dated 

September 1, 2017. This service 

information describes procedures to 

replace the affected single nut plate 

brackets and standoffs at the affected 

stations on the motive flow line and 

pressure relief line, inspect the motive 

flow line and vent line at certain wing 

stations, and inspect the fuel tubes to 

verify that an appropriate clearance has 

been maintained between the fuel tubes 

and their support brackets, and 

applicable corrective actions. 

The 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 and Requirements 

of This Proposed AD 

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 pertinent 

information and determined an unsafe 

condition exists and is likely to exist or 

develop on other products of the same 

type design. 

Costs of Compliance 

We estimate that this proposed AD 

affects 52 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 

Inspections and modifications ............... Up to 21 work-hours × $85 per hour = 

$1,785.

Up to $6,152 ......... $7,937 Up to $412,724. 

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): 

Bombardier, Inc.: Docket No. FAA–2018– 

0548; Product Identifier 2017–NM–184– 

AD. 

(a) Comments Due Date 

We must receive comments by August 6, 

2018. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Bombardier, Inc., 

Model DHC–8–400, –401, and –402 

airplanes, certificated in any category, having 

serial numbers 4001, and 4003 through 4533 

inclusive. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 28, Fuel. 

(e) Reason 

This AD was prompted by a report of 

broken P-clamps on the pressure relief line 

and the motive flow line in the left and right 

fuel tanks, and fouling conditions between 

the motive flow line and the collector tank 

partition wall in both fuel tanks. We are 

issuing this AD to address fouling or chafing 

conditions that affect the integrity of the 

electrical bonding paths throughout the fuel 

lines, which could lead to lightning strike 

induced fuel tank ignition. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 


daltland on DSKBBV9HB2PROD with PROPOSALS
Federal Register / Vol. 83, No. 121 / Friday, June 22, 2018 / Proposed Rules 29061 

(g) Modification of Hole Size on Collector 

Tank Partition Wall for Certain Airplanes 

For airplanes having serial numbers (S/Ns) 

4001, and 4003 through 4525 inclusive: 

Within 6,000 flight hours or 36 months, 

whichever occurs first, from the effective 

date of this AD, increase the hole size in the 

collector tank partition wall, do a detailed 

inspection of the motive flow line for 

damage, including chafing, and replace the 

associated grommet and motive flow line, as 

applicable, before further flight in accordance 

with the Accomplishment Instructions of 

Bombardier Service Bulletin 84–28–18, 

Revision B, dated April 20, 2017. 

(h) Introduction of Revised P-Clamp 

Installation at Affected Left and Right Wing 

Stations on the Motive Flow Line and 

Pressure Relief Line for Certain Airplanes 

For airplanes, having S/Ns 4001, and 4003 

through 4533 inclusive, on which 

Bombardier Service Bulletin 84–28–19, dated 

August 16, 2016; or Bombardier Service 

Bulletin 84–28–19, Revision A, dated 

November 4, 2016; has not been 

incorporated: Within 6,000 flight hours or 36 

months, whichever occurs first, from the 

effective date of this AD, replace the affected 

single nut plate brackets and standoffs at the 

affected left and right wing stations on the 

motive flow line and pressure relief line, in 

accordance with the Accomplishment 

Instructions of Bombardier Service Bulletin 

84–28–19, Revision C, dated September 1, 

2017. Where Bombardier Service Bulletin 

84–28–19, Revision C, dated September 1, 

2017, specifies to contact Bombardier for 

appropriate action: Before further flight, 

accomplish corrective actions in accordance 

with the procedures specified in paragraph 

(k)(2) of this AD. 

(i) Inspection of Motive Flow Line and Vent 

Line at Wing Stations Ø371.019 and 371.019 

in the Fuel Tanks, and Inspection of Fuel 

Tubes 

For airplanes, having S/Ns 4001, and 4003 

through 4533 inclusive, on which 

Bombardier Service Bulletin 84–28–19, dated 

August 16, 2016; or Bombardier Service 

Bulletin 84–28–19, Revision A, dated 

November 4, 2016; have been incorporated: 

Within 6,000 flight hours or 36 months, 

whichever occurs first, from the effective 

date of this AD, inspect the motive flow line 

and vent line at wing stations ¥371.019 and 

371.019 in the left-hand and right-hand fuel 

tanks, respectively, to ensure that these fuel 

tubes are adequately supported, inspect the 

fuel tubes to verify that an appropriate 

clearance has been maintained between the 

fuel tubes and their support brackets, and 

before further flight do all applicable 

corrective actions, in accordance with 

Section 3.A., Section 3.B.(13), and Section 

3.C. of Bombardier Service Bulletin 84–28– 

19, Revision C, dated September 1, 2017. 

Where Bombardier Service Bulletin 84–28– 

19, Revision C, dated September 1, 2017, 

specifies to contact Bombardier for 

appropriate action: Before further flight, 

accomplish corrective actions in accordance 

with the procedures specified in paragraph 

(k)(2) of this AD. 

(j) Credit for Previous Actions 

(1) This paragraph provides credit for 

actions required by paragraph (g) of this AD, 

if those actions were performed before the 

effective date of this AD using Bombardier 

Service Bulletin 84–28–18, dated April 20, 

2016; or Bombardier Service Bulletin 84–28– 

18, Revision A, dated November 14, 2016. 

(2) This paragraph provides credit for 

actions required by paragraph (h) of this AD, 

if those actions were performed before the 

effective date of this AD using Bombardier 

Service Bulletin 84–28–19 Revision B, dated 

July 28, 2017. 

(3) This paragraph provides credit for 

actions required by paragraph (i) of this AD, 

if those actions were performed before the 

effective date of this AD using Section 3.A., 

Section 3.B.(13), and Section 3.C. of 

Bombardier Service Bulletin 84–28–19, 

Revision B, dated July 28, 2017. 

(k) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York 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 ATTN: Program Manager, 

Continuing Operational Safety, FAA, New 

York ACO Branch, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; telephone 

516–228–7300; fax 516–794–5531. 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, New York ACO Branch, 

FAA; or Transport Canada Civil Aviation 

(TCCA); or Bombardier, Inc.’s TCCA Design 

Approval Organization (DAO). If approved by 

the DAO, the approval must include the 

DAO-authorized signature. 

(l) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) Canadian 

AD CF–2017–05R1, dated September 20, 

2017, 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– 

2018–0548. 

(2) For more information about this AD, 

contact Joseph Catanzaro, Aerospace 

Engineer, Propulsion Section, FAA, New 

York ACO Branch, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; telephone 

516–228–7300; fax 516–794–5531. 

(3) For service information identified in 

this AD, contact Bombardier, Inc., Q-Series 

Technical Help Desk, 123 Garratt Boulevard, 

Toronto, Ontario M3K 1Y5, Canada; 

telephone 416–375–4000; fax 416–375–4539; 

email thd.qseries@aero.bombardier.com; 

internet http://www.bombardier.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 June 

12, 2018. 

Michael Kaszycki, 

Acting Director, System Oversight Division, 

Aircraft Certification Service. 

[FR Doc. 2018–13335 Filed 6–21–18; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2018–0550; Product 

Identifier 2018–NM–024–AD] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc., 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 

Bombardier, Inc., Model CL–600–2B16 

(CL–604 Variants) airplanes. This 

proposed AD was prompted by reports 

of floodlight lamps found burned and 

the corresponding circuit breaker 

tripped as a result of fluid entering the 

cockpit floodlight fixtures. This 

proposed AD would require installation 

of a new gasket seal on floodlight 

fixtures. We are proposing this AD to 

address the unsafe condition on these 

products. 

DATES: We must receive comments on 

this proposed AD by August 6, 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 Bombardier, Inc., 


daltland on DSKBBV9HB2PROD with PROPOSALS