31488 Federal Register / Vol. 83, No. 130 / Friday, July 6, 2018 / Proposed Rules 

Issued in Washington, DC, on June 21, 

2018. 

David W. Hempe, 

Deputy Executive Director for Regulatory 

Operations, Aircraft Certification Service. 

[FR Doc. 2018–14270 Filed 7–5–18; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2018–0547; Product 

Identifier 2017–NM–091–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 reports of wear on fuel 

couplings, bonding springs, and sleeves 

as well as fuel tube end ferrules and fuel 

component end ferrules. This proposed 

AD would require repetitive inspections 

of the existing clamshell coupling 

bonding wires, fuel couplings, and 

associated sleeves for certain criteria 

and replacement as necessary. This 

proposed AD would also require 

repetitive inspections of the fuel tube 

end ferrules, fuel component end 

ferrules, and ferrule o-ring flanges for 

damage and wear, and rework as 

necessary. We are proposing this AD to 

address the unsafe condition on these 

products. 

DATES: We must receive comments on 

this proposed AD by August 20, 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– 

0547; 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: 

Anthony Flores, Aerospace Engineer, 

Propulsion and Program Management 

Section, FAA, Chicago ACO Branch, 

Room 107, 2300 East Devon Avenue, 

Des Plaines, IL 60018; telephone 847– 

294–7140; fax 847–294–7834; email: 

anthony.flores@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– 

2018–0547; Product Identifier 2017– 

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 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–2017–04R1, dated May 26, 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 

discoloration and corrosion of Hydraflow 

part number 14J26 fuel couplings. Removal 

of the couplings during scheduled 

maintenance inspection has also shown signs 

of wear on the fuel tube end ferrules, fuel 

component end ferrules, coupling bonding 

springs, and coupling sleeves. These issues 

affect the integrity of the electrical bonding 

paths throughout the fuel lines and 

components, which in turn may lead to 

lightning strike induced fuel tank ignition. 

The initial issue of this [Canadian] AD 

mandated the [detailed] inspection [for wear 

or damage] and repair or replacement, as 

required, of affected fuel couplings and 

sleeves, fuel tubes, and fuel components, as 

well as the collection of wear data, to 

mitigate the risk of lightning strike induced 

fuel tank ignition. 

Since the initial issue of this [Canadian] 

AD, Transport Canada has become aware that 

the compliance timeframe of Part I of the 

initial issue of this [Canadian] AD is not 

suitable for new aeroplanes entering into 

service from the production line. Revision 1 

of this [Canadian] AD updates Part I of the 

initial issue of this [Canadian] AD 

accordingly, and mandates the [repetitive] 

inspection and repair or replacement, as 

required, of affected fuel couplings and 

sleeves, fuel tubes, and fuel components, as 

well as the collection of wear data, to 

mitigate the risk of lightning strike induced 

fuel tank ignition. 

Required actions include replacement 

of clamshell coupling bonding wires, 

fuel couplings and associated sleeves 

and rework (repair, replace, or blend, as 

applicable) of fuel tube end ferrules, 

fuel component end ferrules, and ferrule 

o-ring flanges. 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–2018–0547. 

Related Service Information Under 1 

CFR Part 51 

Bombardier has issued Service 

Bulletin 84–28–20, Revision C, dated 

April 28, 2017. This service information 

describes procedures for inspections of 

the existing clamshell coupling bonding 

wires, fuel couplings, and associated 

sleeves for certain criteria (wear and 

damage, including discoloration, worn 

coating, scuffing and grooves) and 

replacement. This service information 

also describes procedures for 

inspections of the fuel tube end ferrules, 

fuel component end ferrules, and ferrule 

o-ring flanges for damage and wear, and 

rework. 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. 


daltland on DSKBBV9HB2PROD with PROPOSALS
Federal Register / Vol. 83, No. 130 / Friday, July 6, 2018 / Proposed Rules 31489 

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 FOR REQUIRED ACTIONS

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

Inspections ................. 212 work-hours × $85 per hour = $18,020 per inspection cycle.$0 $18,020 per inspection 

cycle.

$937,040 per inspection 

cycle. 

Reporting ................... 1 work hour × $85 per hour = $85 per inspection 

cycle.

0 85 per inspection cycle 4,420 per inspection 

cycle. 

We estimate the following costs to do 

any necessary replacements or rework 

that would be required based on the 

results of the proposed inspection. We 

have no way of determining the number 

of aircraft that might need these 

replacements or rework: 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Rework/Replacement ....................... 174 work-hours × $85 per hour = $14,790 ............................................... $2,000 $16,790 

Paperwork Reduction Act 

A federal agency may not conduct or 

sponsor, and a person is not required to 

respond to, nor shall a person be subject 

to penalty for failure to comply with a 

collection of information subject to the 

requirements of the Paperwork 

Reduction Act unless that collection of 

information displays a current valid 

OMB control number. The control 

number for the collection of information 

required by this NPRM is 2120–0056. 

The paperwork cost associated with this 

NPRM has been detailed in the Costs of 

Compliance section of this document 

and includes time for reviewing 

instructions, as well as completing and 

reviewing the collection of information. 

Therefore, all reporting associated with 

this NPRM is mandatory. Comments 

concerning the accuracy of this burden 

and suggestions for reducing the burden 

should be directed to the FAA at 800 

Independence Ave. SW, Washington, 

DC 20591, ATTN: Information 

Collection Clearance Officer, AES–200. 

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): 


daltland on DSKBBV9HB2PROD with PROPOSALS
31490 Federal Register / Vol. 83, No. 130 / Friday, July 6, 2018 / Proposed Rules 

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

0547; Product Identifier 2017–NM–091– 

AD. 

(a) Comments Due Date 

We must receive comments by August 20, 

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, manufacturer 

serial numbers 4001, 4003, and subsequent. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 28, Fuel. 

(e) Reason 

This AD was prompted by reports of wear 

on fuel couplings, bonding springs, and 

sleeves as well as fuel tube end ferrules and 

fuel component end ferrules. We are issuing 

this AD to address such wear, which could 

reduce the integrity of the electrical bonding 

paths through the fuel line and components, 

and ultimately lead to fuel tank ignition in 

the event of a lightning strike. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Initial Inspection Compliance Times 

At the applicable times specified in 

paragraph (g)(1) or (g)(2) of this AD, do the 

actions specified in paragraphs (h)(1) and 

(h)(2) of this AD. 

(1) For all airplanes except those identified 

in paragraph (g)(2) of this AD: Within 6,000 

flight hours or 36 months, whichever occurs 

first after the effective date of this AD. 

(2) For new airplanes with an original 

airworthiness certificate or original export 

certificate of airworthiness issued on or after 

the effective date of this AD: Within 6,000 

flight hours or 36 months, whichever occurs 

first after the date of issuance of the original 

airworthiness certificate or the date of 

issuance of the original export certificate of 

airworthiness. 

(h) Repetitive Inspections and Corrective 

Actions 

At the applicable times specified in 

paragraph (g)(1) or (g)(2) of this AD, do the 

actions specified in paragraphs (h)(1) and 

(h)(2) of this AD. Repeat the actions 

thereafter at intervals not to exceed 6,000 

flight hours or 36 months, whichever occurs 

first. 

(1) Do a detailed inspection of the existing 

clamshell coupling bonding wires, fuel 

couplings, and associated sleeves for criteria, 

as identified in, and in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 84–28–20, Revision C, dated 

April 28, 2017. If any conditions are found 

meeting the criteria specified in Bombardier 

Service Bulletin 84–28–20, Revision C, dated 

April 28, 2017, before further flight, replace 

affected parts with new couplings and 

sleeves of the same part number, in 

accordance with the Accomplishment 

Instructions of Bombardier Service Bulletin 

84–28–20, Revision C, dated April 28, 2017. 

(2) Do a detailed inspection of the fuel tube 

end ferrules, fuel component end ferrules, 

and ferrule o-ring flanges for damage and 

wear, and rework (repair, replace, or blend, 

as applicable), in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 84–28–20, Revision C, dated 

April 28, 2017. 

(i) Reporting 

At the applicable time specified in 

paragraph (i)(1) or (i)(2) of this AD: Submit 

a report of the findings (including no 

findings) of the initial and repetitive 

inspections required by paragraph (h) of this 

AD by completing Tables 1 through 5 of 

Bombardier Service Bulletin 84–28–20, 

Revision C, dated April 28, 2017, and 

submitting them to Bombardier, Inc. Q-Series 

Action Center; telephone: 1–844–272–2720; 

email: thd.qseries@aero.bombardier.com. 

(1) If the inspection was done on or after 

the effective date of this AD, submit the 

report within 30 days after the completion of 

the inspection. 

(2) If the inspection was done before the 

effective date of this AD, submit the report 

within 30 days after the effective date of this 

AD. 

(j) Credit for Previous Actions 

(1) This paragraph provides credit for the 

actions required by paragraphs (h)(1) and 

(h)(2) of this AD, if those actions were 

performed before the effective date of this AD 

using the service information specified in 

paragraph (j)(1)(i) or (j)(1)(ii) of this AD. 

(i) Bombardier Service Bulletin 84–28–20, 

Revision A, dated December 14, 2016. 

(ii) Bombardier Service Bulletin 84–28–20, 

Revision B, dated February 13, 2017. 

(2) This paragraph provides credit for the 

initial inspections required by paragraphs 

(h)(1) and (h)(2) of this AD and the initial 

reporting required by paragraph (i) of this 

AD, for Bombardier, Inc., Model DHC–8–402 

airplane, manufacturer serial number 4164, if 

those actions were performed before the 

effective date of this AD using Bombardier 

Service Bulletin 84–28–20, dated September 

30, 2016. 

(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. 

(3) Reporting Requirements: A federal 

agency may not conduct or sponsor, and a 

person is not required to respond to, nor 

shall a person be subject to a penalty for 

failure to comply with a collection of 

information subject to the requirements of 

the Paperwork Reduction Act unless that 

collection of information displays a current 

valid OMB Control Number. The OMB 

Control Number for this information 

collection is 2120–0056. Public reporting for 

this collection of information is estimated to 

be approximately 1 hour per response, 

including the time for reviewing instructions, 

completing and reviewing the collection of 

information. All responses to this collection 

of information are mandatory. Comments 

concerning the accuracy of this burden and 

suggestions for reducing the burden should 

be directed to the FAA at: 800 Independence 

Ave. SW, Washington, DC 20591, Attn: 

Information Collection Clearance Officer, 

AES–200. 

(l) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) Canadian 

AD CF–2017–04R1, dated May 26, 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–2018–0547. 

(2) For more information about this AD, 

contact Anthony Flores, Aerospace Engineer, 

Propulsion and Program Management 

Section, FAA, Chicago ACO Branch, Room 

107, 2300 East Devon Avenue, Des Plaines, 

IL 60018; telephone 847–294–7140; fax 847– 

294–7834; email: anthony.flores@faa.gov. 

(3) For information about AMOCs, contact 

Joe Catanzaro, Aerospace Engineer, 

Propulsion Section, FAA, New York ACO 

Branch, 1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; telephone: 516–228– 

7366; fax: 516–794–5531; email: 

joseph.catanzaro@faa.gov. 

(4) 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. 


daltland on DSKBBV9HB2PROD with PROPOSALS
Federal Register / Vol. 83, No. 130 / Friday, July 6, 2018 / Proposed Rules 31491 

Issued in Des Moines, Washington, on June 

12, 2018. 

Michael Kaszycki, 

Acting Director, System Oversight Division, 

Aircraft Certification Service. 

[FR Doc. 2018–13477 Filed 7–5–18; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2018–0585; Product 

Identifier 2018–NM–070–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 BD–700–1A10 

and BD–700–1A11 airplanes. This 

proposed AD was prompted by reports 

that non-conforming FIREX squib wire 

harness connectors may have been 

installed, which could result in FIREX 

squib wire harness connectors being 

connected to the wrong FIREX bottle 

connectors on affected aircraft. This 

proposed AD would require a visual 

inspection of the connections between 

the FIREX squib wire harness 

connectors and FIREX bottle connectors, 

installation of split ring lanyards on the 

FIREX squib wire harness connectors, 

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 August 20, 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., 

400 Coˆte-Vertu Road West, Dorval, 

Que ́bec H4S 1Y9, Canada; telephone 

514–855–5000; fax 514–855–7401; email 

thd.crj@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– 

0585; 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: John 

DeLuca, Aerospace Engineer, Avionics 

and Administrative Services Section, 

FAA, New York ACO Branch, 1600 

Stewart Avenue, Suite 410, Westbury, 

NY 11590; telephone 516–228–7369; fax 

516–794–5531; email 9-avs-nyaco-cos@

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– 

2018–0585; Product Identifier 2018– 

NM–070–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 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued Canadian 

Airworthiness Directive CF–2018–08R1, 

dated March 2, 2018 (referred to after 

this as the Mandatory Continuing 

Airworthiness Information, or ‘‘the 

MCAI’’), to correct an unsafe condition 

for certain Bombardier, Inc., Model BD– 

700–1A10 and BD–700–1A11 airplanes. 

The MCAI states: 

Bombardier, Inc., has been made aware 

that non-conforming squib connector wire 

harnesses may have been installed on one of 

the two engine FIREX bottle installations on 

some of the affected aeroplanes. The subject 

non conformity of squib connector wire 

length can allow cross connection between 

the two squib connectors on one of the 

engine FIREX bottles, preventing proper 

function of the engine FIREX system. 

In the event of an engine fire, this wiring 

discrepancy may potentially misroute the 

supply of fire extinguishing agent to the 

wrong engine, or limit the supply from both 

FIREX bottles to only one engine, [and could 

result in the inability to extinguish an engine 

fire,] hence impacting the operational safety 

of the aeroplane. 

Bombardier, Inc., issued service bulletins 

(SB) 700–26–011, 700–26–5003, 700–26– 

6003, and 700–1A11–26–004, for the affected 

model aeroplanes, to address the potentially 

unsafe condition caused by the nonconforming FIREX bottle squib connector 

wiring. 

The original version of this [Canadian] AD 

was issued to mandate compliance with the 

above-mentioned SBs, as applicable. 

Revision 1 of this [Canadian] AD is issued 

to correct an error in the applicability section 

of the original AD. 

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– 

0585. 

Related Service Information Under 1 

CFR Part 51 

We reviewed the following service 

information: 

• Bombardier Service Bulletin 700– 

1A11–26–004, Revision 01, dated 

February 15, 2018. 

• Bombardier Service Bulletin 700– 

26–011, Revision 01, dated February 15, 

2018. 

• Bombardier Service Bulletin 700– 

26–5003, Revision 01, dated February 

15, 2018. 

• Bombardier Service Bulletin 700– 

26–6003, Revision 01, dated February 

15, 2018. 

This service information describes 

procedures for a visual inspection of the 

connections between the FIREX squib 

wire harness connectors and the FIREX 

bottle connectors to determine whether 

the connectors are installed correctly, 

and installation of split ring lanyards on 

the FIREX squib wire harness 

connectors. This service information 

also describes procedures for reconnecting incorrectly installed 

connectors to the appropriate mating 

connectors and an operational test of the 

fire extinguishing system. These 

documents are distinct since they apply 


daltland on DSKBBV9HB2PROD with PROPOSALS