Federal Register / Vol. 81, No. 70 / Tuesday, April 12, 2016 / Proposed Rules 21495 

under the criteria of the Regulatory 

Flexibility Act. 

We prepared an economic evaluation 

of the estimated costs to comply with 

this proposed AD and placed it in the 

AD docket. 

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 Helicopters: Docket No. FAA–2015– 

5807; Directorate Identifier 2015–SW– 

063–AD. 

(a) Applicability 

This AD applies to Airbus Helicopters 

Model AS355NP helicopters, certificated in 

any category, with an Arrius 1A1 fire 

extinguishing system installed. 

(b) Unsafe Condition 

This AD defines the unsafe condition as an 

incorrectly connected fire extinguishing 

discharge system. This condition could result 

in the fire extinguishing system discharging 

to the wrong engine compartment, failure of 

the fire extinguishing system to contain a 

fire, and loss of control of the helicopter. 

(c) Comments Due Date 

We must receive comments by June 13, 

2016. 

(d) Compliance 

You are responsible for performing each 

action required by this AD within the 

specified compliance time unless it has 

already been accomplished prior to that time. 

(e) Required Actions 

Within 600 hours time-in-service or at the 

next annual inspection, whichever occurs 

first, remove and install the fire 

extinguishing system, and remove any 

placards on the instrument panel if installed, 

in accordance with the Accomplishment 

Instructions, paragraph 3.B. and 3.B.1 

through 3.B.2, of Airbus Helicopters Alert 

Service Bulletin No. AS355–26.00.10, 

Revision 0, dated July 2, 2015. 

(f) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Safety Management 

Group, FAA, may approve AMOCs for this 

AD. Send your proposal to: George Schwab, 

Aviation Safety Engineer, Safety Management 

Group, Rotorcraft Directorate, FAA, 10101 

Hillwood Pkwy, Fort Worth, TX 76177; 

telephone (817) 222–5110; email 9-ASWFTW-AMOC-Requests@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. 

(g) Additional Information 

(1) Eurocopter Emergency Alert Service 

Bulletin No. 26.00.09, Revision 0, dated 

September 15, 2011, which is not 

incorporated by reference, contains 

additional information about the subject of 

this AD. For service information identified in 

this AD, contact Airbus Helicopters, 2701 N. 

Forum Drive, Grand Prairie, TX 75052; 

telephone (972) 641–0000 or (800) 232–0323; 

fax (972) 641–3775; or at http://

www.airbushelicopters.com/techpub. You 

may review the referenced service 

information at the FAA, Office of the 

Regional Counsel, Southwest Region, 10101 

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

TX 76177. 

(2) The subject of this AD is addressed in 

European Aviation Safety Agency (EASA) AD 

No. 2015–0181, dated August 31, 2015. You 

may view the EASA AD on the Internet at 

http://www.regulations.gov in the AD Docket. 

(h) Subject 

Joint Aircraft Service Component (JASC) 

Code: 2620, Extinguishing System. 

Issued in Fort Worth, Texas, on April 4, 

2016. 

Scott A. Horn, 

Acting Manager, Rotorcraft Directorate, 

Aircraft Certification Service. 

[FR Doc. 2016–08247 Filed 4–11–16; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2016–5044; Directorate 

Identifier 2014–NM–166–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–8–102, 

–103, and –106 airplanes, and Model 

DHC–8–200 and –300 series airplanes. 

This proposed AD was prompted by a 

report of heat damage found on a 

nacelle firewall after an unsuccessful 

engine ground start and several events 

of heat damage found on direct current 

starter/generator terminal block 

assemblies. This proposed AD would 

require an inspection for damage on the 

nacelle firewalls and the terminal block 

assemblies and to make sure the 

insulating sleeves are installed and have 

no damage, and corrective action if 

necessary. We are proposing this AD to 

prevent arcing between the firewall and 

terminal blocks that are missing 

insulating sleeves on the conductive 

bushings, which could, in combination 

with a fuel or hydraulic fluid leak, be 

an ignition source for a fire. 

DATES: We must receive comments on 

this proposed AD by May 27, 2016. 

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 referenced service information at 

the FAA, Transport Airplane 

Directorate, 1601 Lind Avenue SW., 

Renton, WA. For information on the 

availability of this material at the FAA, 

call 425–227–1221. 

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–2016– 

5044; 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 proposed AD, 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 


jstallworth on DSK7TPTVN1PROD with PROPOSALS
21496 Federal Register / Vol. 81, No. 70 / Tuesday, April 12, 2016 / Proposed Rules 

be available in the AD docket shortly 

after receipt. 

FOR FURTHER INFORMATION CONTACT: 

Assata Dessaline, Aerospace Engineer, 

Avionics and Flight Test Branch, ANE– 

172, FAA, New York Aircraft 

Certification Office, 1600 Stewart 

Avenue, Suite 410, Westbury, NY 

11590; telephone 516–228–7301; fax 

516–794–5531. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposed AD. Send your comments 

to an address listed under the 

ADDRESSES section. Include ‘‘Docket No. 

FAA–2016–5044; Directorate Identifier 

2014–NM–166–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this proposed AD. We will 

consider all comments received by the 

closing date and may amend this 

proposed AD 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 proposed AD. 

Discussion 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued Canadian 

Airworthiness Directive CF–2014–03R1, 

dated July 24, 2014 (referred to after this 

as the Mandatory Continuing 

Airworthiness Information, or ‘‘the 

MCAI’’), to correct an unsafe condition 

for certain Bombardier, Inc. Model 

DHC–8–102, –103, and –106 airplanes, 

and Model DHC–8–200 and –300 series 

airplanes. The MCAI states: 

There has been one in-service report of 

heat damage on a nacelle firewall found after 

an unsuccessful engine ground start. There 

have also been several reports of heat damage 

found on Direct Current Starter/Generator 

terminal block assemblies, part number (P/N) 

82450075–001. 

The investigation determined that in all 

cases, the heat damage was caused by arcing 

between the firewall and terminal blocks 

with missing insulating sleeves on the 

conductive bushings. The insulating sleeves 

may have been inadvertently omitted during 

the incorporation of Modsum 8/1926, or 

during the installation of terminal blocks P/ 

N 82450075–001. 

Arcing with the firewall becomes an 

ignition source, creating a potential fire 

hazard when combined with a fuel or 

hydraulic fluid leak. 

The original issue of this [Canadian] AD 

mandated the [detailed visual] inspection [for 

damage to the nacelle firewalls and to make 

sure the insulating sleeves are installed and 

have no damage] and rectification [corrective 

actions such as installing or replacing 

insulating sleeves, or replacing a terminal 

block], as required, of the nacelle firewall 

and terminal block assembly P/N 82450075– 

001 installed with Modsum 8/1926. 

Revision 1 of this [Canadian] AD is issued 

to revise the Applicability to ensure that the 

terminal blocks have the insulating sleeves 

installed. 

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–2016– 

5044. 

Relevant Service Information Under 1 

CFR Part 51 

Bombardier has issued Service 

Bulletin 8–24–92, Revision A, dated 

April 11, 2014. This service information 

describes procedures for an inspection 

for damage on the nacelle firewalls and 

the terminal block assemblies and to 

make sure the insulating sleeves are 

installed and have no damage, and 

corrective action if necessary. 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 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 75 airplanes of U.S. registry. 

We also estimate that it would take 

about 2 work-hours per product to 

comply with the basic requirements of 

this proposed AD. The average labor 

rate is $85 per work-hour. Based on 

these figures, we estimate the cost of 

this proposed AD on U.S. operators to 

be $12,750, or $170 per product. 

In addition, we estimate that any 

necessary follow-on actions would take 

about 1 work-hour and require parts 

costing $551, for a cost of $636 per 

product. We have no way of 

determining the number of aircraft that 

might need these actions. 

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. 

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. 


jstallworth on DSK7TPTVN1PROD with PROPOSALS
Federal Register / Vol. 81, No. 70 / Tuesday, April 12, 2016 / Proposed Rules 21497 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive (AD): 

Bombardier, Inc.: Docket No. FAA–2016– 

5044; Directorate Identifier 2014–NM– 

166–AD. 

(a) Comments Due Date 

We must receive comments by May 27, 

2016. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Bombardier, Inc. 

airplanes identified in paragraphs (c)(1), 

(c)(2), and (c)(3) of this AD, certificated in 

any category, serial numbers 003 through 672 

inclusive, on which terminal block part 

number 82450075–001 is installed. 

(1) Model DHC–8–102, –103, and –106 

airplanes. 

(2) Model DHC–8–201 and –202 airplanes. 

(3) Model DHC–8–301, –311, and –315 

airplanes. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 24, Electrical Power. 

(e) Reason 

This AD was prompted by a report of one 

event of heat damage found on a nacelle 

firewall after an unsuccessful engine ground 

start and several events of heat damage found 

on direct current starter/generator terminal 

block assemblies. We are issuing this AD to 

prevent arcing between the firewall and 

terminal blocks that are missing insulating 

sleeves on the conductive bushings, which 

could, in combination with a fuel or 

hydraulic fluid leak, be an ignition source for 

a fire. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Inspection and Corrective Action 

Within 2,500 flight cycles or 14 months 

after the effective date of this AD, whichever 

occurs first, perform a detailed visual 

inspection of the right-hand side and lefthand side nacelle firewalls and terminal 

block assemblies, as defined in Bombardier 

Service Bulletin 8–24–92, Revision A, dated 

April 11, 2014, in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 8–24–92, Revision A, dated 

April 11, 2014. 

(1) If the inspection finds no damage on the 

engine firewalls and the terminal blocks, and 

that the insulating sleeves are installed on 

both terminal blocks, no further action is 

required by this AD. 

(2) If the inspection finds that no insulating 

sleeves are installed, or the existing sleeves 

are damaged, and there is no damage to the 

nacelle firewall and terminal block, before 

further flight, install the replacement 

insulating sleeves, in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 8–24–92, Revision A, dated 

April 11, 2014. 

(3) If the inspection finds that no insulating 

sleeves are installed, or any existing sleeve is 

damaged, and there is no damage to the 

nacelle firewall, but there is damage to the 

terminal block, before further flight, replace 

the terminal block assembly (which includes 

insulating sleeves), in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 8–24–92, Revision A, dated 

April 11, 2014. 

(4) If the inspection finds that no insulating 

sleeves are installed and there is damage to 

the nacelle firewall and the terminal block, 

repair the damage using a method approved 

by the Manager, New York Aircraft 

Certification Office (ACO), ANE–170, Engine 

and Propeller Directorate, FAA; or Transport 

Canada Civil Aviation (TCCA); or 

Bombardier, Inc.’s TCCA Design Approval 

Organization (DAO). 

(h) Credit for Previous Actions 

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 8–24–92, dated September 25, 2013, 

which is not incorporated by reference in this 

AD. 

(i) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York ACO, 

ANE–170, 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 ACO, send it to ATTN: Program 

Manager, Continuing Operational Safety, 

FAA, New York ACO, 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. The AMOC approval 

letter must specifically reference this AD. 

(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, ANE–170, 

Engine and Propeller Directorate, FAA; or 

TCCA; or Bombardier, Inc.’s TCCA DAO. If 

approved by the DAO, the approval must 

include the DAO-authorized signature. 

(j) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) Canadian 

Airworthiness Directive CF–2014–03R1, 

dated July 24, 2014, 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–2016–5044. 

(2) 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 Airplane Directorate, 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 March 

26, 2016. 

Jeffrey E. Duven, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2016–08266 Filed 4–11–16; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2016–5468; Directorate 

Identifier 2015–NM–021–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 all The 

Boeing Company Model 737–600, –700, 

–700C, –800, and –900 series airplanes. 

This proposed AD was prompted by 

reports of paint deterioration on the 

surface of the main landing gear (MLG) 

and the early onset of corrosion in the 

trunnion bore of the MLG outer 

cylinder. This proposed AD would 

require identifying affected parts, 

repetitive external surface detailed 

inspection for damage of affected parts, 

and related investigative and corrective 

actions if necessary. For certain 

airplanes, this AD also would require a 

detailed inspection and bushing 

replacement of the trunnion bore, and 

related investigative and corrective 

action if necessary. We are proposing 

this AD to prevent stress corrosion 

cracking of the external surfaces of the 

MLG, which could result in a fracture of 

the MLG and consequent MLG collapse. 

DATES: We must receive comments on 

this proposed AD by May 27, 2016. 

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– 


jstallworth on DSK7TPTVN1PROD with PROPOSALS