Federal Register / Vol. 78, No. 68 / Tuesday, April 9, 2013 / Proposed Rules 21077 

(n) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York Aircraft 

Certification Office (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. Send information to 

ATTN: Program Manager, Continuing 

Operational Safety, FAA, New York ACO, 

1600 Stewart Avenue, Suite 410, Westbury, 

New York 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. AMOCs 

approved previously in accordance with AD 

2008–08–09, Amendment 39–15461 (73 FR 

19979, April 14, 2008), are approved as 

AMOCs for the corresponding provisions of 

paragraphs (g), (h), and (i) of this AD. 

(2) Airworthy Product: For any requirement 

in this AD to obtain corrective actions from 

a manufacturer or other source, use these 

actions if they are FAA-approved. Corrective 

actions are considered FAA-approved if they 

are approved by the State of Design Authority 

(or their delegated agent). You are required 

to assure the product is airworthy before it 

is returned to service. 

(o) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) Canadian 

Airworthiness Directive CF–2005–41R1, 

dated May 10, 2012, and the service bulletins 

specified in paragraphs (o)(1)(i) through 

(o)(1)(v) of this AD, for related information. 

(i) Bombardier Alert Service Bulletin 

A601R–27–144, Revision A, dated February 

14, 2006, including Appendix A, dated 

September 15, 2005. 

(ii) Bombardier Alert Service Bulletin 

A601R–27–144, Revision B, dated December 

20, 2006, including Appendix A, Revision A, 

dated December 20, 2006. 

(iii) Bombardier Alert Service Bulletin 

A601R–27–144, Revision E, dated October 2, 

2012, including Appendix A, Revision A, 

dated December 20, 2006. 

(iv) Bombardier Service Bulletin 601R–27– 

139, Revision A, dated May 28, 2012. 

(v) Bombardier Temporary Revision (TR) 

2B–1784, dated October 24, 2003, to the CL– 

600–2B19 Canadair Regional Jet Maintenance 

Requirements Manual, Part 2, Appendix B, 

‘‘Airworthiness Limitations.’’ 

(2) For service information identified in 

this AD, contact Bombardier, Inc., 400 CoˆteVertu 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 review 

copies of the 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. 

Issued in Renton, Washington, on March 

28, 2013. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2013–08204 Filed 4–8–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–1003; Directorate 

Identifier 2012–NM–064–AD] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Supplemental notice of 

proposed rulemaking (NPRM); 

reopening of comment period. 

SUMMARY: We are revising an earlier 

proposed airworthiness directive (AD) 

for certain Bombardier, Inc. Model 

DHC–8–400 series airplanes. That 

NPRM proposed replacing all three 

advance pneumatic detectors (APDs) 

with new detector assemblies. That 

NPRM was prompted by reports of 

ADPs for engine fire/overheat detector 

assemblies failing to reset after 

activation due to permanent 

deformation of the detector switch 

diaphragm after being exposed to high 

temperatures. This action revises that 

NPRM by adding airplanes to the 

applicability. We are proposing this AD 

to prevent a continued engine fire 

indication in the cockpit after the actual 

fire has been extinguished, which is 

misleading and might influence the 

pilot to conduct a potentially hazardous 

‘‘off-airport’’ landing. Since these 

actions impose an additional burden 

over that proposed in the NPRM, we are 

reopening the comment period to allow 

the public the chance to comment on 

these proposed changes. 

DATES: We must receive comments on 

this proposed AD by May 24, 2013. 

ADDRESSES: You may send comments 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: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC, between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this proposed 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 review copies of the 

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; or in person at the 

Docket Operations office 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 

be available in the AD docket shortly 

after receipt. 

FOR FURTHER INFORMATION CONTACT: 

Mazdak Hobbi, Aerospace Engineer, 

Propulsion and Services Branch, ANE– 

173, FAA, New York Aircraft 

Certification Office, 1600 Stewart 

Avenue, Suite 410, Westbury, NY 

11590; telephone 516–228–7330; 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–2012–1003; Directorate Identifier 

2012–NM–064–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. 


tkelley on DSK3SPTVN1PROD with PROPOSALS
21078 Federal Register / Vol. 78, No. 68 / Tuesday, April 9, 2013 / Proposed Rules 

Discussion 

We proposed to amend 14 CFR part 

39 with an earlier NPRM for the 

specified products, which was 

published in the Federal Register on 

October 2, 2012 (77 FR 60060). That 

earlier NPRM proposed to require 

actions intended to address the unsafe 

condition for the products listed above. 

Since that NPRM (77 FR 60060, 

October 2, 2012) was issued, we 

determined that airplanes having serial 

numbers 4374 through 4399 are also 

affected by the identified unsafe 

condition, and that the actions specified 

in paragraph (g)(3) of that NPRM need 

to be accomplished on those airplanes 

in order to address the identified unsafe 

condition. 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued Canadian 

Airworthiness Directive CF–2012–07R1, 

effective December 21, 2012 (referred to 

after this as the Mandatory Continuing 

Airworthiness Information, or ‘‘the 

MCAI’’), to correct an unsafe condition 

for the specified products. The MCAI 

states: 

There have been engine fires on DHC–8 

Series 400 aeroplanes, where the ‘‘ENGINE 

FIRE, CHECK FIRE DETECT’’ warning and 

‘‘FUEL OFF’’ handle lights failed to reset and 

remained illuminated after the fire was 

extinguished. An investigation has revealed 

that the existing engine fire/overheat detector 

assemblies ‘‘Advance Pneumatic Detectors 

(APD)’’ may fail to reset after activation due 

to permanent deformation of the detector 

switch diaphragm after being exposed to high 

temperatures. 

This abnormal condition of a continued 

engine fire indication in the cockpit, after the 

actual fire has been extinguished, is 

misleading and may influence the pilot’s 

decision to conduct a potentially hazardous 

‘‘off-airport’’ landing, which is considered an 

unsafe condition that warrants mitigating 

action. 

To mitigate this potentially hazardous 

condition, Bombardier has issued multiple 

service bulletins (SBs) [Bombardier Service 

Bulletins 84–26–08, Revision A, dated May 

12, 2011; 84–26–09, Revision A, dated May 

12, 2011; and 84–26–12, Revision B, dated 

October 12, 2012] to replace all three affected 

APDs with new detector assemblies that are 

not susceptible to the subject diaphragm 

deformation when exposed to excessive heat. 

* * * 

This revised [Canadian] AD is issued to 

include the additional 26 aeroplane S/Ns in 

the applicability section of the AD. The 

additional S/Ns, 4374 through 4399, only 

affect the compliance with Part III of this 

[Canadian] AD. 

You may obtain further information by 

examining the MCAI in the AD docket. 

Relevant Service Information 

Bombardier, Inc. has issued Service 

Bulletins 84–26–08, Revision B, dated 

September 24, 2012; and 84–26–12, 

Revision B, dated October 12, 2012. The 

actions described in this service 

information are intended to correct the 

unsafe condition identified in the 

MCAI. 

Comments 

We gave the public the opportunity to 

comment on the original NPRM (77 FR 

60060, October 2, 2012). We received no 

comments on that NPRM or on the 

determination of the cost to the public. 

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. 

Certain changes described above 

expand the scope of the earlier NPRM 

(77 FR 60060, October 2, 2012). As a 

result, we have determined that it is 

necessary to reopen the comment period 

to provide additional opportunity for 

the public to comment on this proposed 

AD. 

Costs of Compliance 

Based on the service information, we 

estimate that this proposed AD would 

affect about 399 products of U.S. 

registry. We also estimate that it would 

take about 63 work-hours per product to 

comply with the basic requirements of 

this proposed AD. The average labor 

rate is $85 per work-hour. Required 

parts would cost about $5,700 per 

product. Where the service information 

lists required parts costs that are 

covered under warranty, we have 

assumed that there will be no charge for 

these parts. As we do not control 

warranty coverage for affected parties, 

some parties may incur costs higher 

than estimated here. Based on these 

figures, we estimate the cost of the 

proposed AD on U.S. operators to be 

$4,410,945, or $11,055 per product. 

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. 

We prepared a regulatory 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 AD: 


tkelley on DSK3SPTVN1PROD with PROPOSALS
Federal Register / Vol. 78, No. 68 / Tuesday, April 9, 2013 / Proposed Rules 21079 

Bombardier, Inc.: Docket No. FAA–2012– 

1003; Directorate Identifier 2012–NM– 

064–AD. 

(a) Comments Due Date 

We must receive comments by May 24, 

2013. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Bombardier, Inc. Model 

DHC–8–400, –401, and –402 airplanes, 

certificated in any category, serial numbers 

(S/Ns) 4001 through 4399 inclusive. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 26, Fire protection. 

(e) Reason 

This AD was prompted by reports of 

advance pneumatic detectors (APDs) for 

engine fire/overheat detector assemblies 

failing to reset after activation due to 

permanent deformation of the detector 

switch diaphragm after being exposed to high 

temperatures. We are issuing this AD to 

prevent a continued engine fire indication in 

the cockpit after the actual fire has been 

extinguished, which is misleading and might 

influence the pilot to conduct a potentially 

hazardous ‘‘off-airport’’ landing. 

(f) Compliance 

You are responsible for having the actions 

required by this AD performed within the 

compliance times specified, unless the 

actions have already been done. 

(g) Installation 

Within 6,000 flight hours or 30 months 

after the effective date of this AD, whichever 

occurs first, replace the APDs as specified in 

paragraphs (g)(1), (g)(2), and (g)(3) of this AD, 

as applicable. 

(1) For airplanes having S/Ns 4001 through 

4373 inclusive: For the nacelle of the engine 

primary zone, remove any APD having part 

number (P/N) 10–1098 and install a new APD 

having P/N 10–1098–01, in accordance with 

the Accomplishment Instructions of 

Bombardier Service Bulletin 84–26–08, 

Revision B, dated September 24, 2012. 

(2) For airplanes having S/Ns 4001 through 

4373 inclusive: For the nacelle of the landing 

gear primary zone, remove any APD having 

P/N 10–1097 or 10–1097–01 and install a 

new APD having P/N 10–1097–02, in 

accordance with the Accomplishment 

Instructions of Bombardier Service Bulletin 

84–26–09, Revision A, dated May 12, 2011. 

(3) For all airplanes: For the propeller 

engine controller, remove any APD having P/ 

N 10–1096, 10–1096–01, or 10–1096–02 

(serial number is all numeric characters), and 

install a new APD having P/N 10–1096–02 

(serial number is three alpha and four 

numeric characters), in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 84–26–12, Revision B, dated 

October 12, 2012. 

(h) Credit for Previous Actions 

(1) This paragraph provides credit for 

actions required by paragraph (g)(1) of this 

AD, if those actions were performed before 

the effective date of this AD using the service 

information specified in paragraph (h)(1)(i) or 

(h)(1)(ii) of this AD, which are not 

incorporated by reference in this AD. 

(i) Bombardier Service Bulletin 84–26–08, 

dated March 11, 2011. 

(ii) Bombardier Service Bulletin 84–26–08, 

Revision A, dated May 12, 2011. 

(2) This paragraph provides credit for 

actions required by paragraph (g)(2) of this 

AD, if those actions were performed before 

the effective date of this AD using 

Bombardier Service Bulletin 84–26–09, dated 

March 11, 2011, which is not incorporated by 

reference in this AD. 

(3) This paragraph provides credit for 

actions required by paragraph (g)(3) of this 

AD, if those actions were performed before 

the effective date of this AD using the service 

information specified in paragraph (h)(3)(i) or 

(h)(3)(ii) of this AD, which are not 

incorporated by reference in this AD. 

(i) Bombardier Service Bulletin 84–26–12, 

dated October 12, 2011. 

(ii) Bombardier Service Bulletin 84–26–12, 

Revision A, dated December 13, 2011. 

(i) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York Aircraft 

Certification Office (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) Airworthy Product: For any requirement 

in this AD to obtain corrective actions from 

a manufacturer or other source, use these 

actions if they are FAA-approved. Corrective 

actions are considered FAA-approved if they 

are approved by the State of Design Authority 

(or their delegated agent). You are required 

to assure the product is airworthy before it 

is returned to service. 

(j) Related Information 

(1) Refer to MCAI Canadian Airworthiness 

Directive CF–2012–07R1, effective December 

21, 2012; and the service information 

identified in paragraphs (j)(1)(i), (j)(1)(ii), and 

(j)(1)(iii) of this AD; for related information. 

(i) Bombardier Service Bulletin 84–26–08, 

Revision B, dated September 24, 2012. 

(ii) Bombardier Service Bulletin 84–26–09, 

Revision A, dated May 12, 2011. 

(iii) Bombardier Service Bulletin 84–26–12, 

Revision B, dated October 12, 2012. 

(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 review copies of the 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. 

Issued in Renton, Washington, on March 

28, 2013. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2013–08203 Filed 4–8–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2013–0297; Directorate 

Identifier 2012–NM–205–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. This proposed 

AD was prompted by a report of 

cracking in a lower longeron in a 

nacelle. This proposed AD would 

require repetitive inspections for 

cracking of the lower longerons in the 

nacelles and replacement with new 

longerons or repair if necessary. 

Additionally, this proposed AD 

specifies an optional terminating action. 

We are proposing this AD to detect and 

correct such cracking, which could 

result in degradation of the structural 

integrity of the nacelle and possible 

collapse of the main landing gear 

(MLG). 

DATES: We must receive comments on 

this proposed AD by May 24, 2013. 

ADDRESSES: You may send comments 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. 


tkelley on DSK3SPTVN1PROD with PROPOSALS