Federal Register / Vol. 73, No. 28 / Monday, February 11, 2008 / Rules and Regulations 7661 

(or their delegated agent). You are required 

to assure the product is airworthy before it 

is returned to service. 

(3) Reporting Requirements: For any 

reporting requirement in this AD, under the 

provisions of the Paperwork Reduction Act, 

the Office of Management and Budget (OMB) 

has approved the information collection 

requirements and has assigned OMB Control 

Number 2120–0056. 

Related Information 

(h) Refer to MCAI EASA Airworthiness 

Directive 2007–0168, dated June 15, 2007; 

Saab Service Bulletin 340–57–031, Revision 

02, dated September 28, 2005; and Saab 

Service Bulletin 340–57–010, dated March 

28, 1989; for related information. 

Material Incorporated by Reference 

(i) You must use Saab Service Bulletin 

340–57–031, Revision 02, dated September 

28, 2005; and Saab Service Bulletin 340–57–

010, dated March 28, 1989; as applicable; to 

do the actions required by this AD, unless the 

AD specifies otherwise. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

this service information under 5 U.S.C. 

552(a) and 1 CFR part 51. 

(2) For service information identified in 

this AD, contact Saab Aircraft AB, SAAB 

Aircraft Product Support, S–581.88, 

Linko ̈ping, Sweden. 

(3) You may review copies at the FAA, 

Transport Airplane Directorate, 1601 Lind 

Avenue, SW., Renton, Washington; or at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, call 

(202) 741–6030, or go to: http:// 

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued in Renton, Washington, on January 

31, 2008. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E8–2344 Filed 2–8–08; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2007–0262; Directorate 

Identifier 2007–NM–247–AD; Amendment 

39–15370; AD 2008–03–19] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier 

Model CL–600–2B19 (Regional Jet 

Series 100 & 440) Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for the 

products listed above. This AD results 

from mandatory continuing 

airworthiness information (MCAI) 

originated by an aviation authority of 

another country to identify and correct 

an unsafe condition on an aviation 

product. The MCAI describes the unsafe 

condition as: 

Bombardier Aerospace has completed a 

system safety review of the CL–600–2B19 

aircraft fuel system * * *. 

The assessment showed that sealant has 

not been applied to bolts on the collector fuel 

tanks or the transfer ejector fuel pumps. Lack 

of sealant on the above-noted locations, if not 

corrected, could result in arcing and 

potential ignition source inside the fuel tank 

during lightning strikes and consequent fuel 

tank explosion. * * * 

We are issuing this AD to require 

actions to correct the unsafe condition 

on these products. 

DATES: This AD becomes effective 

March 17, 2008. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of March 17, 2008. 

ADDRESSES: You may examine the AD 

docket on the Internet at http:// 

www.regulations.gov or in person at the 

U.S. Department of Transportation, 

Docket Operations, M–30, West 

Building Ground Floor, Room W12–140, 

1200 New Jersey Avenue, SE., 

Washington, DC. 

FOR FURTHER INFORMATION CONTACT: 

Rocco Viselli, Aerospace Engineer, 

Airframe and Propulsion Branch, ANE–

171, FAA, New York Aircraft 

Certification Office, 1600 Stewart 

Avenue, Suite 410, Westbury, New York 

11590; telephone (516) 228–7331; fax 

(516) 794–5531. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an AD that would 

apply to the specified products. That 

NPRM was published in the Federal 

Register on December 3, 2007 (72 FR 

67870). That NPRM proposed to correct 

an unsafe condition for the specified 

products. The MCAI states: 

Bombardier Aerospace has completed a 

system safety review of the CL–600–2B19 

aircraft fuel system against new fuel tank 

safety standards, introduced in Chapter 525 

of the Airworthiness Manual through Notice 

of Proposed Amendment (NPA) 2002–043. 

The identified non-compliances were 

assessed using Transport Canada Policy 

Letter No. 525–001 to determine if mandatory 

corrective action is required. 

The assessment showed that sealant has 

not been applied to bolts on the collector fuel 

tanks or the transfer ejector fuel pumps. Lack 

of sealant on the above-noted locations, if not 

corrected, could result in arcing and 

potential ignition source inside the fuel tank 

during lightning strikes and consequent fuel 

tank explosion. To correct the unsafe 

condition, this directive mandates the 

application of sealant to the bolts that attach 

various fittings on the collector fuel tanks, 

[an inspection for a fillet seal and if 

necessary application of fillet seal] to the 

edges of the transfer ejector pumps and [an 

inspection for sealant and if necessary 

application of sealant] to the bolts that attach 

the transfer ejector pump to the transfer 

ejector pump casing. 

You may obtain further information by 

examining the MCAI in the AD docket. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

received no comments on the NPRM or 

on the determination of the cost to the 

public. 

Conclusion 

We reviewed the available data and 

determined that air safety and the 

public interest require adopting the AD 

as proposed. 

Differences Between This AD and the 

MCAI or Service Information 

We have reviewed the MCAI and 

related service information and, in 

general, agree with their substance. But 

we might have found it necessary to use 

different words from those in the MCAI 

to ensure the AD is clear for U.S. 

operators and is enforceable. In making 

these changes, we do not intend to differ 

substantively from the information 

provided in the MCAI and related 

service information. 

We might also have required different 

actions in this AD from those in the 

MCAI in order to follow our FAA 

policies. Any such differences are 

highlighted in a Note within the AD. 

Costs of Compliance 

We estimate that this AD will affect 

about 626 products of U.S. registry. We 

also estimate that it will take about 31 

work-hours per product to comply with 

the basic requirements of this AD. The 

average labor rate is $80 per work-hour. 

Required parts will cost a negligible 

amount 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 

this AD to the U.S. operators to be 

$1,552,480, or $2,480 per product. 

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7662 Federal Register / Vol. 73, No. 28 / Monday, February 11, 2008 / Rules and Regulations 

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 AD will not 

have federalism implications under 

Executive Order 13132. This AD will 

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 AD: 

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); and 

3. 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 AD and placed it in the AD docket. 

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 the 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. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

Adoption of the Amendment 

■ Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 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: 

2008–03–19 Bombardier, Inc. (Formerly 

Canadair): Amendment 39–15370. 

Docket No. FAA–2007–0262; Directorate 

Identifier 2007–NM–247–AD. 

Effective Date 

(a) This airworthiness directive (AD) 

becomes effective March 17, 2008. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Bombardier Model 

CL–600–2B19 (Regional Jet Series 100 & 440) 

airplanes, serial numbers 7003 through 7067 

and 7069 through 7924; certificated in any 

category. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 28: Fuel. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

Bombardier Aerospace has completed a 

system safety review of the CL–600–2B19 

aircraft fuel system against new fuel tank 

safety standards, introduced in Chapter 525 

of the Airworthiness Manual through Notice 

of Proposed Amendment (NPA) 2002–043. 

The identified non-compliances were 

assessed using Transport Canada Policy 

Letter No. 525–001 to determine if mandatory 

corrective action is required. 

The assessment showed that sealant has 

not been applied to bolts on the collector fuel 

tanks or the transfer ejector fuel pumps. Lack 

of sealant on the above-noted locations, if not 

corrected, could result in arcing and 

potential ignition source inside the fuel tank 

during lightning strikes and consequent fuel 

tank explosion. To correct the unsafe 

condition, this directive mandates the 

application of sealant to the bolts that attach 

various fittings on the collector fuel tanks, 

[an inspection for a fillet seal and if 

necessary application of fillet seal] to the 

edges of the transfer ejector pumps and [an 

inspection for sealant and if necessary 

application of sealant] to the bolts that attach 

the transfer ejector pump to the transfer 

ejector pump casing. 

Actions and Compliance 

(f) Unless already done, do the following 

actions. 

(1) Within 5,000 flight hours after the 

effective date of this AD: For airplanes with 

serial numbers 7003 through 7067 and 7069 

through 7797, apply sealant to bolts on the 

collector fuel tanks according to the 

Accomplishment Instructions of Bombardier 

Service Bulletin 601R–28–051, Revision A, 

dated March 30, 2005. 

(2) Within 5,000 flight hours after the 

effective date of this AD: For airplanes with 

serial numbers 7003 through 7067 and 7069 

through 7924, do a general visual inspection 

of the left and right transfer ejector pumps for 

the presence of a fillet seal on the edge of the 

pumps and sealant on the bolts, according to 

the Accomplishment Instructions of 

Bombardier Service Bulletin 601R–28–060, 

Revision A, dated March 30, 2005. 

(3) If during the inspection required by 

paragraph (f)(2) of this AD any fillet seal is 

found missing from the edge of the transfer 

ejector pump or sealant is found missing 

from any of the bolts, prior to further flight, 

apply fillet seal and sealant as applicable to 

the affected areas according to the 

Accomplishment Instructions of Bombardier 

Service Bulletin 601R–28–060, Revision A, 

dated March 30, 2005. 

(4) Application of sealant prior to the 

effective date of this AD according to 

Bombardier Service Bulletin 601R–28–051, 

dated May 12, 2003, satisfies the 

requirements of paragraph (f)(1) of this AD. 

(5) Inspection and application of sealant 

and fillet seal prior to the effective date of 

this AD according to Bombardier Service 

Bulletin 601R–28–060, dated January 28, 

2004, satisfy the corresponding requirements 

of paragraphs (f)(2) and (f)(3) of this AD. 

FAA AD Differences 

Note: This AD differs from the MCAI and/ 

or service information as follows: No 

differences. 

Other FAA AD Provisions 

(g) The following provisions also apply to 

this AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York Aircraft 

Certification Office, FAA, has the authority to 

approve AMOCs for this AD, if requested 

using the procedures found in 14 CFR 39.19. 

Send information to ATTN: Rocco Viselli, 

Aerospace Engineer, Airframe and 

Propulsion Branch, ANE–171, FAA, New 

York Aircraft Certification Office, 1600 

Stewart Avenue, Suite 410, Westbury, New 

York 11590; telephone (516) 228–7331; fax 

(516) 794–5531. Before using any approved 

AMOC on any airplane to which the AMOC 

applies, notify your appropriate principal 

inspector (PI) in the FAA Flight Standards 

District Office (FSDO), or lacking a PI, your 

local FSDO. 

(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 

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Federal Register / Vol. 73, No. 28 / Monday, February 11, 2008 / Rules and Regulations 7663 

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. 

(3) Reporting Requirements: For any 

reporting requirement in this AD, under the 

provisions of the Paperwork Reduction Act, 

the Office of Management and Budget (OMB) 

has approved the information collection 

requirements and has assigned OMB Control 

Number 2120–0056. 

Related Information 

(h) Refer to MCAI Canadian Airworthiness 

Directive CF–2007–17, dated September 4, 

2007; and Bombardier Service Bulletins 

601R–28–051 and 601R–28–060, both 

Revision A, both dated March 30, 2005; for 

related information. 

Material Incorporated by Reference 

(i) You must use Bombardier Service 

Bulletin 601R–28–051, Revision A, dated 

March 30, 2005; and Bombardier Service 

Bulletin 601R–28–060, Revision A, dated 

March 30, 2005; as applicable; to do the 

actions required by this AD, unless the AD 

specifies otherwise. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

this service information under 5 U.S.C. 

552(a) and 1 CFR part 51. 

(2) For service information identified in 

this AD, contact Bombardier, Inc., Canadair, 

Aerospace Group, P.O. Box 6087, Station 

Centre-ville, Montreal, Quebec H3C 3G9, 

Canada. 

(3) You may review copies at the FAA, 

Transport Airplane Directorate, 1601 Lind 

Avenue, SW., Renton, Washington; or at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, call 

(202) 741–6030, or go to: http:// 

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued in Renton, Washington, on January 

31, 2008. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E8–2343 Filed 2–8–08; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2008–0153; Directorate 

Identifier 2007–NM–243–AD; Amendment 

39–15372; AD 2008–03–21] 

RIN 2120–AA64 

Airworthiness Directives; Fokker 

Model F.27 Mark 050 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule; request for 

comments. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for the 

products listed above. This AD results 

from mandatory continuing 

airworthiness information (MCAI) 

originated by an aviation authority of 

another country to identify and correct 

an unsafe condition on an aviation 

product. The MCAI describes the unsafe 

condition as: 

* * * * * 

Recently, it was discovered that the 

inspection procedure as described by Fokker 

50 Non-Destructive Testing Manual (NDTM), 

Part 6, Chapter 53–30–02, which is 

referenced by Fokker 50 Maintenance Review 

Board (MRB) Tasks Number 530000–00–04 

and 530000–00–08 [currently required per 

AD (BLA) 2002–061], did not show the 

correct inspection areas. In addition to the 

existing procedure, the area at the kink in the 

bottom fuselage skin, the actual chine line, 

must be inspected. Investigation revealed 

that a number of aircraft have already passed 

the relevant inspection thresholds of 20,000 

and 45,000 flight cycles by a considerable 

margin. As a result, it may be possible that 

cracks have developed and remained 

undetected. * * * 

* * * * * 

The unsafe condition is cracking and 

subsequent failure of the fuselage 

bottom skin, which could result in 

reduced structural integrity of the 

fuselage. This AD requires actions that 

are intended to address the unsafe 

condition described in the MCAI. 

DATES: This AD becomes effective 

February 26, 2008. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in the AD 

as of February 26, 2008. 

We must receive comments on this 

AD by March 12, 2008. 

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 

W12–40, 1200 New Jersey Avenue, SE., 

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

p.m., Monday through Friday, except 

Federal holidays. 

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 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: Tom 

Rodriguez, Aerospace Engineer, 

International Branch, ANM–116, FAA, 

Transport Airplane Directorate, 1601 

Lind Avenue, SW., Renton, Washington 

98057–3356; telephone (425) 227–1137; 

fax (425) 227–1149. 

SUPPLEMENTARY INFORMATION: 

Discussion 

The Civil Aviation Authority—The 

Netherlands (CAA–NL), which is the 

aviation authority for the Netherlands, 

has issued Dutch Airworthiness 

Directive NL–2006–009 R1 dated 

September 28, 2006 (referred to after 

this as ‘‘the MCAI’’), to correct an unsafe 

condition for the specified products. 

The MCAI states: 

* * * * * 

Recently, it was discovered that the 

inspection procedure as described by Fokker 

50 Non-Destructive Testing Manual (NDTM), 

Part 6, Chapter 53–30–02, which is 

referenced by Fokker 50 Maintenance Review 

Board (MRB) Tasks Number 530000–00–04 

and 530000–00–08 [currently required per 

AD (BLA) 2002–061], did not show the 

correct inspection areas. In addition to the 

existing procedure, the area at the kink in the 

bottom fuselage skin, the actual chine line, 

must be inspected. Investigation revealed 

that a number of aircraft have already passed 

the relevant inspection thresholds of 20,000 

and 45,000 flight cycles by a considerable 

margin. As a result, it may be possible that 

cracks have developed and remained 

undetected. To prevent future use of the 

incorrect procedure in NDTM, Part 6, chapter 

53–30–02, Fokker Services has removed this 

procedure from the NDTM and replaced by 

chapter 53–30–03 (refer to NDTM Temporary 

Revisions No. 53–004 and 53–005 dated 

September 15, 2006). Furthermore the Fokker 

50/60 Maintenance Planning Document (refer 

to MPD Temporary Revision No. 53–009 

dated August 15, 2006) has been revised to 

delete references to the incorrect procedure 

and to include references to the correct 

procedure of NDTM, Part 6, chapter 53–30–

03. This condition, if not corrected, could 

result in failure of the fuselage bottom skin. 

Since an unsafe condition has been identified 

that is likely to exist or develop on aircraft 

of this type design, CAA–NL has originally 

published AD NL–2006–009, which is now 

replaced by NL–2006–009 R1. 

This directive requires a one-time 

inspection of the fuselage bottom skin at the 

chine line, of the area not covered by the 

procedure of NDTM, Part 6, chapter 53–30–

02. This one-time inspection consists of two 

parts: 

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