70106 Federal Register / Vol. 75, No. 221 / Wednesday, November 17, 2010 / Rules and Regulations 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0699; Directorate 

Identifier 2009–NM–236–AD; Amendment 

39–16510; AD 2010–23–21] 

RIN 2120–AA64 

Airworthiness Directives; Viking Air 

Limited (Type Certificate Previously 

Held by Bombardier, Inc.) Model DHC– 

7 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: 

Viking Air Limited has completed a system 

safety review of the aircraft fuel system 

against fuel tank safety standards introduced 

in Chapter 525 of the Airworthiness Manual 

through Notice of Proposed Amendment 

(NPA) 2002–043. The identified noncompliances were then assessed using 

Transport Canada Policy Letter No. 525–001, 

to determine if mandatory corrective action 

is required. 

The assessment showed that supplemental 

maintenance tasks would be required to 

prevent potential ignition sources within the 

fuel system, which could result in a fuel tank 

explosion. * * * 

We are issuing this AD to require 

actions to correct the unsafe condition 

on these products. 

DATES: This AD becomes effective 

December 22, 2010. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of December 22, 2010. 

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: 

Richard Fiesel, Aerospace Engineer, 

Airframe and Mechanical Systems 

Branch, ANE–171, FAA, New York 

Aircraft Certification Office, 1600 

Stewart Avenue, Suite 410, Westbury, 

New York 11590; telephone (516) 228– 

7304; 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 July 23, 2010, (75 FR 

43092). That NPRM proposed to correct 

an unsafe condition for the specified 

products. The MCAI states: 

Viking Air Limited has completed a system 

safety review of the aircraft fuel system 

against fuel tank safety standards introduced 

in Chapter 525 of the Airworthiness Manual 

through Notice of Proposed Amendment 

(NPA) 2002–043. The identified noncompliances were then assessed using 

Transport Canada Policy Letter No. 525–001, 

to determine if mandatory corrective action 

is required. 

The assessment showed that supplemental 

maintenance tasks would be required to 

prevent potential ignition sources within the 

fuel system, which could result in a fuel tank 

explosion. Viking Air Limited has revised 

Chapter 5 of the DHC–7 Maintenance 

Manual, PSM 1–7–2, to introduce the 

required maintenance tasks. 

The corrective action is revising the 

Airworthiness Limitations Section of 

the Instructions for Continued 

Airworthiness to incorporate new 

limitations for fuel tank systems. 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. 

Clarification of Table Reference 

Table 1—Temporary Revisions of the 

NPRM has a typographical error. ‘‘FLS– 

06’’ is corrected in Table 1 of this AD 

to ‘‘FSL–06.’’ 

Clarification of Viking DHC–7 Dash 7 

Maintenance Manual Section Number 

Paragraph (g) of the NPRM has a 

typographical error. ‘‘Section 5–10–30’’ 

is corrected in paragraph (g) of this AD 

to ‘‘Section 5–10–13.’’ 

Conclusion 

We reviewed the available data and 

determined that air safety and the 

public interest require adopting the AD 

with the correction described 

previously. We determined that this 

correction will not increase the 

economic burden on any operator or 

increase the scope of the AD. 

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 

11 products of U.S. registry. We also 

estimate that it will take about 1 workhour per product to comply with the 

basic requirements of this AD. The 

average labor rate is $85 per work-hour. 

Based on these figures, we estimate the 

cost of this AD to the U.S. operators to 

be $935, or $85 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 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; 


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Federal Register / Vol. 75, No. 221 / Wednesday, November 17, 2010 / Rules and Regulations 70107 

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: 

2010–23–21 Viking Air Limited (Type 

Certificate Previously Held by 

Bombardier, Inc.): Amendment 39– 

16510. Docket No. FAA–2010–0699; 

Directorate Identifier 2009–NM–236–AD. 

Effective Date 

(a) This airworthiness directive (AD) 

becomes effective December 22, 2010. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Viking Air Limited 

(Type Certificate previously held by 

Bombardier, Inc.) Model DHC–7–1, DHC–7– 

100, DHC–7–101, DHC–7–102, and DHC–7– 

103 airplanes; certificated in any category. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 28: Fuel. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

Viking Air Limited has completed a system 

safety review of the aircraft fuel system 

against fuel tank safety standards introduced 

in Chapter 525 of the Airworthiness Manual 

through Notice of Proposed Amendment 

(NPA) 2002–043. The identified noncompliances were then assessed using 

Transport Canada Policy Letter No. 525–001, 

to determine if mandatory corrective action 

is required. 

The assessment showed that supplemental 

maintenance tasks would be required to 

prevent potential ignition sources within the 

fuel system, which could result in a fuel tank 

explosion. * * * 

The corrective action is revising the 

Airworthiness Limitations Section of the 

Instructions for Continued Airworthiness to 

incorporate new limitations for fuel tank 

systems. 

Compliance 

(f) You are responsible for having the 

actions required by this AD performed within 

the compliance times specified, unless the 

actions have already been done. 

Actions 

(g) Within 60 days after the effective date 

of this AD, incorporate all the fuel system 

limitation (FSL) tasks as specified in the 

temporary revisions (TR) listed in Chapter 5 

of the Viking Dash 7 Series 1/100 Aircraft 

Maintenance Manual (AMM), PSM 1–7–2; 

and incorporate Section 5–10–13, as 

specified in Viking Air Limited TR 5–106, 

dated December 15, 2008, to Chapter 5 of the 

Viking Dash 7 Series 100 Maintenance 

Manual PSM 1–7–2. 

Note 1: This may be done by inserting 

copies of the TRs identified in paragraph (g) 

of this AD in the AMM. When these TRs have 

been included in general revisions of the 

AMM, the general revisions may be inserted 

in the AMM, provided the relevant 

information in the general revision is 

identical to that in the TRs identified in 

paragraph (g) of this AD. 

(h) At the applicable time specified in 

paragraphs (h)(1), (h)(2), (h)(3), and (h)(4) of 

this AD, do the initial inspections in 

accordance with the applicable TR identified 

in Table 1 of this AD. 

(1) For Tasks FSL–01, FSL–02, FSL–03, 

FSL–04 and FSL–05: Inspect at the later of 

the times specified in paragraphs (h)(1)(i) and 

(h)(1)(ii) of this AD. 

(i) Prior to the accumulation of 18,000 total 

flight hours. 

(ii) Within 6,000 flight hours or within 36 

months after the effective date of this AD, 

whichever occurs first. 

(2) For Task FSL–06: Inspect at the later of 

the times specified in paragraphs (h)(2)(i) and 

(h)(2)(ii) of this AD. 

(i) Prior to the accumulation of 40,000 total 

flight hours. 

(ii) Within 6,000 flight hours or within 36 

months after the effective date of this AD, 

whichever occurs first. 

(3) For Task FSL–07: Within 1 month after 

the effective date of this AD. 

(4) For Task FSL–08: Inspect at the later of 

the times specified in paragraphs (h)(4)(i) and 

(h)(4)(ii) of this AD. 

(i) Prior to the accumulation of 4,000 total 

flight hours. 

(ii) Within 2,000 flight hours or within 12 

months after the effective date of this AD, 

whichever occurs first. 

TABLE 1—TEMPORARY REVISIONS

Task— Viking TR— Date— 

FSL–01 ........................................................................................................................................................ 5–107 December 15, 2008. 

FSL–02 ........................................................................................................................................................ 5–108 December 15, 2008. 

FSL–06 ........................................................................................................................................................ 5–109 December 15, 2008. 

FSL–07 ........................................................................................................................................................ 5–110 December 15, 2008. 

FSL–08 ........................................................................................................................................................ 5–111 December 15, 2008. 

FSL–03 ........................................................................................................................................................ 5–112 December 15, 2008. 

FSL–04 and FSL–05 ................................................................................................................................... 5–113 December 15, 2008. 

FAA AD Differences 

Note 2: This AD differs from the MCAI 

and/or service information as follows: No 

differences. 

Other FAA AD Provisions 

(i) 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. 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 


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on any airplane to which the AMOC applies, 

notify your principal maintenance inspector 

(PMI) or principal avionics inspector (PAI), 

as appropriate, or lacking a principal 

inspector, your local Flight Standards 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. 

(3) Reporting Requirements: For any 

reporting requirement in this AD, under the 

provisions of the Paperwork Reduction Act 

(44 U.S.C. 3501 et seq.), the Office of 

Management and Budget (OMB) has 

approved the information collection 

requirements and has assigned OMB Control 

Number 2120–0056. 

Related Information 

(j) Refer to MCAI Canadian Airworthiness 

Directive CF–2009–15, dated April 17, 2009, 

and the TRs identified in Table 2 of this AD, 

for related information. 

TABLE 2—RELATED SERVICE INFORMATION

Viking TR— Dated— Chapter 5 of the— 

5–106 ............................................ December 15, 2008 .................................................... Viking Dash 7 Series 1/100 AMM, PSM 1–7–2. 

5–107 ............................................ December 15, 2008 .................................................... Viking Dash 7 Series 100 Maintenance Manual, 

PSM 1–7–2. 

5–108 ............................................ December 15, 2008 .................................................... Viking Dash 7 Series 100 Maintenance Manual, 

PSM 1–7–2. 

5–109 ............................................ December 15, 2008 .................................................... Viking Dash 7 Series 100 Maintenance Manual, 

PSM 1–7–2. 

5–110 ............................................ December 15, 2008 .................................................... Viking Dash 7 Series 100 Maintenance Manual, 

PSM 1–7–2. 

5–111 ............................................ December 15, 2008 .................................................... Viking Dash 7 Series 100 Maintenance Manual, 

PSM 1–7–2. 

5–112 ............................................ December 15, 2008 .................................................... Viking Dash 7 Series 100 Maintenance Manual, 

PSM 1–7–2. 

5–113 ............................................ December 15, 2008 .................................................... Viking Dash 7 Series 100 Maintenance Manual, 

PSM 1–7–2. 

Material Incorporated by Reference 

(k) You must use the service information 

contained in Table 3 of this AD to do the 

actions required by this AD, unless the AD 

specifies otherwise. 

TABLE 3—MATERIAL INCORPORATED BY REFERENCE

Viking TR— Dated— Chapter 5 of the— 

5–106 ............................................ December 15, 2008 .................................................... Viking Dash 7 Series 1/100 Airplane Maintenance 

Manual, PSM 1–7–2. 

5–107 ............................................ December 15, 2008 .................................................... Viking Dash 7 Series 100 Maintenance Manual, 

PSM 1–7–2. 

5–108 ............................................ December 15, 2008 .................................................... Viking Dash 7 Series 100 Maintenance Manual, 

PSM 1–7–2. 

5–109 ............................................ December 15, 2008 .................................................... Viking Dash 7 Series 100 Maintenance Manual, 

PSM 1–7–2. 

5–110 ............................................ December 15, 2008 .................................................... Viking Dash 7 Series 100 Maintenance Manual, 

PSM 1–7–2. 

5–111 ............................................ December 15, 2008 .................................................... Viking Dash 7 Series 100 Maintenance Manual, 

PSM 1–7–2. 

5–112 ............................................ December 15, 2008 .................................................... Viking Dash 7 Series 100 Maintenance Manual, 

PSM 1–7–2. 

5–113 ............................................ December 15, 2008 .................................................... Viking Dash 7 Series 100 Maintenance Manual, 

PSM 1–7–2. 

(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 Viking Air Limited, 9574 

Hampden Road, Sidney, British Columbia, 

V8L 8V5, Canada; telephone 250–656–7227; 

fax 250–656–0673; e-mail 

technical.publications@vikingair.com; 

Internet http://www.vikingair.com. 

(3) You may review copies of the service 

information at the FAA, Transport Airplane 

Directorate, 1601 Lind Avenue, SW., Renton, 

Washington. For information on the 

availability of this material at the FAA, call 

425–227–1221. 

(4) You may also review copies of the 

service information that is incorporated by 

reference 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/

code_of_federal_regulations/

ibr_locations.html. 

Issued in Renton, Washington, on 

November 2, 2010. 

Dionne Palermo, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2010–28273 Filed 11–16–10; 8:45 am] 

BILLING CODE 4910–13–P 


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