61348 Federal Register / Vol. 75, No. 192 / Tuesday, October 5, 2010 / Rules and Regulations 

reference at the National Archives and 

Records Administration (NARA). For 

information on the availability of this 

material at an NARA facility, call 202–741– 

6030, or go to http://www.archives.gov/ 

federal_register/code_of_federal_regulations/ 

ibr_locations.html. 

Issued in Kansas City, Missouri, on 

September 24, 2010. 

Patrick R. Mullen, 

Acting Manager, Small Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2010–24611 Filed 10–4–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0276; Directorate 

Identifier 2009–NM–144–AD; Amendment 

39–16452; AD 2010–20–17] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. 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 superseding an 

existing 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: 

Three cases of in-flight loss of cabin 

pressurization have been reported, resulting 

from failure of a bulkhead check valve in 

combination with failure of an air supply 

duct. 

In addition to mandating inspection, 

rework and/or replacement of the air supply 

ducts, Airworthiness Directive (AD) CF– 

2003–05 (subsequently revised to CF–2003– 

05R1) [which corresponds to FAA AD 2004– 

22–08] mandated the incorporation of a 4000 

flight-hour repetitive inspection task for 

bulkhead check valves, Part Numbers (P/N) 

92E20–3 and 92E20–4, into the approved 

maintenance schedule. However, this 

repetitive inspection task has since been 

superseded by a 3000 flight-hour periodic 

discard task for these bulkhead check valves. 

This directive mandates revision of the 

approved maintenance schedule to 

incorporate the discard task for bulkhead 

check valves, P/N 92E20–3 and 92E20–4, and 

supersedes the instructions in Corrective 

Actions, Part A, of AD CF–2003–05R1, dated 

7 February 2006. 

We are issuing this AD to require 

actions to correct the unsafe condition 

on these products. 

DATES: This AD becomes effective 

November 9, 2010. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of November 9, 2010. 

On December 2, 2004 (69 FR 62807, 

October 28, 2004), the Director of the 

Federal Register approved the 

incorporation by reference of certain 

other publications listed in this AD. 

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: 

Christopher Alfano, Airframe and 

Mechanical Systems Branch, ANE–171, 

FAA, New York Aircraft Certification 

Office (ACO), 1600 Stewart Avenue, 

Suite 410, Westbury, New York 11590; 

telephone (516) 228–7340; 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 April 5, 2010 (75 FR 17086). 

That NPRM proposed to correct an 

unsafe condition for the specified 

products. The MCAI states: 

Three cases of in-flight loss of cabin 

pressurization have been reported, resulting 

from failure of a bulkhead check valve in 

combination with failure of an air supply 

duct. 

In addition to mandating inspection, 

rework and/or replacement of the air supply 

ducts, Airworthiness Directive (AD) CF– 

2003–05 (subsequently revised to CF–2003– 

05R1) [which corresponds to FAA AD 2004– 

22–08] mandated the incorporation of a 4000 

flight-hour repetitive inspection task for 

bulkhead check valves, Part Numbers (P/N) 

92E20–3 and 92E20–4, into the approved 

maintenance schedule. However, this 

repetitive inspection task has since been 

superseded by a 3000 flight-hour periodic 

discard task for these bulkhead check valves. 

This directive mandates revision of the 

approved maintenance schedule to 

incorporate the discard task for bulkhead 

check valves, P/N 92E20–3 and 92E20–4, and 

supersedes the instructions in Corrective 

Actions, Part A, of AD CF–2003–05R1, dated 

7 February 2006. 

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 

considered the comments received. 

Request to Provide Credit for Actions 

Accomplished Per Previous Issue of 

Service Bulletin 

Air Wisconsin requests that credit be 

provided for actions accomplished in 

accordance with a previous issue of a 

service bulletin. Air Wisconsin states 

that paragraph (g)(3) of the NPRM 

specifies that actions accomplished in 

accordance with Bombardier Alert 

Service Bulletin A601R–21–053, dated 

November 8, 2001, are considered 

acceptable for compliance; however, 

paragraph (i) of the NPRM states that 

Bombardier Alert Service Bulletin 

A601R–21–053, Revision ‘A,’ dated 

January 28, 2003, needs to be 

accomplished. Air Wisconsin states that 

the NPRM should provide credit for 

actions accomplished in accordance 

with Bombardier Alert Service Bulletin 

A601R–21–053, dated November 8, 

2001; and Revision ‘A,’ dated January 

28, 2003. Air Wisconsin states that 

Revision ‘A’ did not affect airplanes on 

which actions were accomplished in 

accordance with the original issue of 

that service bulletin. Air Wisconsin 

states that its affected airplanes were 

modified in accordance with 

Bombardier Alert Service Bulletin 

A601R–21–053, dated November 8, 

2001. 

We agree that credit should be given 

for actions done in accordance with 

Bombardier Alert Service Bulletin 

A601R–21–053, dated November 8, 

2001, and note that this AD does 

provide credit. In the ‘‘Restatement of 

Requirements of AD 2004–22–08, 

Amendment 39–13836’’ section of this 

AD, we refer to the latest revision of the 

service bulletin, Bombardier Alert 

Service Bulletin A601R–21–053, 

Revision ‘A,’ dated January 28, 2003, for 

accomplishing the actions specified in 

paragraphs (h) and (i) of this AD. In 

paragraph (g)(3) of this AD, we provide 

credit for actions done before December 

2, 2004 (the effective date of AD 2004– 

22–08) in accordance with Bombardier 

Alert Service Bulletin A601R–21–053, 

dated November 8, 2001, with the 

corresponding actions in paragraphs 

specified in paragraphs (h) and (i) of 

this AD. We have not changed the AD 

in regard to this issue. 

Request To Clarify the Requirements of 

Paragraph (j) of the NPRM 

Comair, Inc. (Comair) notes that 

paragraph (j) of the NPRM proposes to 

revise the Airworthiness Limitations 


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Federal Register / Vol. 75, No. 192 / Tuesday, October 5, 2010 / Rules and Regulations 61349 

section of the Instructions for Continued 

Airworthiness to include the 

information in Bombardier Temporary 

Revision (TR) 1–2–39, dated December 

12, 2008, to Section 2—Systems and 

Powerplant Program, of Part 1 of the 

Bombardier CL–600–2B19 Maintenance 

Requirement Manual (MRM). Comair 

states that the MRM is not structured to 

incorporate Part 1 items into Part 2 of 

the MRM. Comair notes that Note 3 of 

the NPRM allows the TR to be removed 

once the information in TR 1–2–39 has 

been incorporated into a general 

revision. Comair notes that Revision 14, 

dated September 10, 2009, of the MRM 

has incorporated the information in TR 

1–2–39. 

We infer that Comair is requesting 

that we clarify the requirements of 

paragraph (j) of the NPRM. We agree 

that clarification is necessary. The 

intent of revising Part 2 of the 

Airworthiness Limitations section is to 

prohibit approval of any alternative 

replacement times or structural 

inspection intervals for this bulkhead 

check valve. But, we have clarified Note 

3 of this AD to specify Part 2 of the 

Airworthiness Limitations section of the 

MRM. Note 3 of this AD states that the 

actions required by paragraph (j) of this 

AD may be done by inserting a copy of 

Bombardier TR 1–2–39, dated December 

12, 2008, into the MRM, which 

introduces Bombardier Task 21–51–21– 

13. When Bombardier Task 21–51–21– 

13 has been included in general 

revisions of the MRM, the general 

revisions may be inserted into Part 2 of 

the Airworthiness Limitations section of 

the MRM, provided the relevant 

information in the general revision is 

identical to that in the TR. 

Request To Clarify the Intent of 

Paragraph (j) of the NPRM 

Comair states that if the intent of 

paragraph (j) of the NPRM is to 

introduce the task into its proper part of 

the MRM, that is, Part 1, then doing so 

would contradict the rationale the FAA 

previously provided in AD 2004–22–08, 

Amendment 39–13836, (69 FR 62807, 

October 28, 2004). In AD 2004–22–08, 

the FAA responded to two requests to 

consider the MRM Task Number 21–51– 

21–07 as an alternative to using 

Bombardier Alert Service Bulletin 

A601R–21–054, dated November 8, 

2001. Comair points out that in AD 

2004–22–08 the FAA stated, ‘‘Although 

Part 1 of the MRM is accepted by the 

FAA, it is not approved, as is Part 2 of 

the Airworthiness Limitations section. 

We cannot control revisions of the 

MRM; therefore, a task could be 

changed or deleted, and the AD 

requirements would be modified 

without our approval.’’ Comair points 

out that by mandating the TR, the FAA 

is now requiring the documentation that 

it previously rejected incorporating in 

AD 2004–22–08. 

We infer that Comair is requesting 

clarification of the requirements of 

paragraph (j) of the NPRM. While the 

FAA reviews and acknowledges the 

contents of Part 1 of the MRM, Part 1 

does not require FAA approval to be 

changed. Consequently, the FAA cannot 

control revisions to this section of the 

MRM. However, the FAA does approve 

the contents of Part 2 of the MRM, 

which becomes legally enforceable. A 

task may be altered or deleted and may 

nullify the intent of the AD. However, 

operators may request approval of an 

AMOC to allow the use of a particular 

task card, provided a specified revision 

and date are adhered to. Any 

subsequent revisions would require a 

new AMOC request to ensure that the 

AD requirements are still met. We have 

not changed the AD in regard to this 

issue. 

Request To Allow Continuation of 

Previously Issued AMOCs 

Comair requests that paragraph (l)(1) 

of the NPRM be revised to accept 

previously issued AMOCs. Comair 

states that it has received AMOCs from 

the New York Aircraft Certification 

Office that have allowed it to perform 

inspections using Comair task cards for 

complying with MRM Task 21–51–21– 

07 instead of Bombardier Alert Service 

Bulletin A601R–21–054, dated 

November 8, 2001. 

We agree that the previously issued 

AMOCs to Comair continue to meet the 

requirements of this AD because they 

incorporated the bulkhead check valve 

discard task that is required by 

paragraph (j) of this AD. While we are 

not accepting all previously issued 

AMOCs that were granted for AD 2004– 

22–08, we have revised paragraph (l)(1) 

of this AD to accept those two specific 

AMOCs granted to Comair. 

Conclusion 

We reviewed the available data, 

including the comments received, and 

determined that air safety and the 

public interest require adopting the AD 

with the changes described previously. 

We determined that these changes 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 

Based on the service information, we 

estimate that this AD affects about 644 

products of U.S. registry. 

The actions that are required by AD 

2004–22–08 and retained in this AD 

take about 15 work-hours per product, 

at an average labor rate of $85 per work 

hour. Required parts cost about $0 per 

product. Based on these figures, the 

estimated cost of the currently required 

actions is $1,869 per product. 

We estimate that it takes about 1 

work-hour per product to comply with 

the new requirement to revise the ALI. 

The average labor rate is $85 per workhour. Based on these figures, we 

estimate the cost of this requirement of 

the AD on U.S. operators to be $54,740, 

or $85 per product. 

We estimate that it takes about 5 

work-hours per product to comply with 

the new inspection requirement. The 

average labor rate is $85 per work-hour. 

Required parts would cost about $594 

per product, per replacement cycle. 

Where the service information lists 

required parts costs that are covered 

under warranty, we have assumed that 

there will be no charge for these costs. 

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 inspection requirements of 

the AD on U.S. operators to be $656,236, 

or $1,019 per product, per replacement 

cycle. 

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 


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61350 Federal Register / Vol. 75, No. 192 / Tuesday, October 5, 2010 / Rules and 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 

removing Amendment 39–13836 (69 FR 

62807, October 28, 2004) and adding the 

following new AD: 

2010–20–17 Bombardier, Inc.: Amendment 

39–16452. Docket No. FAA–2010–0276; 

Directorate Identifier 2009–NM–144–AD. 

Effective Date 

(a) This airworthiness directive (AD) 

becomes effective November 9, 2010. 

Affected ADs 

(b) This AD supersedes AD 2004–22–08, 

Amendment 39–13836. 

Applicability 

(c) This AD applies to all Bombardier, Inc. 

Model CL–600–2B19 (Regional Jet Series 100 

& 440) airplanes, serial numbers 7003 and 

subsequent, certificated in any category. 

Note 1: This AD requires revisions to 

certain operator maintenance documents to 

include new inspections. Compliance with 

these inspections is required by 14 CFR 

91.403(c). For airplanes that have been 

previously modified, altered, or repaired in 

the areas addressed by these inspections, the 

operator may not be able to accomplish the 

inspections described in the revisions. In this 

situation, to comply with 14 CFR 91.403(c), 

the operator must request approval for an 

alternative method of compliance according 

to paragraph (l) of this AD. The request 

should include a description of changes to 

the required inspections that will ensure the 

continued operational safety of the airplane. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 21: Air conditioning. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

Three cases of in-flight loss of cabin 

pressurization have been reported, resulting 

from failure of a bulkhead check valve in 

combination with failure of an air supply 

duct. 

In addition to mandating inspection, 

rework and/or replacement of the air supply 

ducts, Airworthiness Directive (AD) CF– 

2003–05 (subsequently revised to CF–2003– 

05R1) [which corresponds to FAA AD 2004– 

22–08] mandated the incorporation of a 4 000 

flight-hour repetitive inspection task for 

bulkhead check valves, Part Numbers (P/N) 

92E20–3 and 92E20–4, into the approved 

maintenance schedule. However, this 

repetitive inspection task has since been 

superseded by a 3000 flight-hour periodic 

discard task for these bulkhead check valves. 

This directive mandates revision of the 

approved maintenance schedule to 

incorporate the discard task for bulkhead 

check valves, P/N 92E20–3 and 92E20–4, and 

supersedes the instructions in Corrective 

Actions, Part A, of AD CF–2003–05R1, dated 

7 February 2006. 

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. 

Restatement of Requirements of AD 2004– 

22–08, Amendment 39–13836: 

Service Information Clarifications 

(g) Paragraphs (g)(1), (g)(2), and (g)(3) of 

this AD pertain to the service information 

referenced in this AD. 

(1) Although Bombardier Alert Service 

Bulletin A601R–21–053, Revision ‘A,’ dated 

January 28, 2003; and Bombardier Alert 

Service Bulletin A601R–21–054, dated 

November 8, 2001; specify to submit certain 

information to the manufacturer, this AD 

does not include such a requirement. 

(2) Bombardier Alert Service Bulletin 

A601R–21–054, dated November 8, 2001, 

recommends sending all damaged check 

valves to the manufacturer for analysis; 

however, this AD does not include that 

requirement. 

(3) Accomplishment of the actions 

specified in Bombardier Alert Service 

Bulletin A601R–21–053, dated November 8, 

2001, before December 2, 2004 (the effective 

date of AD 2004–22–08), is considered 

acceptable for compliance with the 

applicable actions specified in this AD. 

Repetitive Inspections/Related Corrective 

Actions 

(h) Within 500 flight hours after December 

2, 2004: Do the detailed inspections and 

related corrective actions required by 

paragraphs (h)(1) and (h)(2) of this AD, per 

the Accomplishment Instructions of 

Bombardier Alert Service Bulletin A601R– 

21–053, Revision ‘A,’ dated January 28, 2003; 

and Bombardier Alert Service Bulletin 

A601R–21–054, dated November 8, 2001; as 

applicable. 

(1) For airplanes having bulkhead check 

valves with part number (P/N) 92E20–3/–4, 

as identified in Bombardier Alert Service 

Bulletin A601R–21–054, dated November 8, 

2001: Inspect the left- and right-hand 

bulkhead check valves for damage (cracking, 

breakage). If any damage is found, before 

further flight, replace the damaged valve. 

Repeat the inspection at intervals not to 

exceed 4,000 flight hours until the 

replacement required by paragraph (j) of this 

AD is done. 

(2) For airplanes having serial numbers 

7003 through 7067 inclusive, and 7069 

through 7477 inclusive: Inspect the left- and 

right-hand air supply ducts of the rear 

bulkhead for damage (tearing, delamination, 

or cracking). If any damage is found, before 

further flight, either rework or replace the 

damaged air supply duct, which ends the 

inspections for that air supply duct only. If 

no damage is found, repeat the inspection 

thereafter at intervals not to exceed 500 flight 

hours until accomplishment of paragraph (i) 

of this AD. 

Note 2: For the purposes of this AD, a 

detailed inspection is defined as: ‘‘An 

intensive visual examination of a specific 

structural area, system, installation, or 

assembly to detect damage, failure, or 

irregularity. Available lighting is normally 

supplemented with a direct source of good 

lighting at intensity deemed appropriate by 

the inspector. Inspection aids such as mirror, 


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magnifying lenses, etc., may be used. Surface 

cleaning and elaborate access procedures 

may be required.’’ 

Terminating Action for Repetitive 

Inspections of Air Supply Ducts 

(i) Except as required by paragraph (h)(2) 

of this AD, for airplanes having serial 

numbers 7003 through 7067 inclusive, and 

7069 through 7477 inclusive: Within 5,000 

flight hours after December 2, 2004, either 

rework or replace the left- and right-hand air 

ducts, as applicable, per the Accomplishment 

Instructions of Bombardier Alert Service 

Bulletin A601R–21–053, Revision ‘A,’ dated 

January 28, 2003; and Bombardier Alert 

Service Bulletin A601R–21–054, dated 

November 8, 2001; as applicable. 

Accomplishment of this paragraph ends the 

repetitive inspections required by paragraph 

(h)(2) of this AD. 

New Requirements of This AD: 

Actions and Compliance 

(j) For airplanes having serial numbers 

7003 and subsequent: Within 60 days after 

the effective date of this AD, revise the 

Airworthiness Limitations section of the 

Instructions for Continued Airworthiness to 

include the information in Bombardier 

Temporary Revision (TR) 1–2–39, dated 

December 12, 2008, to Section 2—Systems 

and Powerplant Program, of Part 1 of the 

Bombardier CL–600–2B19 Maintenance 

Requirement Manual (MRM). This task 

requires replacement of the bulkhead check 

valves having P/N 92E20–3 or 92E20–4 at 

intervals not to exceed 3,000 flight hours. 

Operate the airplane thereafter according to 

the limitations and procedures in the TR. 

(k) Thereafter, except as provided in 

paragraph (j) of this AD, no alternative 

replacement times or structural inspection 

intervals may be approved for this bulkhead 

check valve. 

Note 3: The actions required by paragraph 

(j) of this AD may be done by inserting a copy 

of Bombardier TR 1–2–39, dated December 

12, 2008, into the MRM, which introduces 

Task 21–51–21–13. When Bombardier Task 

21–51–21–13 has been included in general 

revisions of the MRM, the general revisions 

may be inserted into Part 2 of the 

Airworthiness Limitations section of the 

MRM, provided the relevant information in 

the general revision is identical to that in the 

TR. 

FAA AD Differences 

Note 4: This AD differs from the MCAI 

and/or service information as follows: No 

differences. 

Other FAA AD Provisions 

(l) 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 

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. Two AMOCs 

approved previously in accordance with AD 

2004–22–08, Amendment 39–13836, are 

approved as AMOCs for the corresponding 

provisions of this AD. These two approved 

AMOCs are identified in paragraphs (l)(1)(i) 

and (l)(1)(ii) of this AD. All other AMOCs 

approved previously in accordance with AD 

2004–22–08, Amendment 39–13836, are not 

approved as AMOCs with this AD. 

(i) An AMOC approved by the New York 

ACO on November 17, 2004, in response to 

Comair AMOC request memo, dated 

November 10, 2004. 

(ii) An AMOC approved by the New York 

ACO on October 13, 2006, in response to 

Comair AMOC request memo, dated 

September 19, 2006. 

(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 

(m) Refer to MCAI Canadian Airworthiness 

Directive CF–2009–31, dated July 8, 2009; 

and the service information specified in 

Table 1 of this AD for related information. 

TABLE 1—RELATED INFORMATION

Document Revision Date 

Bombardier TR 1–2–39 to Section 2—Systems and Powerplant Program, of Part 1 of the Bombardier CL–600–2B19 MRM.Original ...................... December 12, 2008. 

Bombardier Alert Service Bulletin A601R–21–053 ......................................................................... ‘A’ .............................. January 28, 2003. 

Bombardier Alert Service Bulletin A601R–21–054 ......................................................................... Original ...................... November 8, 2001. 

Material Incorporated by Reference 

(n) You must use the service information 

specified in Table 2 of this AD, as applicable, 

to do the actions required by this AD, unless 

the AD specifies otherwise. 

TABLE 2—MATERIAL INCORPORATED BY REFERENCE

Document Revision Date 

Bombardier Temporary Revision (TR) 1–2–39 to Section 2—Systems and Powerplant Program, 

of Part 1 of the Bombardier CL–600–2B19 Maintenance Requirement Manual (MRM).

Original ...................... December 12, 2008. 

Bombardier Alert Service Bulletin A601R–21–053 ......................................................................... ‘A’ .............................. January 28, 2003. 

Bombardier Alert Service Bulletin A601R–21–054 ......................................................................... Original ...................... November 8, 2001. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

Bombardier TR 1–2–39, dated December 12, 

2008, to Section 2—Systems and Powerplant 

Program, of Part 1 of the Bombardier CL– 

600–2B19 MRM, under 5 U.S.C. 552(a) and 

1 CFR part 51. 

(2) The Director of the Federal Register 

previously approved the incorporation by 

reference of Bombardier Alert Service 

Bulletin A601R–21–053, Revision ‘A,’ dated 

January 28, 2003; and Bombardier Alert 

Service Bulletin A601R–21–054, dated 

November 8, 2001; on December 2, 2004 (69 

FR 62807, October 28, 2004). 

(3) 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; e-mail 


emcdonald on DSK2BSOYB1PROD with RULES
61352 Federal Register / Vol. 75, No. 192 / Tuesday, October 5, 2010 / Rules and Regulations 

thd.crj@aero.bombardier.com; Internet http:// 

www.bombardier.com. 

(4) 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. 

(5) 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 

September 16, 2010. 

Robert D. Breneman, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2010–24256 Filed 10–4–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0553; Directorate 

Identifier 2010–NM–070–AD; Amendment 

39–16448; AD 2010–20–13] 

RIN 2120–AA64 

Airworthiness Directives; McDonnell 

Douglas Corporation Model DC–10–30, 

DC–10–30F, DC–10–30F (KC–10A and 

KDC–10), DC–10–40, DC–10–40F, and 

MD–10–30F Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Model DC–10–30, DC–10–30F, DC–10– 

30F (KC–10A and KDC–10), DC–10–40, 

DC–10–40F, and MD–10–30F airplanes. 

This AD requires doing a one-time 

inspection of the wire bundles to 

determine if wires touch the upper 

surface of the center upper auxiliary 

fuel tank, and marking the location if 

necessary; a one-time inspection for 

splices and damage of all wire bundles 

routed above the center upper auxiliary 

fuel tank; a one-time inspection for 

damage to the fuel vapor barrier seal 

and upper surface of the center upper 

auxiliary fuel tank; and corrective 

actions, if necessary. This AD also 

requires installing non-metallic barrier/ 

shield sleeving to the wire harnesses, 

new clamps, new attaching hardware, 

and new extruded channels. This AD 

was prompted by fuel system reviews 

conducted by the manufacturer. We are 

issuing this AD to reduce the potential 

of ignition sources inside fuel tanks, 

which, in combination with flammable 

fuel vapors, could result in fuel tank 

explosions and consequent loss of the 

airplane. 

DATES: This AD is effective November 9, 

2010. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of November 9, 2010. 

ADDRESSES: For service information 

identified in this AD, contact Boeing 

Commercial Airplanes, Attention: Data 

& Services Management, 3855 

Lakewood Boulevard, MC D800–0019, 

Long Beach, California 90846–0001; 

telephone 206–544–5000, extension 2; 

fax 206–766–5683; e-mail 

dse.boecom@boeing.com; Internet 

https://www.myboeingfleet.com. You 

may review copies of the referenced 

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. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; 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 AD, the regulatory 

evaluation, any comments received, and 

other information. The address for the 

Docket Office (phone: 800–647–5527) is 

Document Management Facility, U.S. 

Department of Transportation, Docket 

Operations, M–30, West Building 

Ground Floor, Room W12–140, 1200 

New Jersey Avenue, SE., Washington, 

DC 20590. 

FOR FURTHER INFORMATION CONTACT: 

Samuel Lee, Aerospace Engineer, 

Propulsion Branch, ANM–140L, FAA, 

Los Angeles Aircraft Certification 

Office, 3960 Paramount Boulevard, 

Lakewood, California 90712–4137; 

telephone (562) 627–5262; fax (562) 

627–5210. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an airworthiness 

directive (AD) that would apply to 

certain Model DC–10–30, DC–10–30F, 

DC–10–30F (KC–10A and KDC–10), DC– 

10–40, DC–10–40F, and MD–10–30F 

airplanes. That NPRM was published in 

the Federal Register on June 28, 2010 

(75 FR 36579). That NPRM proposed to 

require doing a one-time inspection of 

the wire bundles to determine if wires 

touch the upper surface of the center 

upper auxiliary fuel tank, and marking 

the location if necessary; a one-time 

inspection for splices and damage of all 

wire bundles routed above the center 

upper auxiliary fuel tank; a one-time 

inspection for damage to the fuel vapor 

barrier seal and upper surface of the 

center upper auxiliary fuel tank; and 

corrective actions, if necessary. That 

NPRM also proposed to require 

installing non-metallic barrier/shield 

sleeving to the wire harnesses, new 

clamps, new attaching hardware, and 

new extruded channels. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

have considered the comment received. 

FedEx supports the NPRM. 

Conclusion 

We reviewed the relevant data, 

considered the comment received, and 

determined that air safety and the 

public interest require adopting the AD 

as proposed. 

Costs of Compliance 

We estimate that this AD affects 166 

airplanes of U.S. registry. 

We estimate the following costs to 

comply with this AD: 

TABLE—ESTIMATED COSTS

Inspection and installation Work 

hours 

Average 

labor rate 

per hour 

Parts Cost per 

product 

Number of 

U.S.- 

registered 

airplanes 

Fleet cost 

Group 1 Inspection .......................................................... 16 $85 $0 $1,360 75 $102,000 

Group 1 Installation .......................................................... 200 85 13,309 30,309 75 2,273,175 

Group 2 Inspection .......................................................... 16 85 0 1,360 58 78,880 


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