9520 Federal Register / Vol. 77, No. 33 / Friday, February 17, 2012 / Rules and Regulations 

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/ 

cfr/ibr-locations.html. 

Issued in Renton, Washington, on January 

26, 2012. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2012–2973 Filed 2–16–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–1092; Directorate 

Identifier 2011–NM–111–AD; Amendment 

39–16946; AD 2012–03–05] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier 

Inc., Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Bombardier, Inc. Model BD–700–1A10 

and BD–700–1A11 airplanes. This AD 

was prompted by a report of 

deformation at the neck of the pressure 

regulator body on certain oxygen 

cylinder and regulator assemblies 

(CRA). This AD requires an inspection 

to determine if a certain oxygen CRA is 

installed and the replacement of oxygen 

CRAs containing pressure regulators 

having a certain part number. We are 

issuing this AD to prevent elongation of 

the pressure regulator neck, which 

could result in rupture of the oxygen 

cylinder, and in the case of cabin 

depressurization, oxygen not being 

available when required. 

DATES: This AD becomes effective 

March 23, 2012. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of March 23, 2012. 

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: 

Cesar Gomez, 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– 

7318; 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 October 26, 2011 (76 FR 

66198). The MCAI states: 

During a routine inspection, deformation 

was found at the neck of the pressure 

regulator body on the oxygen Cylinder and 

Regulator Assemblies (CRA). 

An investigation by the vendor, Avox 

Systems Inc., revealed that the deformation 

was attributed to two (2) batches of raw 

material that did not meet the required 

tensile strength. This may cause elongation of 

the pressure regulator neck, which could 

result in rupture of the oxygen cylinder, and 

in the case of cabin depressurization, oxygen 

not being available when required. 

This [Canadian] directive mandates [an 

inspection to determine if a certain oxygen 

CRA is installed and] the replacement of 

oxygen CRAs containing pressure regulators, 

part number (P/N) 806370–06, that do not 

meet the required material properties. 

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 (76 

FR 66198, October 26, 2011), 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 except for minor editorial 

changes. We have determined that these 

minor changes: 

• Are consistent with the intent that 

was proposed in the NPRM (76 FR 

66198, October 26, 2011), for correcting 

the unsafe condition; and 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM (76 FR 66198, 

October 26, 2011). 

Costs of Compliance 

We estimate that this AD will affect 

39 products of U.S. registry. We also 

estimate that it will take about 10 workhours per product to comply with the 

basic requirements of this AD. The 

average labor rate is $85 per work-hour. 

Required parts will cost about $0 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 $33,150, or 

$850 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 that 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); 

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 AD and placed it in the AD docket. 

mstockstill on DSK4VPTVN1PROD with RULES

Federal Register / Vol. 77, No. 33 / Friday, February 17, 2012 / Rules and Regulations 9521 

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 (76 FR 66198, 

October 26, 2011), 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: 

2012–03–05 Bombardier, Inc.: Amendment 

39–16946. Docket No. FAA–2011–1092; 

Directorate Identifier 2011–NM–111–AD. 

(a) Effective Date 

This airworthiness directive (AD) becomes 

effective March 23, 2012. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Bombardier, Inc. Model 

BD–700–1A10 and BD–700–1A11 airplanes, 

certificated in any category, serial numbers 

(S/N) 9002 through 9126 inclusive, 9128 

through 9312 inclusive, 9314 through 9322 

inclusive, 9324 through 9335 inclusive, 9337, 

9338, 9340, 9341, 9343, 9344, 9346, 9347, 

9350, 9353, 9355, 9356, 9358, 9361, 9365, 

9372, 9374, 9384, 9402, 9403, and 

subsequent. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 35: Oxygen. 

(e) Reason 

This AD was prompted by a report of 

deformation at the neck of the pressure 

regulator body on certain oxygen cylinder 

and regulator assemblies (CRA). We are 

issuing this AD to prevent elongation of the 

pressure regulator neck, which could result 

in rupture of the oxygen cylinder, and in the 

case of cabin depressurization, oxygen not 

being available when required. 

(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) Actions 

For airplanes having S/N 9002 through 

9126 inclusive, 9128 through 9312 inclusive, 

9314 through 9322 inclusive, 9324 through 

9335 inclusive, 9337, 9338, 9340, 9341, 9343, 

9344, 9346, 9347, 9350, 9353, 9355, 9356, 

9358, 9361, 9365, 9372, 9374, 9384, 9402, 

and 9403: Within 7 months after the effective 

date of this AD, do an inspection of oxygen 

pressure regulators having P/N 806370–06 to 

determine if the serial number is listed in 

Table 2 of the Accomplishment Instructions 

of Bombardier Service Bulletin 700–35–011 

(for Model BD–700–1A10 airplanes) or 700– 

1A11–35–010 (for Model BD–700–1A11 

airplanes), both Revision 01, both dated 

February 1, 2011. 

(1) If the serial number of the pressure 

regulator having P/N 806370–06 is listed in 

Table 2 of the Accomplishment Instructions 

of Bombardier Service Bulletin 700–35–011 

(for Model BD–700–1A10 airplanes) or 700– 

1A11–35–010 (for Model BD–700–1A11 

airplanes), both Revision 01, both dated 

February 1, 2011: Within 7 months after the 

effective date of this AD, replace the affected 

oxygen CRA, in accordance with paragraph 

2.C. of the Accomplishment Instructions of 

Bombardier Service Bulletin 700–35–011 (for 

Model BD–700–1A10 airplanes) or 700– 

1A11–35–010 (for Model BD–700–1A11 

airplanes), both Revision 01, both dated 

February 1, 2011. 

(2) If the serial number of the oxygen 

pressure regulator having P/N 806370–06 is 

not listed in Table 2 of the Accomplishment 

Instructions of Bombardier Service Bulletin 

700–35–011 (for Model BD–700–1A10 

airplanes) or 700–1A11–35–010 (for Model 

BD–700–1A11 airplanes), both Revision 01, 

both dated February 1, 2011: No further 

action is required by this paragraph. 

(h) Parts Installation 

For all airplanes: As of the effective date 

of this AD, no person may install an oxygen 

pressure regulator (P/N 806370–06) having 

any serial number listed in Table 2 of the 

Accomplishment Instructions of Bombardier 

Service Bulletin 700–35–011 (for Model BD– 

700–1A10 airplanes) or 700–1A11–35–010 

(for Model BD–700–1A11 airplanes), both 

Revision 01, both dated February 1, 2011, on 

any airplane, unless a suffix ‘‘–A’’ is beside 

the serial number. 

(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, 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. 

(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 

Refer to MCAI Canadian Airworthiness 

Directive CF–2011–10, dated May 13, 2011, 

and the service bulletins specified in 

paragraphs (j)(1) and (j)(2) of this AD, for 

related information. 

(1) Bombardier Service Bulletin 700–35– 

011, Revision 01, dated February 1, 2011. 

(2) Bombardier Service Bulletin 700– 

1A11–35–010, Revision 01, dated February 1, 

2011. 

(k) Material Incorporated by Reference 

(1) You must use the following service 

information to do the actions required by this 

AD, unless the AD specifies otherwise. The 

Director of the Federal Register approved the 

incorporation by reference (IBR) of the 

following service information under 5 U.S.C. 

552(a) and 1 CFR part 51: 

(i) Bombardier Service Bulletin 700–35– 

011, Revision 01, dated February 1, 2011. 

(ii) Bombardier Service Bulletin 700– 

1A11–35–010, Revision 01, dated February 1, 

2011. 

(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. 

(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 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 Renton, Washington, on January 

26, 2012. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2012–2974 Filed 2–16–12; 8:45 am] 

BILLING CODE 4910–13–P 

mstockstill on DSK4VPTVN1PROD with RULES