16430 Federal Register / Vol. 77, No. 55 / Wednesday, March 21, 2012 / Rules and Regulations 

(a) Effective Date 

This airworthiness directive (AD) becomes 

effective April 25, 2012. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Bombardier, Inc. Model 

DHC–8–400, –401, and –402 airplanes; 

certificated in any category; serial numbers 

4161 through 4296 inclusive. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 53: Fuselage. 

(e) Reason 

This AD was prompted by reports of 

difficulties in opening the airstair door. We 

are issuing this AD to detect and correct 

drain paths blocked by sealant, resulting in 

an airstair door that is unable to be opened, 

which could hinder evacuation in the event 

of an emergency. 

(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 

Within 600 flight hours after the effective 

date of this AD, do a general visual 

inspection of the structure and gearbox drain 

paths for blockages by sealant, in accordance 

with the Accomplishment Instructions of 

Bombardier Service Bulletin 84–53–48, dated 

December 2, 2010. If any blockages are found, 

before further flight, remove blockages, in 

accordance with the Accomplishment 

Instructions of Bombardier Service Bulletin 

84–53–48, dated December 2, 2010. 

(h) 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. 

(i) Related Information 

Refer to MCAI Canadian Airworthiness 

Directive CF–2011–06, dated April 26, 2011; 

and Bombardier Service Bulletin 84–53–48, 

dated December 2, 2010; for related 

information. 

(j) 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 84–53–48, 

dated December 2, 2010. 

(2) For service information identified in 

this AD, contact Bombardier, Inc., Q–Series 

Technical Help Desk, 123 Garratt Boulevard, 

Toronto, Ontario M3K 1Y5, Canada; 

telephone 416–375–4000; fax 416–375–4539; 

email thd.qseries@aero.bombardier.com; 

Internet http://www.bombardier.com. 

(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 March 9, 

2012. 

Ali Bahrami 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2012–6531 Filed 3–20–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–1324; Directorate 

Identifier 2011–NM–104–AD; Amendment 

39–16983; AD 2012–06–02] 

RIN 2120–AA64 

Airworthiness Directives; Airbus 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for all 

Airbus Model A300 B4–600, B4–600R, 

and F4–600R series airplanes, and 

Model C4–605R Variant F airplanes 

(collectively called A300–600 series 

airplanes), and Model A310 series 

airplanes. This AD was prompted by a 

report of a crack in the selector valve 

pipe of the forward cargo door located 

in the avionics bay opposite the line 

replaceable unit racking. This AD 

requires replacing a certain aluminum 

high pressure pipe with a new corrosion 

resistant stainless steel pipe. We are 

issuing this AD to prevent cracking in 

the selector valve pipe of the forward 

cargo door which could impact the 90 

VU avionics line replaceable unit, and 

could result in multiple computer 

failures, affecting flight safety. 

DATES: This AD becomes effective April 

25, 2012. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of April 25, 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: Dan 

Rodina, Aerospace Engineer, 

International Branch, ANM–116, 

Transport Airplane Directorate, FAA, 

1601 Lind Avenue SW., Renton, 

Washington 98057–3356; telephone 

(425) 227–2125; fax (425) 227–1149. 

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 22, 2011 (76 FR 

79558). That NPRM proposed to require 

replacing a certain aluminum high 

pressure pipe with a new corrosion 

resistant stainless steel pipe. The MCAI 

states: 

An A300–600 operator has reported a 

hydraulic leak at the forward cargo door area. 

After further investigation, the forward cargo 

door selector valve pipe Part Number (P/N) 

A5231006100300, located in the avionics bay 

opposite to Line Replaceable Unit (LRU) 

racking, was found cracked. 

This condition, if not detected and 

corrected, can impact the 90 VU avionics 

LRU, which could result in multiple 

computer failures, affecting flight safety. 

For the reasons described above, this AD 

requires the replacement of the aluminum 

pipe P/N A5231006100300 with a stainless 

steel pipe P/N A5231007000600. 

This [EASA] AD has been corrected to 

make clear that the use of Airbus SB A310– 


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Federal Register / Vol. 77, No. 55 / Wednesday, March 21, 2012 / Rules and Regulations 16431 

52–2067 and Airbus SB [service bulletin] 

A300–52–6065 at original issue is acceptable 

to comply with paragraph (1) of this [EASA] 

AD, unless, inadvertently, the high pressure 

pipe P/N A5231007000600 has been replaced 

in service, after original issue of the SB’s 

accomplishment, with P/N A5231006100300. 

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 79558, December 22, 2011) or on the 

determination of the cost to the public. 

Changes to AD 

We have clarified that the models 

affected by Airbus Mandatory Service 

Bulletin A300–52–6065, Revision 01, 

dated July 5, 2010, are Model A300–600 

series airplanes. We have changed 

paragraph (g) of this AD accordingly. 

We have revised the heading for and 

the wording in paragraph (j) of this AD; 

this change has not changed the intent 

of that paragraph. 

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 and/or the changes described 

previously. We have determined that 

these minor changes: 

• Are consistent with the intent that 

was proposed in the NPRM (76 FR 

79558, December 22, 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 79558, 

December 22, 2011). 

Costs of Compliance 

We estimate that this AD will affect 

152 products of U.S. registry. We also 

estimate that it will take about 4 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 $51,680, or 

$340 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. 

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 79558, 

December 22, 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: 

2012–06–02 Airbus: Amendment 39–16983. 

Docket No. FAA–2012–1324; Directorate 

Identifier 2011–NM–104–AD. 

(a) Effective Date 

This airworthiness directive (AD) becomes 

effective April 25, 2012. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Airbus Model A300 B4– 

601, B4–603, B4–620, B4–622, B4–605R, B4– 

622R, F4–605R, F4–622R, and C4–605R 

Variant F airplanes; and Model A310–203, 

–204, –221, –222, –304, –322, –324, and –325 

airplanes; certificated in any category; all 

certificated models, all manufacturer serial 

numbers. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 52: Doors. 

(e) Reason 

This AD was prompted by a report of a 

crack in the selector valve pipe of the 

forward cargo door located in the avionics 

bay opposite the line replaceable unit 

racking. We are issuing this AD to prevent 

cracking in the selector valve pipe of the 

forward cargo door which could impact the 

90 VU avionics line replaceable unit, and 

could result in multiple computer failures, 

affecting flight safety. 

(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) Replacement 

Except as provided by paragraph (h) of this 

AD: Within 30 months or 6,000 flight hours 

after the effective date of this AD, whichever 

occurs first, replace the aluminum high 

pressure pipe having part number (P/N) 

A5231006100300 with a new pipe made of 

corrosion resistant stainless steel and having 

P/N A5231007000600, in accordance with 

the Accomplishment Instructions of Airbus 


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16432 Federal Register / Vol. 77, No. 55 / Wednesday, March 21, 2012 / Rules and Regulations 

Mandatory Service Bulletin A300–52–6065, 

Revision 01, dated July 5, 2010 (for Model 

A300–600 series airplanes); or A310–52– 

2067, Revision 01, dated July 5, 2010 (for 

Model A310 series airplanes). 

(h) Exception 

Any airplane that has incorporated Airbus 

Modification 12464 in production has the 

new P/N A5231007000600 installed and is 

therefore compliant with the requirements of 

paragraph (g) of this AD. If the high pressure 

pipe has been replaced with P/N 

A5231006100300 in service after delivery of 

the airplane, replace the high pressure pipe 

in accordance with paragraph (g) of this AD 

within the times specified in paragraph (g) of 

this AD. 

(i) Parts Installation 

As of the effective date of this AD, no 

person may install an aluminum high 

pressure pipe having P/N A5231006100300, 

on any airplane. 

(j) Credit for Previous Actions 

This paragraph gives credit for the 

replacement required by paragraph (g) of this 

AD, if the replacement was done before the 

effective date of this AD using Airbus Service 

Bulletin A300–52–6065, dated July 9, 2002 

(for Model A300–600 series airplanes); or 

A310–52–2067, dated July 9, 2002 (for Model 

A310 series airplanes). 

(k) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, International 

Branch, ANM–116, Transport Airplane 

Directorate, 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 International Branch, send it to ATTN: 

Dan Rodina, Aerospace Engineer, 

International Branch, ANM–116, Transport 

Airplane Directorate, FAA, 1601 Lind 

Avenue SW., Renton, Washington 98057– 

3356; telephone (425) 227–2125; fax (425) 

227–1149. Information may be emailed to: 

9-ANM-116-AMOC-REQUESTS@faa.gov. 

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. 

(l) Related Information 

Refer to MCAI European Aviation Safety 

Agency (EASA) Airworthiness Directive 

2011–0085, dated May 12, 2011 (corrected 

May 31, 2011); Airbus Mandatory Service 

Bulletin A300–52–6065, Revision 01, dated 

July 5, 2010; and Airbus Mandatory Service 

Bulletin A310–52–2067, Revision 01, dated 

July 5, 2010; for related information. 

(m) 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) Airbus Mandatory Service Bulletin 

A300–52–6065, Revision 01, dated July 5, 

2010. 

(ii) Airbus Mandatory Service Bulletin 

A310–52–2067, Revision 01, dated July 5, 

2010. 

(2) For service information identified in 

this AD, contact Airbus SAS–EAW 

(Airworthiness Office), 1 Rond Point Maurice 

Bellonte, 31707 Blagnac Cedex, France; 

telephone +33 5 61 93 36 96; fax +33 5 61 

93 44 51; email: account.airwortheas@airbus.com; Internet http:// 

www.airbus.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 March 8, 

2012. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2012–6520 Filed 3–20–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–1414; Directorate 

Identifier 2011–NM–227–AD; Amendment 

39–16982; AD 2012–06–01] 

RIN 2120–AA64 

Airworthiness Directives; Cessna 

Aircraft Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Cessna Aircraft Company Model 560XL 

airplanes. This AD was prompted by 

reports of jammed or stiff rudder control 

due to water freezing on the rudder bias 

cables and pulleys of the stinger. This 

AD requires modification of the drain 

installation of the tailcone stinger on the 

aft canted bulkhead, inspections for 

drain holes in the forward and aft 

frames, and modification of the drain 

holes. We are issuing this AD to prevent 

ice accumulation on the cables and 

pulleys of the stinger, which could 

result in jamming of the rudder and 

consequent reduced controllability of 

the airplane. 

DATES: This AD is effective April 25, 

2012. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in the AD 

as of April 25, 2012. 

ADDRESSES: For service information 

identified in this AD, contact Cessna 

Aircraft Co., P.O. Box 7706, Wichita, 

Kansas 67277; telephone 316–517–6215; 

fax 316–517–5802; email 

citationpubs@cessna.textron.com; 

Internet https:// 

www.cessnasupport.com/newlogin.html. 

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: 

David Fairback, Aerospace Engineer, 

Mechanical Systems and Propulsion 

Branch, ACE–116W, FAA, Wichita 

Aircraft Certification Office (ACO), 1801 

Airport Road, Room 100, Mid-Continent 

Airport, Wichita, Kansas 67209; phone: 

(316) 946–4154; fax: (316) 946–4107; 

email: david.fairback@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an AD that would 


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