16486 Federal Register / Vol. 77, No. 55 / Wednesday, March 21, 2012 / Proposed Rules 

Dated: March 15, 2012. 

Dale L. Aultman, 

Secretary, Farm Credit Administration Board. 

[FR Doc. 2012–6806 Filed 3–20–12; 8:45 am] 

BILLING CODE 6705–01–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–0270; Directorate 

Identifier 2011–NM–113–AD] 

RIN 2120–AA64 

Airworthiness Directives; Fokker 

Services B.V. Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for all 

Fokker Services B.V. Model F.27 Mark 

050 airplanes, and Model F.28 Mark 

0070 and 0100 airplanes. This proposed 

AD was prompted by reports of loose 

nuts on contactors in the electrical 

power center (EPC), and in some cases, 

burned contactors. This proposed AD 

would require inspecting and, if 

necessary, adjusting, the torque values 

of nuts on circuit breakers, contactors 

and terminal blocks of the EPC and 

battery relay panel. This proposed AD 

would also require inspecting to 

determine if certain parts are installed, 

and installing the parts if necessary. We 

are proposing this AD to detect and 

correct loose nuts, which could result in 

arcing and potentially an onboard fire, 

possibly resulting in damage to the 

airplane and injury to occupants or 

maintenance personnel. 

DATES: We must receive comments on 

this proposed AD by May 7, 2012. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov. Follow the 

instructions for submitting comments. 

• Fax: (202) 493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, 

M–30, West Building Ground Floor, 

Room W12–140, 1200 New Jersey 

Avenue SE., Washington, DC 20590. 

• Hand Delivery: U.S. Department of 

Transportation, Docket Operations, 

M–30, West Building Ground Floor, 

Room W12–140, 1200 New Jersey 

Avenue SE., Washington, DC, between 

9 a.m. and 5 p.m., Monday through 

Friday, except Federal holidays. 

For service information identified in 

this proposed AD, contact Fokker 

Services B.V., Technical Services Dept., 

P.O. Box 231, 2150 AE Nieuw-Vennep, 

the Netherlands; telephone +31 (0)252– 

627–350; fax +31 (0)252–627–211; email 

technicalservices.fokkerservices@stork.

com; Internet http://www.myfokker

fleet.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 Operations office between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. The AD docket 

contains this proposed AD, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Operations 

office (telephone (800) 647–5527) is in 

the ADDRESSES section. Comments will 

be available in the AD docket shortly 

after receipt. 

FOR FURTHER INFORMATION CONTACT: Tom 

Rodriguez, Aerospace Engineer, 

International Branch, ANM–116, 

Transport Airplane Directorate, FAA, 

1601 Lind Avenue SW., Renton, 

Washington 98057–3356; telephone 

(425) 227–1137; fax (425) 227–1149. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposed AD. Send your comments 

to an address listed under the 

ADDRESSES section. Include ‘‘Docket No. 

FAA–2012–0270; Directorate Identifier 

2011–NM–113–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this proposed AD. We will 

consider all comments received by the 

closing date and may amend this 

proposed AD based on those comments. 

We will post all comments we 

receive, without change, to http:// 

www.regulations.gov, including any 

personal information you provide. We 

will also post a report summarizing each 

substantive verbal contact we receive 

about this proposed AD. 

Discussion 

The European Aviation Safety Agency 

(EASA), which is the Technical Agent 

for the Member States of the European 

Community, has issued EASA 

Airworthiness Directive 2011–0083, 

dated May 12, 2011 (referred to after 

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

condition for the specified products. 

The MCAI states: 

In December 1989, Fokker issued Service 

Bulletin (SB) SBF50–24–A013 and SBF100– 

24–A011 (both Alert Bulletins) to instruct 

operators to inspect and adjust several torque 

values of bus bars and contactors in the EPC. 

The Civil Aviation Authority of The 

Netherlands (CAA–NL, formerly RLD) issued 

AD (BLA) 89–159 and BLA 89–157 

respectively (both now at issue 2), to require 

operators of the affected aeroplanes to 

comply with the instructions of these SBs. 

Since those ADs were issued, several 

operators have reported finding loose nuts on 

contactors in the EPC of Fokker 50/60 

aeroplanes in post-SBF50–24–A013 

configuration and on Fokker 70/100 

aeroplanes in post-SBF100–24–A011 

configuration. In some cases, the findings 

included damaged (burned) contactors. 

This condition, if not detected and 

corrected, could lead to arcing and, in 

combination with other factors, to an 

onboard fire, possibly resulting in damage to 

the aeroplane and injury to occupants or 

maintenance personnel. 

For the reasons described above, this 

[EASA] AD requires a one-time [torque 

check] inspection and, depending on 

findings, adjustment of the torque values of 

nuts on circuit breakers, contactors and 

terminal blocks [of the EPC and battery relay 

panel]. 

The required actions include doing a 

general visual inspection to determine if 

either the lock washer, flat washer and 

nut, or locking nut and flat washer, are 

installed; and installing a new lock 

washer or self-locking nut, if necessary; 

and applying torque inspection lacquer. 

You may obtain further information by 

examining the MCAI in the AD docket. 

Relevant Service Information 

Fokker Services B.V. has issued 

Fokker Service Bulletins SBF50–24– 

032, including Fokker Manual Change 

Notification—Maintenance 

Documentation MCNM–F50–072 (for 

Model F.27 Mark 050 airplanes), and 

SBF100–24–043, including Fokker 

Manual Change Notification— 

Maintenance Documentation MCNM– 

F100–141 (for Model F.28 Mark 0070 

and 0100 airplanes), both dated 

February 10, 2011. The actions 

described in this service information are 

intended to correct the unsafe condition 

identified in the MCAI. 

FAA’s Determination and Requirements 

of This Proposed AD 

This product has been approved by 

the aviation authority of another 

country, and is approved for operation 

in the United States. Pursuant to our 

bilateral agreement with the State of 

Design Authority, we have been notified 


srobinson on DSK4SPTVN1PROD with PROPOSALS
Federal Register / Vol. 77, No. 55 / Wednesday, March 21, 2012 / Proposed Rules 16487 

of the unsafe condition described in the 

MCAI and service information 

referenced above. We are proposing this 

AD because we evaluated all pertinent 

information and determined an unsafe 

condition exists and is likely to exist or 

develop on other products of the same 

type design. 

Differences Between This AD and the 

MCAI or Service Information 

This AD differs from the MCAI and/ 

or service information as follows: The 

MCAI specifies certain concurrent 

requirements. This AD does not include 

those requirements because the actions 

are already required by FAA AD 98–03– 

18, Amendment 39–10310 (63 FR 6066, 

February 6, 1998); and FAA AD 2009– 

18–05, Amendment 39–16001 (74 FR 

43625, August 27, 2009). 

Costs of Compliance 

Based on the service information, we 

estimate that this proposed AD would 

affect about 6 products of U.S. registry. 

We also estimate that it would take 

about 5 work-hours per product to 

comply with the basic requirements of 

this proposed AD. The average labor 

rate is $85 per work-hour. Based on 

these figures, we estimate the cost of the 

proposed AD on U.S. operators to be 

$2,550, or $425 per product. 

In addition, we estimate that any 

necessary follow-on actions would take 

about 4 work-hours and require parts 

costing $25, for a cost of $365 per 

product. We have no way of 

determining the number of products 

that may need these actions. 

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 proposed AD 

would not have federalism implications 

under Executive Order 13132. This 

proposed AD would 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 proposed regulation: 

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 proposed AD and placed it in the 

AD docket. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 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: 

Fokker Services B.V.: Docket No. FAA– 

2012–0270; Directorate Identifier 2011– 

NM–113–AD. 

(a) Comments Due Date 

We must receive comments by May 7, 

2012. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to all Fokker Services B.V. 

Model F.27 Mark 050 airplanes, and Model 

F.28 Mark 0070 and 0100 airplanes, 

certificated in any category. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 24: Electric power. 

(e) Reason 

This AD was prompted by reports of loose 

nuts on contactors in the electrical power 

center (EPC), and in some cases, burned 

contactors. We are issuing this AD to detect 

and correct loose nuts, which could result in 

arcing and potentially an onboard fire, 

possibly resulting in damage to the airplane 

and injury to occupants or maintenance 

personnel. 

(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 24 months after the effective date 

of this AD, do the actions specified in 

paragraphs (g)(1), (g)(2), and (g)(3) of this AD. 

(1) Do a torque check of the nuts and 

circuit breakers, contactors, and terminal 

blocks of the EPC and battery relay panel, as 

applicable, and do all applicable adjustments 

of the torque values, in accordance with the 

Accomplishment Instructions of Fokker 

Service Bulletin SBF50–24–032, including 

Fokker Manual Change Notification— 

Maintenance Documentation MCNM–F50– 

072 (for Model F.27 Mark 050 airplanes); or 

SBF100–24–043, including Fokker Manual 

Change Notification—Maintenance 

Documentation MCNM–F100–141 (for Model 

F.28 Mark 0070 and 0100 airplanes; both 

dated February 10, 2011. Do all applicable 

adjustments before further flight. 

(2) Do a general visual inspection of the 

contacts and nuts on circuit breakers, 

contactors, and terminal blocks of the 

electrical power center (EPC) and battery 

relay panel to determine if either the lock 

washer, flat washer and nut, or locking nut 

and flat washer are installed, and do all 

applicable installations; in accordance with 

the Accomplishment Instructions of Fokker 

Service Bulletin SBF50–24–032, including 

Fokker Manual Change Notification— 

Maintenance Documentation MCNM–F50– 

072 (for Model F.27 Mark 050 airplanes); or 

SBF100–24–043, including Fokker Manual 

Change Notification—Maintenance 

Documentation MCNM–F100–141 (for Model 

F.28 Mark 0070 and 0100 airplanes; both 

dated February 10, 2011. Do all applicable 

installations before further flight. 

(3) Before further flight after accomplishing 

any check required by paragraph (g)(1) of this 

AD or any inspection required by paragraph 

(g)(2) of this AD: Apply torque inspection 

lacquer, in accordance with the 

Accomplishment Instructions of Fokker 

Service Bulletin SBF50–24–032, including 

Fokker Manual Change Notification— 

Maintenance Documentation MCNM–F50– 

072 (for Model F.27 Mark 050 airplanes); or 

SBF100–24–043, including Fokker Manual 

Change Notification—Maintenance 

Documentation MCNM–F100–141 (for Model 

F.28 Mark 0070 and 0100 airplanes; both 

dated February 10, 2011. 

(h) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, International 


srobinson on DSK4SPTVN1PROD with PROPOSALS
16488 Federal Register / Vol. 77, No. 55 / Wednesday, March 21, 2012 / Proposed Rules 

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: 

Tom Rodriguez, Aerospace Engineer, 

International Branch, ANM–116, Transport 

Airplane Directorate, FAA, 1601 Lind 

Avenue SW., Renton, Washington 98057– 

3356; telephone (425) 227–1137; 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. 

(i) Related Information 

Refer to MCAI EASA Airworthiness 

Directive 2011–0083, dated May 12, 2011, 

and the service information specified in 

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

related information. 

(1) Fokker Service Bulletin SBF50–24–032, 

including Fokker Manual Change 

Notification—Maintenance Documentation 

MCNM–F50–072, dated February 10, 2011. 

(2) Fokker Service Bulletin SBF100–24– 

043, including Fokker Manual Change 

Notification—Maintenance Documentation 

MCNM–F100–141, dated February 10, 2011. 

Issued in Renton, Washington, on March 9, 

2012. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2012–6804 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–2012–0271; Directorate 

Identifier 2011–NM–196–AD] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for certain 

Bombardier, Inc. Model DHC–8–100, 

DHC–8–200, and DHC–8–300 series 

airplanes. This proposed AD was 

prompted by reports of hydraulic 

accumulator screw cap or end cap 

failure. This proposed AD would 

require replacing the affected parking 

brake accumulator. We are proposing 

this AD to prevent failure of the parking 

brake accumulator screw caps or end 

caps, which could result in loss of the 

number 2 hydraulic system and damage 

to airplane structures, and could 

potentially have an adverse effect on the 

controllability of the airplane. 

DATES: We must receive comments on 

this proposed AD by May 7, 2012. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov. Follow the 

instructions for submitting comments. 

• Fax: (202) 493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, 

M–30, West Building Ground Floor, 

Room W12–140, 1200 New Jersey 

Avenue SE., Washington, DC 20590. 

• Hand Delivery: U.S. Department of 

Transportation, Docket Operations, 

M–30, West Building Ground Floor, 

Room W12–140, 1200 New Jersey 

Avenue SE., Washington, DC, between 9 

a.m. and 5 p.m., Monday through 

Friday, except Federal holidays. 

For service information identified in 

this proposed 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. 

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 Operations office between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. The AD docket 

contains this proposed AD, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Operations 

office (telephone (800) 647–5527) is in 

the ADDRESSES section. Comments will 

be available in the AD docket shortly 

after receipt. 

FOR FURTHER INFORMATION CONTACT: 

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: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposed AD. Send your comments 

to an address listed under the 

ADDRESSES section. Include ‘‘Docket No. 

FAA–2012–0271; Directorate Identifier 

2011–NM–196–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this proposed AD. We will 

consider all comments received by the 

closing date and may amend this 

proposed AD based on those comments. 

We will post all comments we 

receive, without change, to http:// 

www.regulations.gov, including any 

personal information you provide. We 

will also post a report summarizing each 

substantive verbal contact we receive 

about this proposed AD. 

Discussion 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued Canadian 

Airworthiness Directive CF–2011–29, 

dated August 2, 2011 (referred to after 

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

condition for the specified products. 

The MCAI states: 

Seven cases of on-ground hydraulic 

accumulator screw cap or end cap failure 

have been experienced on CL–600–2B19 

(CRJ) aeroplanes, resulting in loss of the 

associated hydraulic system and high-energy 

impact damage to adjacent systems and 

structure. To date, the lowest number of 

flight cycles accumulated at the time of 

failure has been 6991. 

Although there have been no failures to 

date on any DHC–8 aeroplanes, similar 

accumulators to those installed on the CL– 

600–2B19, Part Numbers (P/N)0860162001 

and 0860162002 (Parking Brake 

Accumulator), are installed on the aeroplanes 

listed in the Applicability section of this 

[TCCA] directive. 

A detailed analysis of the systems and 

structure in the potential line of trajectory of 

a failed screw cap/end cap for the 

accumulator has been conducted. It has 

identified that the worst-case scenarios 

would be the loss of number 2 hydraulic 

system, and damage to aeroplane structures. 

This [TCCA] directive gives instructions to 

determine the part number and serial number 

of the existing parking brake accumulator, 

and where applicable, replace the 

accumulator. 


srobinson on DSK4SPTVN1PROD with PROPOSALS