This section of the FEDERAL REGISTER

contains notices to the public of the proposed

issuance of rules and regulations. The

purpose of these notices is to give interested

persons an opportunity to participate in the

rule making prior to the adoption of the final

rules.

Proposed Rules Federal Register

36948 

Vol. 77, No. 119 

Wednesday, June 20, 2012 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–0639; Directorate 

Identifier 2012–NM–005–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 all 

Bombardier, Inc. Model CL–600–2B19 

(Regional Jet Series 100 & 440) 

airplanes. This proposed AD was 

prompted by a report that the safe life 

limit and inspection requirements for 

the horizontal stabilizer trim actuator 

(HSTA) attachment pins and trunnions 

were not listed in the Airworthiness 

Limitations Section of the maintenance 

program. This proposed AD would 

require inspecting the trunnions and 

upper and lower pins for gouges, 

scratches, and corrosion, and replacing 

if necessary; and adding serial numbers 

and new part numbers to certain 

trunnions, and upper and lower pins. 

This proposed AD would also require 

revising the maintenance program to 

incorporate the information specified in 

certain temporary revisions of the 

limitations section. We are proposing 

this AD to detect and correct cracking, 

gouges, scratches, and corrosion of the 

HSTA attachment pins and trunnions, 

which could result in failure of these 

pins and trunnions and consequent 

disconnection of the horizontal 

stabilizer and subsequent loss of 

controllability of the airplane. 

DATES: We must receive comments on 

this proposed AD by August 6, 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., 400 Coˆte-Vertu 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. 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–2012–0639; Directorate Identifier 

2012–NM–005–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–2011–45, 

dated December 19, 2011 (referred to 

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

unsafe condition for the specified 

products. The MCAI states: 

During a review of the Horizontal 

Stabilizer Trim Actuator (HSTA) system, it 

was discovered that the safe life limits and 

the inspection requirements for the HSTA 

attachment pins and trunnions were not 

listed in the Airworthiness Limitations 

Section of the Instructions for Continued 

Airworthiness. Also, the HSTA attachment 

pins and trunnions were not serialized 

making it impossible to keep accurate records 

of the life of these parts. Failure of these pins 

and trunnions will lead to a disconnect of the 

horizontal stabilizer and subsequent loss of 

the aeroplane. 

This [TCCA] Airworthiness Directive (AD) 

mandates the serialization of the HSTA 

attachment pins and trunnions. 

The required actions include a 

detailed inspection of the trunnions and 

upper and lower pins for gouges, 

scratches, and corrosion, and replacing 

if necessary; and adding serial numbers 

and new part numbers to certain 

trunnions, and upper and lower pins. 

This proposed AD would also require 

revising the maintenance program to 

incorporate the information specified in 

certain temporary revisions of the 

limitations section. You may obtain 

further information by examining the 

MCAI in the AD docket. 

Relevant Service Information 

Bombardier, Inc. has issued the 

following service information. The 

actions described in this service 

information are intended to correct the 

unsafe condition identified in the 

MCAI. 


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Federal Register / Vol. 77, No. 119 / Wednesday, June 20, 2012 / Proposed Rules 36949 

• Bombardier Service Bulletin 601R– 

27–160, dated September 29, 2011. 

• Bombardier Temporary Revision 

2B–2180, dated August 8, 2011, to 

Appendix B—Airworthiness 

Limitations, of Part 2, Airworthiness 

Requirements, of the Bombardier CL– 

600–2B19 Maintenance Requirements 

Manual. 

• Bombardier Temporary Revision 

2B–2186, dated August 8, 2011, to 

Appendix B—Airworthiness 

Limitations, of Part 2, Airworthiness 

Requirements, of the Bombardier CL– 

600–2B19 Maintenance Requirements 

Manual. 

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 

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. 

Costs of Compliance 

Based on the service information, we 

estimate that this proposed AD would 

affect about 586 products of U.S. 

registry. We also estimate that it would 

take about 20 work-hours per product to 

comply with the basic requirements of 

this proposed AD. The average labor 

rate is $85 per work-hour. Required 

parts would cost about $162 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 the 

proposed AD on U.S. operators to be 

$1,091,132, or $1,862 per product. 

In addition, we estimate that any 

necessary follow-on actions would take 

about 20 work-hours and require parts 

costing $4,391, for a cost of $6,091 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: 

Bombardier, Inc.: Docket No. FAA–2012– 

0639; Directorate Identifier 2012–NM– 

005–AD. 

(a) Comments Due Date 

We must receive comments by August 6, 

2012. 

(b) Affected ADs 

None. 

(c) Applicability 

(1) This AD applies to Bombardier, Inc. 

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

& 440) airplanes, certificated in any category, 

all serial numbers. 

(2) This AD requires revisions to certain 

operator maintenance documents to include 

new actions (e.g., inspections) and/or Critical 

Design Configuration Control Limitations 

(CDCCLs). Compliance with these actions 

and/or CDCCLs is required by 14 CFR 

91.403(c). For airplanes that have been 

previously modified, altered, or repaired in 

the areas addressed by this AD, the operator 

may not be able to accomplish the actions 

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)(1) of this AD. The request 

should include a description of changes to 

the required actions that will ensure the 

continued operational safety of the airplane. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 27: Flight controls. 

(e) Reason 

This AD was prompted by a report that the 

safe life limit and inspection requirements 

for the horizontal stabilizer trim actuator 

(HSTA) attachment pins and trunnions were 

not listed in the Airworthiness Limitations 

Section of the maintenance program. We are 

issuing this AD to detect and correct 

cracking, gouges, scratches, and corrosion of 

the HSTA attachment pins and trunnions, 

which could result in failure of these pins 

and trunnions and consequent disconnection 

of the horizontal stabilizer and subsequent 

loss of controllability of the airplane. 

(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) Inspection 

At the earliest of the times specified in 

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

Do a detailed inspection of the trunnions, 

upper pins, and lower pins identified in table 

1 of this AD, for gouges, scratches, and 

corrosion, in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 601R–27–160, dated 

September 29, 2011. 

(1) Within 5,000 flight hours after the 

effective date of this AD. 

(2) Within 60 months after the effective 

date of this AD. 

(3) Before the accumulation of 40,000 total 

flight cycles, or within 60 days after the 

effective date of this AD, whichever occurs 

later. 


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36950 Federal Register / Vol. 77, No. 119 / Wednesday, June 20, 2012 / Proposed Rules 

TABLE 1—AFFECTED PARTS

Part name Part No. 

Upper Pin ........................ 600–92384–5 

Upper Pin ........................ 600–92384–7 

Upper Pin ........................ 601R92310–1 

Lower Pin ........................ 600–92383–5 

Lower Pin ........................ 600–92383–7 

Lower Pin ........................ 601R92309–1 

Trunnion .......................... 601R92386–1 

(h) Replacement 

If, during any inspection required by 

paragraph (g) of this AD, any gouges, 

scratches, or corrosion are found: Before 

further flight, replace the affected part with 

a part other than one identified in table 1 of 

this AD, in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 601R–27–160, dated 

September 29, 2011. 

(i) Re-Identification 

If, during any inspection required by 

paragraph (g) of this AD, no gouges, scratches 

or corrosion are found: Before further flight, 

add serial numbers and new part numbers to 

the trunnions, upper pins, and lower pins, in 

accordance with the Accomplishment 

Instructions of Bombardier Service Bulletin 

601R–27–160, dated September 29, 2011. 

(j) Revise Maintenance Program 

Within 30 days after the effective date of 

this AD, revise the maintenance program to 

incorporate the information specified in 

Bombardier Temporary Revisions 2B–2180, 

dated August 8, 2011; and 2B–2186, dated 

August 8, 2011; to Appendix B— 

Airworthiness Limitations, of Part 2, 

Airworthiness Requirements, of the 

Bombardier CL–600–2B19 Maintenance 

Requirements Manual (MRM). The 

compliance time for doing the initial 

replacement for the HSTA trunnion support 

and attaching hardware is before the 

accumulation of 80,000 landings or within 60 

days after the effective date of this AD, 

whichever occurs later. The compliance time 

for doing the initial inspection of the upper 

and lower installation pins of the horizontal 

stabilizer pitch trim actuator is before the 

accumulation of 40,000 landings or within 60 

days after the effective date of this AD, 

whichever occurs later. 

(k) No Alternative Actions or Intervals 

After accomplishing the revision required 

by paragraph (j) of this AD, no alternative 

actions (e.g., inspections) or intervals may be 

used unless the actions or intervals are 

approved as an alternative method of 

compliance (AMOC) in accordance with the 

procedures specified in paragraph (l)(1) of 

this AD. 

(l) 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, 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. 

(m) Related Information 

(1) Refer to MCAI Canadian Airworthiness 

Directive CF–2011–45, dated December 19, 

2011, and the service information specified 

in paragraphs (m)(1)(i), (m)(1)(ii), and 

(m)(1)(iii) of this AD, for related information. 

(i) Bombardier Service Bulletin 601R–27– 

160, dated September 29, 2011. 

(ii) Bombardier Temporary Revision 2B– 

2180, dated August 8, 2011, to Appendix B— 

Airworthiness Limitations, of Part 2, 

Airworthiness Requirements, of the 

Bombardier CL–600–2B19 Maintenance 

Requirements Manual. 

(iii) Bombardier Temporary Revision 2B– 

2186, dated August 8, 2011, to Appendix B— 

Airworthiness Limitations, of Part 2, 

Airworthiness Requirements, of the 

Bombardier CL–600–2B19 Maintenance 

Requirements Manual. 

(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. 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. 

Issued in Renton, Washington, on June 11, 

2012. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2012–15063 Filed 6–19–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–0222; Directorate 

Identifier 2010–NM–056–AD] 

RIN 2120–AA64 

Airworthiness Directives; Dassault 

Aviation Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Proposed rule; withdrawal. 

SUMMARY: The FAA withdraws a notice 

of proposed rulemaking (NPRM) that 

proposed a new airworthiness directive 

(AD) for certain Dassault Aviation 

Model FALCON 7X airplanes. The 

proposed AD would have required 

revising the maintenance program to 

incorporate a limitation that reduced 

time between overhauls, and required 

an initial overhaul, of the direct current 

(DC) generator (bearings). Since the 

proposed AD was issued, we have 

received new data that confirm the 

identified unsafe condition is not 

sufficient to warrant issuance of an AD. 

Accordingly, the proposed AD is 

withdrawn. 

ADDRESSES: 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 action, the 

regulatory evaluation, any comments 

received, and other information. The 

address for the Docket Office (telephone 

800–647–5527) is the 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: 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: 

Discussion 

We proposed to amend part 39 of the 

Federal Aviation Regulations (14 CFR 

part 39) with a notice of proposed 

rulemaking (NPRM) for a new AD for 

certain Dassault Aviation Model 

FALCON 7X airplanes. That NPRM was 

published in the Federal Register on 

March 15, 2011 (76 FR 13924). That 


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