Federal Register / Vol. 76, No. 196 / Tuesday, October 11, 2011 / Proposed Rules 62669 

5680; e-mail: me.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. 

Issued in Renton, Washington, on 

September 30, 2011. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–26105 Filed 10–7–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–1064; Directorate 

Identifier 2011–NM–075–AD] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. Model BD–100–1A10 (Challenger 

300) Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for the 

products listed above. This proposed 

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: 

It was discovered that the Horizontal 

Stabilizer Trim Actuator (HSTA) No Back 

and the Number 1 Motor Brake Assembly 

(MBA) can both fail dormant. A failure of the 

HSTA No Back and the Brake System along 

with additional component failure could 

result in an uncontrollable horizontal 

stabilizer surface runaway without the ability 

to retrim. This condition, if not corrected, 

could lead to the loss of the aeroplane. 

* * * * * 

The proposed AD would require actions 

that are intended to address the unsafe 

condition described in the MCAI. 

DATES: We must receive comments on 

this proposed AD by November 25, 

2011. 

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; 

e-mail 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–2011–1064; Directorate Identifier 

2011–NM–075–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 Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued Canadian 

Airworthiness Directive CF–2011–05, 

dated March 24, 2011 (referred to after 

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

condition for the specified products. 

The MCAI states: 

It was discovered that the Horizontal 

Stabilizer Trim Actuator (HSTA) No Back 

and the Number 1 Motor Brake Assembly 

(MBA) can both fail dormant. A failure of the 

HSTA No Back and the Brake System along 

with additional component failure could 

result in an uncontrollable horizontal 

stabilizer surface runaway without the ability 

to retrim. This condition, if not corrected, 

could lead to the loss of the aeroplane. 

As a result, new Airworthiness Limitation 

Tasks, consisting of a functional test of the 

HSTA No Back and a functional test of the 

HSTA Brake System, have been introduced to 

ensure that a dormant failure of either 

component is detected and corrected. 

This [TCCA] directive mandates the 

revision of the approved maintenance 

schedule to include these new tasks, 

including phase-in schedules. 

You may obtain further information by 

examining the MCAI in the AD docket. 

Relevant Service Information 

Bombardier, Inc. has issued 

Temporary Revision 5–2–59, dated 

November 25, 2010, to Section 5–10–40, 

‘‘Certification Maintenance 

Requirements,’’ of Part 2, 

‘‘Airworthiness Limitations,’’ of the 

Bombardier Challenger 300 BD–100 

Time Limits/Maintenance Checks 

Manual. 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 

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. 


srobinson on DSK4SPTVN1PROD with PROPOSALS
62670 Federal Register / Vol. 76, No. 196 / Tuesday, October 11, 2011 / Proposed Rules 

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 proposed 

different actions in this AD from those 

in the MCAI in order to follow FAA 

policies. Any such differences are 

highlighted in a NOTE within the 

proposed AD. 

Costs of Compliance 

Based on the service information, we 

estimate that this proposed AD would 

affect about 76 products of U.S. registry. 

We also estimate that it would take 

about 1 work-hour 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 

$6,460, or $85 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 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); 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 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–2011– 

1064; Directorate Identifier 2011–NM– 

075–AD. 

Comments Due Date 

(a) We must receive comments by 

November 25, 2011. 

Affected ADs 

(b) None. 

Applicability 

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

Model BD–100–1A10 (Challenger 300) 

airplanes, certificated in any category. 

Note 1: This AD requires revisions to 

certain operator maintenance documents to 

include new inspections. Compliance with 

these tasks 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 (j) 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 55: Stabilizers. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

It was discovered that the Horizontal 

Stabilizer Trim Actuator (HSTA) No Back 

and the Number 1 Motor Brake Assembly 

(MBA) can both fail dormant. A failure of the 

HSTA No Back and the Brake System along 

with additional component failure could 

result in an uncontrollable horizontal 

stabilizer surface runaway without the ability 

to retrim. This condition, if not corrected, 

could lead to the loss of the aeroplane. 

* * * * * 

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. 

Actions 

(g) Within 30 days the effective date of this 

AD: Revise the maintenance program by 

incorporating Task 27–40–00–107, 

‘‘Horizontal Stabilizer Trim Actuator (HSTA) 

No Back,’’ in accordance with Bombardier 

Temporary Revision 5–2–59, dated 

November 25, 2010, to Section 5–10–40, 

‘‘Certification Maintenance Requirements,’’ 

of Part 2, ‘‘Airworthiness Limitations,’’ of the 

Bombardier Challenger 300 BD–100 Time 

Limits/Maintenance Checks Manual. For this 

task, the initial compliance time starts at the 

applicable time specified in paragraph (g)(1) 

or (g)(2) of this AD. 

(1) For HSTAs with 2,600 or fewer total 

flight hours on the HSTA as of the effective 

date of this AD: Prior to the accumulation of 

3,000 total flight hours on the HSTA. 

(2) For HSTAs with more than 2,600 total 

flight hours on the HSTA as of the effective 

date of this AD: Within 400 flight hours or 

6 months after the effective date of this AD, 

whichever occurs first. 

(h) Within 30 days after the effective date 

of this AD, whichever occurs later: Revise the 

maintenance program by incorporating Task 

27–41–05–105, ‘‘Functional Test of the 

Horizontal Stabilizer Trim Actuator (HSTA) 

Brake System,’’ in accordance with 

Bombardier Temporary Revision 5–2–59, 

dated November 25, 2010, to Section 5–10– 

40, ‘‘Certification Maintenance 

Requirements,’’ of Part 2, ‘‘Airworthiness 

Limitations,’’ of the Bombardier Challenger 

300 BD–100 Time Limits/Maintenance 

Checks Manual. For this task, the initial 

compliance time starts at the applicable time 

specified in paragraph (h)(1) or (h)(2) of this 

AD. 

(1) For airplanes with 400 or fewer total 

flight hours as of the effective date of this 

AD: Prior to the accumulation of 800 total 

flight hours. 

(2) For airplanes with more than 400 total 

flight hours as of the effective date of this 

AD: Within 400 flight hours or 12 months 

after the effective date of this AD, whichever 

occurs first. 

Note 2: The maintenance program revision 

required by paragraphs (g) and (h) of this AD 

may be done by inserting a copy of 

Bombardier TR 5–2–59, dated November 25, 

2010, into Section 5–10–40, ‘‘Certification 

Maintenance Requirements,’’ of Part 2, 


srobinson on DSK4SPTVN1PROD with PROPOSALS
Federal Register / Vol. 76, No. 196 / Tuesday, October 11, 2011 / Proposed Rules 62671 

‘‘Airworthiness Limitations,’’ of the 

Bombardier Challenger 300 BD–100 Time 

Limits/Maintenance Checks Manual. When 

this TR has been included in the general 

revisions of Section 5–10–40, ‘‘Certification 

Maintenance Requirements,’’ of Part 2, 

‘‘Airworthiness Limitations,’’ of the 

Bombardier Challenger 300 BD–100 Time 

Limits/Maintenance Checks Manual, the 

general revisions may be inserted in Section 

5–10–40, ‘‘Certification Maintenance 

Requirements,’’ of Part 2, ‘‘Airworthiness 

Limitations,’’ of the Bombardier Challenger 

300 BD–100 Time Limits/Maintenance 

Checks Manual, provided that the relevant 

information in the general revision is 

identical to that in Bombardier TR 5–2–59, 

dated November 25, 2010, to Section 5–10– 

40, ‘‘Certification Maintenance 

Requirements,’’ of Part 2, ‘‘Airworthiness 

Limitations,’’ of the Bombardier Challenger 

300 BD–100 Time Limits/Maintenance 

Checks Manual. 

No Alternative Actions or Intervals 

(i) After accomplishing the revision 

required by paragraphs (g) and (h) 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 (j)(1) of this AD. 

FAA AD Differences 

Note 3: This AD differs from the MCAI 

and/or service information as follows: 

No differences. 

Other FAA AD Provisions 

(j) 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. 

Related Information 

(k) Refer to MCAI Transport Canada Civil 

Aviation (TCCA) Airworthiness Directive 

CF–2011–05, dated March 24, 2011; and 

Bombardier Temporary Revision 5–2–59, 

dated November 25, 2010, to Section 5–10– 

40, ‘‘Certification Maintenance 

Requirements,’’ of Part 2, ‘‘Airworthiness 

Limitations,’’ of the Bombardier Challenger 

300 BD–100 Time Limits/Maintenance 

Checks Manual; for related information. 

Issued in Renton, Washington, on 

September 30, 2011. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–26111 Filed 10–7–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–1061; Directorate 

Identifier 2011–NM–053–AD] 

RIN 2120–AA64 

Airworthiness Directives; Dassault 

Aviation Model FALCON 7X Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for the 

products listed above. This proposed 

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: 

The manufacturer of the Transformer 

Rectifier Unit (TRU) part of the Ram Air 

Turbine (RAT) system has identified an 

incorrect design of the part. 

* * * * * 

This condition, if not corrected, and if 

occurring while the RAT is deployed, could 

result in a degraded direct current power 

which is distributed to essential aeroplane 

systems and therefore aeroplane operations 

might be impaired. 

* * * * * 

The proposed AD would require actions 

that are intended to address the unsafe 

condition described in the MCAI. 

DATES: We must receive comments on 

this proposed AD by November 25, 

2011. 

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 Dassault 

Falcon Jet, P.O. Box 2000, South 

Hackensack, New Jersey 07606; 

telephone 201–440–6700; Internet 

http://www.dassaultfalcon.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–2011–1061; Directorate Identifier 

2011–NM–053–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 


srobinson on DSK4SPTVN1PROD with PROPOSALS