26714 Federal Register / Vol. 72, No. 91 / Friday, May 11, 2007 / Rules and Regulations 

FAA AD Differences 

(h) None. 

Other FAA AD Provisions 

(i) The following provisions also apply to 

this AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, Engine Certification 

Office, FAA, has the authority to approve 

AMOCs for this AD, if requested using the 

procedures found in 14 CFR 39.19. 

(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. 

(3) Reporting Requirements: For any 

reporting requirement in this AD, under the 

provisions of the Paperwork Reduction Act, 

the Office of Management and Budget (OMB) 

has approved the information collection 

requirements and has assigned OMB Control 

Number 2120–0056. 

Related Information 

(j) Refer to European Aviation Safety 

Agency AD 2007–0044, dated February 27, 

2007, for related information. 

(k) Contact Christopher Spinney, 

Aerospace Engineer, Engine Certification 

Office, FAA, Engine and Propeller 

Directorate, 12 New England Executive Park, 

Burlington, MA 01803; e-mail: 

Christopher.spinney@faa.gov; telephone 

(781) 238–7175; fax (781) 238–7199, for more 

information about this AD. 

Material Incorporated by Reference 

(l) You must use Turbomeca Mandatory 

Service Bulletin No. 292 73 2812, Update No. 

4, dated January 2, 2007, to do the actions 

required by this AD, unless the AD specifies 

otherwise. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

this service information under 5 U.S.C. 

552(a) and 1 CFR part 51. 

(2) For service information identified in 

this AD, contact Turbomeca, 40220 Tarnos—

France; Tel (33) 05 59 74 40 00; Telex 570 

042; Fax (33) 05 59 74 45 15. 

(3) You may review copies at the FAA, 

New England Region, Office of the Regional 

Counsel, 12 New England Executive Park, 

Burlington, MA; or 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 Burlington, Massachusetts, on 

May 4, 2007. 

Peter A. White, 

Acting Manager, Engine and Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. E7–8991 Filed 5–10–07; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2007–28009; Directorate 

Identifier 2007–NE–16–AD; Amendment 39–

15047; AD 2007–10–06] 

RIN 2120–AA64 

Airworthiness Directives; Turbomeca 

Arriel 2B1 Turboshaft Engines 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule; request for 

comments. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for the 

products listed above. This AD results 

from mandatory continuing 

airworthiness information (MCAI) 

issued 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: 

Two cases of flameout have been reported 

on Arriel 2B1 engines: One when lowering 

collective pitch on ground at landing and one 

when switching from Flight Position to idle 

Position on ground. 

Both flameout events are explained as 

follows: 

In case of stepper motor loss of steps to a 

value below the ‘‘level 1 failure’’ detection 

threshold, the fuel flow of the anti-flameout 

limit can be reduced. 

The reduction can be sufficient to cause an 

engine flameout when decreasing rapidly the 

demand for power (it can therefore also 

happen in-flight). 

This condition may lead to an 

uncommanded in-flight shutdown. On a 

single-engine helicopter, the result may be an 

emergency autorotation landing or, at worst, 

an accident. 

To prevent this, software version 5.02 (TU 

144C) increases the anti-flameout limit in the 

event of small stepper motor loss of steps 

(below the ‘‘level 1 failure’’ detection 

threshold). 

This AD requires actions that are 

intended to address the unsafe 

condition described in the MCAI. 

DATES: This AD becomes effective May 

29, 2007. 

The Director of the Federal Register 

approved the incorporation by reference 

of Turbomeca Mandatory Service 

Bulletin (MSB) No. 292 73 2144, dated 

January 5, 2007, listed in the AD as of 

May 29, 2007. 

We must receive comments on this 

AD by June 11, 2007. 

ADDRESSES: You may send comments by 

any of the following methods: 

• DOT Docket Web Site: Go to 

http://dms.dot.gov and follow the 

instructions for sending your comments 

electronically. 

• Fax: (202) 493–2251. 

• Mail: Docket Management Facility, 

U.S. Department of Transportation, 400 

Seventh Street, SW., Nassif Building, 

Room PL–401, Washington, DC 20590–

0001. 

• Hand Delivery: Room PL–401 on 

the plaza level of the Nassif Building, 

400 Seventh Street, SW., Washington, 

DC, between 9 a.m. and 5 p.m., Monday 

through Friday, except Federal holidays. 

• Federal eRulemaking Portal: http:// 

www.regulations.gov. Follow the 

instructions for submitting comments. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http://dms.dot.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 street address for the 

Docket Office (telephone (800) 647–

5227) is in the ADDRESSES section. 

Comments will be available in the AD 

docket shortly after receipt. 

FOR FURTHER INFORMATION CONTACT: 

Christopher Spinney, Aerospace 

Engineer, Engine Certification Office, 

FAA, Engine and Propeller Directorate, 

12 New England Executive Park, 

Burlington, MA 01803; e-mail: 

Christopher.spinney@faa.gov; telephone 

(781) 238–7175; fax (781) 238–7199. 

SUPPLEMENTARY INFORMATION: 

Streamlined Issuance of AD 

The FAA is implementing a new 

process for streamlining the issuance of 

ADs related to MCAI. This streamlined 

process will allow us to adopt MCAI 

safety requirements in a more efficient 

manner and will reduce safety risks to 

the public. This process continues to 

follow all FAA AD issuance processes to 

meet legal, economic, Administrative 

Procedure Act, and Federal Register 

requirements. We also continue to meet 

our technical decision-making 

responsibilities to identify and correct 

unsafe conditions on U.S.-certificated 

products. 

This AD references the MCAI and 

related service information that we 

considered in forming the engineering 

basis to correct the unsafe condition. 

The AD contains text copied from the 

MCAI and for this reason might not 

follow our plain language principles. 

Discussion 

The European Aviation Safety Agency 

(EASA), which is the Technical Agent 

for the Member States of the European 


pwalker on PROD1PC71 with RULES
Federal Register / Vol. 72, No. 91 / Friday, May 11, 2007 / Rules and Regulations 26715 

Community, has issued AD 2007–0085, 

dated April 2, 2007 (referred to after this 

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

condition for the specified products. 

The MCAI states: 

Two cases of flameout have been reported 

on Arriel 2B1 engines: One when lowering 

collective pitch on ground at landing and one 

when switching from Flight Position to idle 

Position on ground. 

Both flameout events are explained as 

follows: 

In case of stepper motor loss of steps to a 

value below the ‘‘level 1 failure’’ detection 

threshold, the fuel flow of the anti-flameout 

limit can be reduced. 

The reduction can be sufficient to cause an 

engine flameout when decreasing rapidly the 

demand for power (it can therefore also 

happen in-flight). 

This condition may lead to an 

uncommanded in-flight shutdown. On a 

single-engine helicopter, the result may be an 

emergency autorotation landing or, at worst, 

an accident. 

To prevent this, software version 5.02 (TU 

144C) increases the anti-flameout limit in the 

event of small stepper motor loss of steps 

(below the ‘‘level 1 failure’’ detection 

threshold). 

You may obtain further information by 

examining the MCAI in the AD docket. 

Relevant Service Information 

Turbomeca has issued Mandatory 

Service Bulletin No. 292 73 2144, dated 

January 5, 2005. 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 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 this State of 

Design Authority, they have notified us 

of the unsafe condition described in the 

MCAI and service information 

referenced above. We are issuing this 

AD because we evaluated all the 

information provided by the State of 

Design Authority and determined the 

unsafe condition exists and is likely to 

exist or develop on other products of the 

same type design. This AD requires 

downloading DECU software version 

5.02 as soon as practicable, but no later 

than August 31, 2007. 

Differences Between the 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 required different 

actions in this AD from those in the 

MCAI in order to follow FAA policies. 

Any such differences are described in a 

separate paragraph of the AD. These 

requirements take precedence over the 

actions copied from the MCAI. 

FAA’s Determination of the Effective 

Date 

An unsafe condition exists that 

requires the immediate adoption of this 

AD. The FAA has found that the risk to 

the flying public justifies waiving notice 

and comment prior to adoption of this 

rule. The compliance time needed to 

correct the unsafe condition requires 

action as soon as practicable after the 

effective date of this AD, but no later 

than August 31, 2007. This short 

compliance time does not afford the 

opportunity for prior public comment. 

Therefore, we determined that notice 

and opportunity for public comment 

before issuing this AD are impracticable 

and that good cause exists for making 

this amendment effective in fewer than 

30 days. 

Comments Invited 

This AD is a final rule that involves 

requirements affecting flight safety, and 

we did not precede it by notice and 

opportunity for public comment. We 

invite you to send any written relevant 

data, views, or arguments about this AD. 

Send your comments to an address 

listed under the ADDRESSES section. 

Include ‘‘Docket No. FAA–2007–28009; 

Directorate Identifier 2007–NE–16–AD’’

at the beginning of your comments. We 

specifically invite comments on the 

overall regulatory, economic, 

environmental, and energy aspects of 

this AD. We will consider all comments 

received by the closing date and may 

amend this AD because of those 

comments. 

We will post all comments we 

receive, without change, to http:// 

dms.dot.gov, including any personal 

information you provide. We will also 

post a report summarizing each 

substantive verbal contact we receive 

about this AD. 

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 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); 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 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. 

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: 

2007–10–06 Turbomeca: Amendment 39–

15047; Docket No. FAA–2007–28009; 

Directorate Identifier 2007–NE–16–AD. 

Effective Date 

(a) This airworthiness directive (AD) 

becomes effective May 29, 2007. 


pwalker on PROD1PC71 with RULES
26716 Federal Register / Vol. 72, No. 91 / Friday, May 11, 2007 / Rules and Regulations 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Turbomeca Arriel 

2B1 turboshaft engines. These engines are 

installed on, but not limited to, Eurocopter 

AS 350 B3 and EC 130 B4 single-engine 

helicopters. 

Reason 

(d) European Aviation Safety Agency 

(EASA) AD No. 2007–0085, dated April 2, 

2007, states: 

Two cases of flameout have been reported 

on Arriel 2B1 engines: one when lowering 

collective pitch on ground at landing and one 

when switching from Flight Position to idle 

Position on ground. 

Both flameout events are explained as 

follows: 

In case of stepper motor loss of steps to a 

value below the ‘‘level 1 failure’’ detection 

threshold, the fuel flow of the anti-flameout 

limit can be reduced. 

The reduction can be sufficient to cause an 

engine flameout when decreasing rapidly the 

demand for power (it can therefore also 

happen in-flight). 

This condition may lead to an 

uncommanded in-flight shutdown. On a 

single-engine helicopter, the result may be an 

emergency autorotation landing or, at worst, 

an accident. 

To prevent this, software version 5.02 (TU 

144C) increases the anti-flameout limit in the 

event of small stepper motor loss of steps 

(below the ‘‘level 1 failure’’ detection 

threshold). 

Actions and Compliance 

(e) Unless already done, do the following 

actions. 

(1) As soon as practicable, but no later than 

August 31, 2007, modify the digital 

electronic control unit (DECU) by 

downloading the TU144C software version 

5.02, using the Instructions to be 

Incorporated of Turbomeca Mandatory 

Service Bulletin (MSB) No. 292 73 2144, 

dated January 5, 2007. 

(2) Send Turbomeca the DECU replacement 

compliance certificate, as specified in 

paragraph 2D(1)(a)3 of Turbomeca MSB No. 

292 73 2144, dated January 5, 2007. 

FAA AD Differences 

(f) None. 

Other FAA AD Provisions 

(g) The following provisions also apply to 

this AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, Engine Certification 

Office, FAA, has the authority to approve 

AMOCs for this AD, if requested using the 

procedures found in 14 CFR 39.19. 

(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. 

(3) Reporting Requirements: For any 

reporting requirement in this AD, under the 

provisions of the Paperwork Reduction Act, 

the Office of Management and Budget (OMB) 

has approved the information collection 

requirements and has assigned OMB Control 

Number 2120–0056. 

Related Information 

(h) Refer to European Aviation Safety 

Agency AD 2007–0085, dated April 2, 2007, 

for related information. 

(i) Contact Christopher Spinney, Aerospace 

Engineer, Engine Certification Office, FAA, 

Engine and Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 

01803; e-mail: Christopher.spinney@faa.gov; 

telephone (781) 238–7175; fax (781) 238–

7199, for more information about this AD. 

Material Incorporated by Reference 

(j) You must use Turbomeca Mandatory 

Service Bulletin No. 292 73 2144, dated 

January 5, 2007, to do the actions required by 

this AD, unless the AD specifies otherwise. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

this service information under 5 U.S.C. 

552(a) and 1 CFR part 51. 

(2) For service information identified in 

this AD, contact Turbomeca, 40220 Tarnos—

France; Tel (33) 05 59 74 40 00; Telex 570 

042; Fax (33) 05 59 74 45 15. 

(3) You may review copies at the FAA, 

New England Region, Office of the Regional 

Counsel, 12 New England Executive Park, 

Burlington, MA; or 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 Burlington, Massachusetts, on 

May 4, 2007. 

Peter A. White, 

Acting Manager, Engine and Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. E7–8992 Filed 5–10–07; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2007–27859; Directorate 

Identifier 2007–CE–033–AD; Amendment 

39–15049; AD 2007–10–08] 

RIN 2120–AA64 

Airworthiness Directives; Pacific 

Aerospace Limited Model 750XL 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for the 

products listed above. This AD results 

from mandatory continuing 

airworthiness information (MCAI) 

issued by the aviation authority of 

another country to identify and correct 

an unsafe condition on an aviation 

product. The MCAI describes the unsafe 

condition as: 

* * *failure of the Autopilot System 

Computer resulting in the possibility of an 

out of trim condition, which may lead to loss 

of aircraft control * * * 

This AD requires actions that are 

intended to address the unsafe 

condition described in the MCAI. 

DATES: This AD becomes effective June 

15, 2007. 

On June 15, 2007 the Director of the 

Federal Register approved the 

incorporation by reference of certain 

publications listed in this AD. 

We must receive comments on this 

AD by June 11, 2007. 

ADDRESSES: You may send comments by 

any of the following methods: 

• DOT Docket Web Site: Go to http:// 

dms.dot.gov and follow the instructions 

for sending your comments 

electronically. 

• Fax: (202) 493–2251. 

• Mail: Docket Management Facility, 

U.S. Department of Transportation, 400 

Seventh Street, SW., Nassif Building, 

Room PL–401, Washington, DC 20590–

0001. 

• Hand Delivery: Room PL–401 on 

the plaza level of the Nassif Building, 

400 Seventh Street, SW., Washington, 

DC, between 9 a.m. and 5 p.m., Monday 

through Friday, except Federal holidays. 

• Federal eRulemaking Portal: http:// 

www.regulations.gov. Follow the 

instructions for submitting comments. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http://dms.dot.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 street address for the 

Docket Office (telephone (800) 647–

5227) is in the ADDRESSES section. 

Comments will be available in the AD 

docket shortly after receipt. 

FOR FURTHER INFORMATION CONTACT: Karl 

Schletzbaum, Aerospace Engineer, 901 

Locust, Room 301, Kansas City, 

Missouri 64106; telephone: (816) 329–

4146; fax: (816) 329–4090. 

SUPPLEMENTARY INFORMATION: 

Streamlined Issuance of AD 

The FAA is implementing a new 

process for streamlining the issuance of 

ADs related to MCAI. The streamlined 


pwalker on PROD1PC71 with RULES