34282 Federal Register / Vol. 78, No. 110 / Friday, June 7, 2013 / Proposed Rules 

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, 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 to the extent that it justifies 

making a regulatory distinction; 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 an economic 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 airworthiness 

directive (AD): 

Bell Helicopter Textron Canada Limited 

(BELL): Docket No. FAA–2013–0488; 

Directorate Identifier 2008–SW–002–AD. 

(a) Applicability 

This AD applies to the following 

helicopters, certificated in any category: 

(1) Bell Model 206B, serial number (S/N) 

004 through 4675, including helicopters 

converted from Model 206A; and 

(2) Bell Model 206L, S/N 45001 through 

45153, and 46601 through 46617. 

(b) Unsafe Condition 

This AD defines the unsafe condition as a 

third stage turbine vibration, which could 

result in turbine failure, engine power loss, 

and subsequent loss of control of the 

helicopter. 

(c) Comments Due Date 

We must receive comments by August 6, 

2013. 

(d) Compliance 

You are responsible for performing each 

action required by this AD within the 

specified compliance time unless it has 

already been accomplished prior to that time. 

(e) Required Actions 

Within 30 days: 

(1) For Model 206B helicopters: 

(i) Revise the Operating Limitations section 

of the Model 206B Rotorcraft Flight Manual 

(RFM) by inserting Section 1, Operating 

Limitations, page 1–2A, of Bell BHT–206B– 

FM–1, revision B–50, dated December 8, 

2008. 

(ii) Remove placard part number (P/N) 

230–075–213–121, if installed. 

(iii) Install placard P/N 230–075–213–125, 

or equivalent, on the instrument panel 

directly below the dual tachometer. 

(2) For Model 206L helicopters: 

(i) Revise the Operating Limitations section 

of the Model 206L RFM by inserting Section 

1, Operating Limitations, page 1–4B, of Bell 

BHT–206L–FM–1, revision 28, dated 

December 8, 2008. 

(ii) Remove placard P/N 230–075–213–123, 

if installed. 

(ii) Install placard P/N 230–075–213–127, 

or equivalent, on the instrument panel below 

the dual tachometer. 

(f) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Safety Management 

Group, FAA, may approve AMOCs for this 

AD. Send your proposal to: Chinh Vuong, 

Aviation Safety Engineer, Safety Management 

Group, Rotorcraft Directorate, FAA, 2601 

Meacham Blvd., Fort Worth, Texas 76137; 

telephone (817) 222–5110; email 

chinh.vuong@faa.gov. 

(2) For operations conducted under a 14 

CFR part 119 operating certificate or under 

14 CFR part 91, subpart K, we suggest that 

you notify your principal inspector, or 

lacking a principal inspector, the manager of 

the local flight standards district office or 

certificate holding district office before 

operating any aircraft complying with this 

AD through an AMOC. 

(g) Additional Information 

(1) Bell Alert Service Bulletin (ASB) No. 

206–07–115, Revision C, dated February 4, 

2009, and Bell ASB No. 206L–07–146, 

Revision B, dated March 3, 2009, which are 

not incorporated by reference, contain 

additional information about the subject of 

this AD. For service information identified in 

this AD, contact Bell Helicopter Textron 

Canada Limited, 12,800 Rue de l’Avenir, 

Mirabel, Quebec J7J1R4; telephone (450) 

437–2862 or (800) 363–8023; fax (450) 433– 

0272; or at http://www.bellcustomer.com/ 

files/. You may review a copy of the service 

information at the FAA, Office of the 

Regional Counsel, Southwest Region, 2601 

Meacham Blvd., Room 663, Fort Worth, 

Texas 76137. 

(2) The subject of this AD is addressed in 

Transport Canada AD No. CF–2007–13R2, 

dated December 9, 2009. 

(h) Subject 

Joint Aircraft Service Component (JASC) 

Code: 7250: Turbine Section. 

Issued in Fort Worth, Texas, on May 29, 

2013. 

Kim Smith, 

Directorate Manager, Rotorcraft Directorate, 

Aircraft Certification Service. 

[FR Doc. 2013–13481 Filed 6–6–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2013–0489; Directorate 

Identifier 2008–SW–003–AD] 

RIN 2120–AA64 

Airworthiness Directives; Bell 

Helicopter Textron Canada Limited 

(Bell) Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for certain 

Bell Model 206L–3 and 206L–4 

helicopters. This proposed AD would 

require installing a placard beneath the 

engine power dual tachometer and 

revising the limitations section of the 

rotorcraft flight manual (RFM). This 

proposed AD is prompted by several 

incidents of third stage engine turbine 

wheel failures, which were caused by 

excessive vibrations at certain engine 

speeds during steady-state operations. 


pmangrum on DSK3VPTVN1PROD with PROPOSALS-1
Federal Register / Vol. 78, No. 110 / Friday, June 7, 2013 / Proposed Rules 34283 

The proposed actions are intended to 

alert pilots to avoid certain engine 

speeds during steady-state operations, 

prevent failure of the third stage engine 

turbine, engine power loss, and 

subsequent loss of control of the 

helicopter. 

DATES: We must receive comments on 

this proposed AD by August 6, 2013. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Docket: Go to 

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

online instructions for sending your 

comments electronically. 

• Fax: 202–493–2251. 

• Mail: Send comments to the U.S. 

Department of Transportation, Docket 

Operations, M–30, West Building 

Ground Floor, Room W12–140, 1200 

New Jersey Avenue SE., Washington, 

DC 20590–0001. 

• Hand Delivery: Deliver to the 

‘‘Mail’’ address between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

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 

economic 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 service information identified in 

this proposed AD, contact Bell 

Helicopter Textron Canada Limited, 

12,800 Rue de l’Avenir, Mirabel, Quebec 

J7J1R4; telephone (450) 437–2862 or 

(800) 363–8023; fax (450) 433–0272; or 

at http://www.bellcustomer.com/files/. 

You may review the referenced service 

information at the FAA, Office of the 

Regional Counsel, Southwest Region, 

2601 Meacham Blvd., Room 663, Fort 

Worth, Texas 76137. 

FOR FURTHER INFORMATION CONTACT: 

Chinh Vuong, Aviation Safety Engineer, 

Safety Management Group, Rotorcraft 

Directorate, FAA, 2601 Meacham Blvd., 

Fort Worth, Texas 76137; telephone 

(817) 222–5110; email 

chinh.vuong@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to participate in this 

rulemaking by submitting written 

comments, data, or views. We also 

invite comments relating to the 

economic, environmental, energy, or 

federalism impacts that might result 

from adopting the proposals in this 

document. The most helpful comments 

reference a specific portion of the 

proposal, explain the reason for any 

recommended change, and include 

supporting data. To ensure the docket 

does not contain duplicate comments, 

commenters should send only one copy 

of written comments, or if comments are 

filed electronically, commenters should 

submit only one time. 

We will file in the docket all 

comments that we receive, as well as a 

report summarizing each substantive 

public contact with FAA personnel 

concerning this proposed rulemaking. 

Before acting on this proposal, we will 

consider all comments we receive on or 

before the closing date for comments. 

We will consider comments filed after 

the comment period has closed if it is 

possible to do so without incurring 

expense or delay. We may change this 

proposal in light of the comments we 

receive. 

Discussion 

Transport Canada (TC), which is the 

aviation authority for Canada, has 

issued TC AD No. CF–2005–28R1, dated 

June 14, 2007, to correct an unsafe 

condition for certain Model 206L–3 and 

206L–4 helicopters. TC advises of 

several failures of third stage turbine 

wheels used in Rolls Royce 250–C30S 

and 250–C–47B engines. According to 

TC, Rolls Royce has determined that 

detrimental vibrations can occur within 

a particular range of turbine speeds, and 

may be a contributing factor to these 

failures. Bell has revised the RFM and 

has provided a corresponding decal to 

inform pilots to avoid steady-state 

operations between 71.8% and 91.5% 

turbine speeds. 

The TC AD requires amending the 

RFMs, advising pilots of the change, and 

installing a decal as described in Bell 

Alert Service Bulletin (ASB) No. 206L– 

05–134, dated June 8, 2005. 

FAA’s Determination 

These helicopters have been approved 

by the aviation authority of Canada and 

are approved for operation in the United 

States. Pursuant to our bilateral 

agreement with Canada, TC, its 

technical representative, has notified us 

of the unsafe condition described in its 

AD. We are proposing this AD because 

we evaluated all known relevant 

information and determined that an 

unsafe condition is likely to exist or 

develop on other products of the same 

type design. 

Related Service Information 

Bell has issued ASB No. 206L–05– 

134, Revision A, dated April 9, 2007, 

which describes procedures for 

installing a placard on the instrument 

panel below the main rotor RPM (Nr)/ 

power turbine RPM (N2) dual 

tachometer and for inserting the RFM 

changes into the flight manual. Revision 

A to ASB was issued to exclude Bell 

Model 206L–3 and 206L–4 helicopters 

with 250–C20R engines installed under 

supplemental type certificate (STC) 

number SR00036SE from the 

requirements of ASB 206L–05–134. 

Proposed AD Requirements 

This proposed AD would require 

installing a placard on the instrument 

panel below the NR/N2 dual tachometer 

and revising the Operating Limitations 

section of the Model 206L3 and 206L4 

RFMs to limit steady-state operations 

between speeds of 71.8% and 91.5%. 

Differences Between This Proposed AD 

and the TC AD 

The TC AD requires compliance 

within 10 calendar days, the proposed 

AD requires compliance within 30 days. 

Costs of Compliance 

We estimate that this proposed AD 

would affect 525 helicopters of U.S. 

Registry. Based on an average labor rate 

of $85 per hour, we estimate that 

operators may incur the following costs 

in order to comply with this AD. 

Amending the RFM would require about 

0.5 work-hours, for a cost per helicopter 

of about $43 and a cost to U.S. operators 

of $22,575. Installing the decal would 

require about 0.2 work-hours, and 

required parts would cost $20, for a cost 

per helicopter of $37 and a cost to U.S. 

operators of $19,425. Based on these 

estimates, the total cost of this proposed 

AD would be $80 per helicopter and 

$42,000 for the U.S. operator fleet. 

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 


pmangrum on DSK3VPTVN1PROD with PROPOSALS-1
34284 Federal Register / Vol. 78, No. 110 / Friday, June 7, 2013 / Proposed Rules 

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, 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 to the extent that it justifies 

making a regulatory distinction; 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 an economic 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 airworthiness 

directive (AD): 

Bell Helicopter Textron Canada Limited 

(Bell): Docket No. FAA–2013–0489; 

Directorate Identifier 2008–SW–003–AD. 

(a) Applicability 

This AD applies to the following 

helicopters, certificated in any category: 

(1) Bell Model 206L–3, serial number 

(S/N) 51001 through 51612; and 

(2) Bell Model 206L–4, S/N 52001 through 

52313. 

(b) Unsafe Condition 

This AD defines the unsafe condition as a 

third stage turbine vibration, which could 

result in turbine failure, engine power loss, 

and subsequent loss of control of the 

helicopter. 

(c) Comments Due Date 

We must receive comments by August 6, 

2013. 

(d) Compliance 

You are responsible for performing each 

action required by this AD within the 

specified compliance time unless it has 

already been accomplished prior to that time. 

(e) Required Actions 

Within 30 days: 

(1) Install placard P/N 230–075–213–117, 

or equivalent, on the instrument panel 

directly below the dual tachometer. 

(2) For Model 206L–3 helicopters, revise 

the Operating Limitations section of the 

Model 206L–3 Rotorcraft Flight Manual 

(RFM) by inserting Section 1, Limitations, 

pages 1–7 and 1–8, of Bell BHT–206L3– 

FM–1, revision 6, dated April 26, 2005. 

(3) For Model 206L–4 helicopters, revise 

the Operating Limitations section of the 

Model 206L–4 RFM by inserting Section 1, 

Limitations, pages 1–6 and 1–13, of Bell 

BHT–206L4–FM–1, Revision 2, dated August 

22, 2008. 

(f) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Safety Management 

Group, FAA, may approve AMOCs for this 

AD. Send your proposal to: Chinh Vuong, 

Aviation Safety Engineer, Safety Management 

Group, Rotorcraft Directorate, FAA, 2601 

Meacham Blvd., Fort Worth, Texas 76137; 

telephone (817) 222–5110; email 

chinh.vuong@faa.gov. 

(2) For operations conducted under a 14 

CFR part 119 operating certificate or under 

14 CFR part 91, subpart K, we suggest that 

you notify your principal inspector, or 

lacking a principal inspector, the manager of 

the local flight standards district office or 

certificate holding district office before 

operating any aircraft complying with this 

AD through an AMOC. 

(g) Additional Information 

(1) Bell Alert Service Bulletin No. 206L– 

05–134, Revision A, dated April 9, 2007, 

which is not incorporated by reference, 

contains additional information about the 

subject of this AD. For service information 

identified in this AD, contact Bell Helicopter 

Textron Canada Limited, 12,800 Rue de 

l’Avenir, Mirabel, Quebec J7J1R4; telephone 

(450) 437–2862 or (800) 363–8023; fax (450) 

433–0272; or at http:// 

www.bellcustomer.com/files/. You may 

review a copy of the service information at 

the FAA, Office of the Regional Counsel, 

Southwest Region, 2601 Meacham Blvd., 

Room 663, Fort Worth, Texas 76137. 

(2) The subject of this AD is addressed in 

Transport Canada AD No. CF–2005–28R1, 

dated June 14, 2007 

(h) Subject 

Joint Aircraft Service Component (JASC) 

Code: 7250: Turbine Section. 

Issued in Fort Worth, Texas, on May 29, 

2013. 

Kim Smith, 

Directorate Manager, Rotorcraft Directorate, 

Aircraft Certification Service. 

[FR Doc. 2013–13483 Filed 6–6–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–0940; Directorate 

Identifier 2012–NE–26–AD] 

RIN 2120–AA64 

Airworthiness Directives; Turbomeca 

S.A. Turboshaft Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to supersede an 

existing airworthiness directive (AD) 

that applies to all Turbomeca S.A. Arriel 

2D turboshaft engines. The existing AD 

currently requires replacing the 

hydromechanical metering unit (HMU) 

at a reduced life. Since we issued that 

AD, further cases of deterioration of 

HMU rotating components have been 

reported before the HMU reached the 

replacement interval in that AD. The 

proposed AD would maintain the 

existing AD requirements and would 

also require inspections of the HMU. We 

are proposing this AD to prevent an 

uncommanded in-flight shutdown of the 

engine, and possible loss of the 

helicopter. 

DATES: We must receive comments on 

this proposed AD by August 6, 2013. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, 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: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this AD, contact Turbomeca, 40220 


pmangrum on DSK3VPTVN1PROD with PROPOSALS-1