24856 Federal Register / Vol. 80, No. 84 / Friday, May 1, 2015 / Proposed Rules 

(4) After the effective date of this AD, you 

are allowed to install on an airplane an 

aileron assembly, having a P/N 

557.05.12.015, 557.05.12.016, 557.05.12.017, 

or 557.05.12.018, provided that an aileron 

trim tab assembly, P/N 527.15.12.037 or 

527.15.12.038 is not installed on the airplane. 

(g) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, Standards Office, 

FAA, has the authority to approve AMOCs 

for this AD, if requested using the procedures 

found in 14 CFR 39.19. Send information to 

ATTN: Doug Rudolph, Aerospace Engineer, 

FAA, Small Airplane Directorate, 901 Locust, 

Room 301, Kansas City, Missouri 64106; 

telephone: (816) 329–4059; fax: (816) 329– 

4090; email: doug.rudolph@faa.gov. Before 

using any approved AMOC on any airplane 

to which the AMOC applies, notify your 

appropriate principal inspector (PI) in the 

FAA Flight Standards District Office (FSDO), 

or lacking a PI, your local FSDO. 

(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. 

(h) Related Information 

Refer to MCAI European Aviation Safety 

Agency (EASA) AD No.: 2015–0060, dated 

April 10, 2015, for related information. You 

may examine the MCAI on the Internet at 

http://www.regulations.gov by searching for 

and locating Docket No. FAA–2015–1177. 

For service information related to this AD, 

contact PILATUS AIRCRAFT LTD, Customer 

Support Manager, CH–6371 STANS, 

Switzerland; phone: +41 (0)41 619 33 33; fax: 

+41 (0)41 619 73 11; email: SupportPC12@

pilatus-aircraft.com; Internet: http://

www.pilatus-aircraft.com. You may review 

this referenced service information at the 

FAA, Small Airplane Directorate, 901 Locust, 

Kansas City, Missouri 64106. For information 

on the availability of this material at the 

FAA, call (816) 329–4148. 

Issued in Kansas City, Missouri, on April 

23, 2015. 

Earl Lawrence, 

Manager, Small Airplane Directorate, Aircraft 

Certification Service. 

[FR Doc. 2015–10073 Filed 4–30–15; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2015–0277; Directorate 

Identifier 2015–NE–05–AD] 

RIN 2120–AA64 

Airworthiness Directives; CFM 

International S.A. Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for certain 

CFM International S.A. (CFM) CFM56– 

7B series turbofan engines. This 

proposed AD was prompted by reports 

of uncommanded in-flight shutdowns 

(IFSDs) on CFM CFM56–7B engines 

following rupture of the 73-tooth 

gearshaft located in the engine accessory 

gearbox (AGB). This proposed AD 

would require magnetic chip detector 

(MCD) inspection of the affected 

gearshafts until removal. We are 

proposing this AD to prevent failure of 

certain engine AGB gearshafts, which 

could lead to failure of one or more 

engines, loss of thrust control, and 

damage to the airplane. 

DATES: We must receive comments on 

this proposed AD by June 30, 2015. 

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 CFM International Inc., 

Aviation Operations Center, 1 Neumann 

Way, M/D Room 285, Cincinnati, OH 

45125; phone: 877–432–3272; fax: 877– 

432–3329; email: aviation.fleetsupport@

ge.com. You may view this service 

information at the FAA, Engine & 

Propeller Directorate, 12 New England 

Executive Park, Burlington, MA. For 

information on the availability of this 

material at the FAA, call 781–238–7125. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http://

www.regulations.gov by searching for 

and locating Docket No. FAA–2015– 

0277; 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 proposed AD, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Office 

(phone: 800–647–5527) is in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: Kyle 

Gustafson, Aerospace Engineer, Engine 

Certification Office, FAA, Engine & 

Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

phone: 781–238–7183; fax: 781–238– 

7199; email: kyle.gustafson@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposal. Send your comments to 

an address listed under the ADDRESSES

section. Include ‘‘Docket No. FAA– 

2015–0277; Directorate Identifier 2015– 

NE–05–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 because of 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 

We have received reports of 

uncommanded IFSDs on CFM CFM56– 

7B engines following rupture of the 73- 

tooth gearshaft located in the engine 

AGB. CFM has identified an affected 

population of 73-tooth gearshafts that 

show premature wear on the teeth due 

to inadequate shot peening. In the 

process of its investigation, CFM 

identified an additional population of 

41-tooth gearshafts that is subject to the 

same premature wear. The affected 

population of 73-tooth and 41-tooth 

gearshafts exhibit a surface finish that 

leads to loss in oil film effectiveness, 

causing micro-pitting which eventually 

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Federal Register / Vol. 80, No. 84 / Friday, May 1, 2015 / Proposed Rules 24857 

leads to material separating from the 

gearshaft and its eventual failure. 

The proposed AD requires enhanced 

MCD inspection until removal of the 

gearshaft. This enhanced inspection 

requires that any material, including 

fuzz, be sent to the particles lab for 

analysis to determine the source of the 

material. We are allowing affected 

engines to continue to operate for 75 

flight hours (FHs) after the MCD 

inspection to provide sufficient time to 

determine the source of the material and 

to remove the affected gearshaft if the 

particles lab analysis finds that the 

source of the material is from an 

affected 73-tooth or 41-tooth gearshaft. 

The enhanced MCD inspection and 

particles lab analysis is repeated every 

500 FHs after the initial MCD inspection 

until the affected gearshaft is removed 

from service. This condition, if not 

corrected, could result in failure of 

certain engine AGB gearshafts, which 

could lead to failure of one or more 

engines, loss of thrust control, and 

damage to the airplane. 

Relevant Service Information Under 1 

CFR Part 51 

We reviewed CFM Service Bulletin 

(SBs) CFM56–7B S/B 72–0964, Revision 

1, dated December 15, 2014, and 

CFM56–7B S/B 72–0965, dated 

December 16, 2014. The SBs describe 

procedures for removal of affected 73- 

tooth and 41-tooth gearshafts. This 

service information is reasonably 

available; see ADDRESSES for ways to 

access this service information. 

FAA’s Determination 

We are proposing this AD because we 

evaluated all the relevant information 

and determined the unsafe condition 

described previously is likely to exist or 

develop in other products of the same 

type design. 

Proposed AD Requirements 

This proposed AD would require an 

MCD inspection within 250 FHs since 

last inspection or within 25 FHs after 

the effective date of this AD, whichever 

comes later. The proposed AD would 

also require that the MCD inspection be 

repeated every 500 FHs after the initial 

MCD inspection until removal of the 

affected gearshaft. The proposed AD 

would also require as terminating action 

that the affected gearshafts be removed. 

Differences Between This Proposed AD 

and the Service Information 

This proposed AD would require an 

MCD inspection 250 FHs since last 

inspection or within 25 FHs after the 

effective date of this AD, whichever 

comes later. CFM SB CFM56–7B S/B 

72–0964, Revision 1, dated December 

15, 2014, recommends performing a 

MCD inspection 250 FHs since last 

inspection or as soon as possible if the 

inspection was done more than 250 FHs 

ago. 

In this proposed AD, we are not 

requiring that operators send the 

particles to CFM for analysis. We are, 

however, requiring that operators 

determine if the particles are 73-tooth 

gearshaft or 41-tooth gearshaft material. 

CFM56–7B S/B 72–0964 recommends 

that if any magnetic particles, including 

fuzz are seen, operators send the 

inspection results and lab analysis to 

CFM for disposition. 

Costs of Compliance 

We estimate that this proposed AD 

would affect about 67 engines installed 

on airplanes of U.S. registry. We also 

estimate that it would take about 1 hour 

per engine to do the inspection and 8 

hours per engine to replace each 

affected gearshaft. We estimate thirty-six 

73-tooth gearshafts and forty 41-tooth 

gearshafts will need replacement at a 

cost of $12,480 and $7,680 per part, 

respectively. The average labor rate is 

$85 per hour. Based on these figures, we 

estimate the cost of the proposed AD on 

U.S. operators to be $813,855. 

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 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. 

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): 

CFM International S.A.: Docket No. FAA– 

2015–0277; Directorate Identifier 2015– 

NE–05–AD. 

(a) Comments Due Date 

We must receive comments by June 30, 

2015. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to CFM International S.A. 

(CFM) CFM56–7B engines with accessory 

gearboxes (AGBs), with 73-tooth gearshafts or 

41-tooth gearshafts, identified in Appendix A 

and Appendix B of CFM Service Bulletin 

(SB) CFM56–7B S/B 72–0964, Revision 1, 

dated December 15, 2014. 

(d) Unsafe Condition 

This AD was prompted by reports of 

uncommanded in-flight shutdowns on CFM 

CFM56–7B engines following rupture of the 

73-tooth gearshaft located in the engine AGB. 

We are issuing this AD to prevent failure of 

certain AGB gearshafts, which could lead to 

failure of one or more engines, loss of thrust 

control, and damage to the airplane. 

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24858 Federal Register / Vol. 80, No. 84 / Friday, May 1, 2015 / Proposed Rules 

(e) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(1) Initial Magnetic Chip Detector (MCD) 

Inspection and Analysis. (i) For affected 73- 

tooth gearshafts, perform an MCD inspection 

within 250 flight hours (FHs) since last 

inspection, within 25 FHs from the effective 

date of this AD, or when the gearshaft 

accumulates 3,000 FHs since new, whichever 

comes later. 

(ii) For affected 41-tooth gearshafts, 

perform an MCD inspection within 250 FHs 

since last inspection, within 25 FHs from the 

effective date of this AD, or when the 

gearshaft accumulates 6,000 FHs since new, 

whichever comes later. 

(iii) If any magnetic particles, including 

fuzz, are seen, determine with particles lab 

analysis if the particles are 73-tooth or 41- 

tooth gearshaft material. 

(iv) If the particles are 73-tooth or 41-tooth 

gearshaft material, remove the affected 

gearshaft(s) within 75 FHs since the MCD 

inspection. 

(2) Repetitive MCD Inspection and 

Analysis. (i) For affected 73-tooth gearshafts, 

perform an MCD inspection and particles lab 

analysis within every 500 FHs since the last 

MCD inspection until affected gearshaft is 

removed. 

(ii) For affected 41-tooth gearshafts, 

perform an MCD inspection and particles lab 

analysis within every 500 FHs since the last 

MCD inspection until affected gearshaft is 

removed. 

(iii) If any magnetic particles, including 

fuzz, are seen, determine with particles lab 

analysis if the particles are 73-tooth or 41- 

tooth gearshaft material. 

(iv) If the particles are 73-tooth or 41-tooth 

gearshaft material, remove the affected 

gearshaft(s) within 75 FHs since the MCD 

inspection. 

(f) Mandatory Terminating Action 

(1) Remove the affected 73-tooth gearshaft 

prior to the gearshaft accumulating 6,000 FHs 

since new or within 50 FHs after the effective 

date of this AD, whichever comes later. 

(2) Remove the affected 41-tooth gearshaft 

prior to the gearshaft accumulating 9,000 FHs 

since new or within 50 FHs after the effective 

date of this AD, whichever comes later. 

(g) Installation Prohibition 

After the effective date of this AD, do not 

install an affected gearshaft into an AGB. 

(h) Alternative Methods of Compliance 

(AMOCs) 

The Manager, Engine Certification Office, 

FAA, may approve AMOCs for this AD. Use 

the procedures found in 14 CFR 39.19 to 

make your request. You may email your 

request to: ANE-AD-AMOC@faa.gov. 

(i) Related Information 

(1) For more information about this AD, 

contact Kyle Gustafson, Aerospace Engineer, 

Engine Certification Office, FAA, Engine & 

Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

phone: 781–238–7183; fax: 781–238–7199; 

email: kyle.gustafson@faa.gov. 

(2) CFM SBs CFM56–7B S/B 72–0964, 

Revision 1, dated December 15, 2014, and 

CFM56–7B S/B 72–0965, dated December 16, 

2014, can be obtained from GE using the 

contact information in paragraph (i)(3) of this 

proposed AD. 

(3) For service information identified in 

this AD, contact CFM International Inc., 

Aviation Operations Center, 1 Neumann 

Way, M/D Room 285, Cincinnati, OH 45125; 

phone: 877–432–3272; fax: 877–432–3329; 

email: aviation.fleetsupport@ge.com. 

(4) You may view this service information 

at the FAA, Engine & Propeller Directorate, 

12 New England Executive Park, Burlington, 

MA. For information on the availability of 

this material at the FAA, call 781–238–7125. 

Issued in Burlington, Massachusetts, on 

April 17, 2015. 

Thomas A. Boudreau, 

Acting Manager, Engine & Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. 2015–09930 Filed 4–30–15; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2014–1069; Airspace 

Docket No. 14–ANM–11] 

Proposed Amendment of Class D and 

Class E Airspace, Revocation of Class 

E Airspace; Salem, OR 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: This action proposes to 

modify Class D airspace, Class E surface 

area airspace, Class E airspace extending 

upward from 700 feet above the surface, 

and remove Class E surface area 

airspace designated as an extension at 

McNary Field, Salem, OR. After a 

biennial review, the FAA found it 

necessary to amend the airspace area for 

the safety and management of 

Instrument Flight Rules (IFR) operations 

for Standard Instrument Approach 

Procedures (SIAPs) at the airport. 

DATES: Comments must be received on 

or before June 15, 2015. 

ADDRESSES: Send comments on this 

proposal 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; telephone (202) 

366–9826. You must identify FAA 

Docket No. FAA–2014–1069; Airspace 

Docket No. 14–ANM–11, at the 

beginning of your comments. You may 

also submit comments through the 

Internet at http://www.regulations.gov. 

You may review the public docket 

containing the proposal, any comments 

received, and any final disposition in 

person in the Dockets Office between 

9:00 a.m. and 5:00 p.m., Monday 

through Friday, except Federal holidays. 

The Docket Office (telephone 1–800– 

647–5527), is on the ground floor of the 

building at the above address. 

FAA Order 7400.9Y, Airspace 

Designations and Reporting Points, and 

subsequent amendments can be viewed 

online at http://www.faa.gov/air_traffic/ 

publications/. The Order is also 

available for inspection at the National 

Archives and Records Administration 

(NARA). For information on the 

availability of this proposed 

incorporation by reference material at 

NARA, call 202–741–6030, or go to 

http://www.archives.gov/federal_

register/code_of_federal-regulations/ibr_

locations.html. 

FAA Order 7400.9, Airspace 

Designations and Reporting Points, is 

published yearly and effective on 

September 15. For further information, 

you can contact the Airspace Policy and 

Regulations Group, Federal Aviation 

Administration, 800 Independence 

Avenue SW., Washington, DC 20591; 

telephone: 202–267–8783. 

FOR FURTHER INFORMATION CONTACT: 

Steve Haga, Federal Aviation 

Administration, Operations Support 

Group, Western Service Center, 1601 

Lind Avenue SW., Renton, WA 98057; 

telephone (425) 203–4563. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

Interested parties are invited to 

participate in this proposed rulemaking 

by submitting such written data, views, 

or arguments, as they may desire. 

Comments that provide the factual basis 

supporting the views and suggestions 

presented are particularly helpful in 

developing reasoned regulatory 

decisions on the proposal. Comments 

are specifically invited on the overall 

regulatory, aeronautical, economic, 

environmental, and energy-related 

aspects of the proposal. 

Communications should identify both 

docket numbers and be submitted in 

triplicate to the address listed above. 

Commenters wishing the FAA to 

acknowledge receipt of their comments 

on this notice must submit with those 

comments a self-addressed, stamped 

postcard on which the following 

statement is made: ‘‘Comments to 

Docket No. FAA–2014–1069/Airspace 

Docket No. 14–ANM–11.’’ The postcard 

will be date/time stamped and returned 

to the commenter. 

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