[Docket No. F AA-2016-3692; Directorate Identifier 2016-NE-05-AD; Amendment 

39-18458; AD 2016-07-13] 

RIN 2120-AA64 

Airworthiness Directives; GE Aviation Czech s.r.o. Turboprop Engines 

AGENCY: Federal Aviation Administration (FAA), DOT. 

ACTION: Final rule; request for comments. 

SUMMARY: We are adopting a new airworthiness directive (AD) for certain GE 

Aviation Czech s.r.o. M601E-ll turboprop engines. This AD requires inspection ofthe 

engine power turbine (PT) disk and, if found damaged, its replacement with a part 

eligible for installation. This AD was prompted by discovery of damage to certain engine 

PT disks during engine shop visits. We are issuing this AD to prevent failure of the 

engine PT disk, which could result in release of high-energy debris, damage to the 

engine, and reduced control of the airplane. 

DATES: This AD becomes effective [INSERT DATE 15 DAYS AFTER DATE OF 

PUBLICATION IN THE FEDERAL REGISTER]. 

The Director of the Federal Register approved the incorporation by reference of a 

certain publication listed in this AD as of [INSERT DATE 15 DAYS AFTER DATE OF 

PUBLICATION IN T1 IE FEDERAL REGISTER. 
instructions for submitting comments. 

• Mail: U.S. Department ofTransportation, Docket Operations, M-30,West 

Building Ground Floor, Room Wl 2-140, 1200 New Jersey Avenue SE., Washington, DC 

20590-0001. 

• I land Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., 

Monday through Friday, except Federal holidays. 

• Fax: 202-493-225 1. 

For service information identified in this AD, contact GE Aviation Czech s.r.o., 

Beranovych 65, 199 02 Praha 9 - Letnany, Czech Republic; phone: +420 222 538 Ill ; 

fax: +420 222 538 222. You may view this service information at the FAA, Engine & 

Propeller Directorate, 1200 District A venue, Burlington, MA 01803. For information on 

the availability ofthis material at the FAA, call 781-238-7125. It is also available on the 

Internet at http://www.regulations.gov by searching for and locating Docket No. FAA20 16-3692. 

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. F AA-20 16-3692; or in person at the Docket 

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Operations office between 9 a.m. and 5 p.m., Monday through Friday, except Federal 

holidays. The AD docket contains this AD, the mandatory continuing airworthiness 

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Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 

District Avenue, Burlington, MA 01803; phone: 781-238-7765; fax: 781-238-7199; 

email: kenneth.steeves@faa.gov. 

SUPPLEMENTARY INFORMATION: 

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. F AA-2016-3692; 

Directorate Identifier 2016-NE-05-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 ofthose 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 with FAA personnel 

concerning this AD. 

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MCAI"), to correct an unsafe condition for the specified products. The MCAI states: 

During engine shop visits or overhauls, certain power turbine (PT) 

disks may have been damaged in the area of the balance weights. 

Additional PT disks with non-conforming geometry of the slot 

radius may have also been released to service as a result of 

incorrect machining of the PT disk slot. 

This condition, if not corrected, could lead to a PT disk failure, 

with subsequent release of high-energy debris, possibly resulting in 

damage to, and/or reduced control of, the aeroplane. 

You may obtain further information by examining the MCAI in the AD docket on 

the Intemet at http://www.regulations.gov by searching for and locating Docket No. 

FAA-2016-3692. 

Related Service Information under 1 CFR Part 51 

GE Aviation Czech s.r.o. has issued Alert Service Bulletin (ASB) No. SB-2016-

72-50-00-1/00, dated January 21, 2016. The ASB describe procedures for inspection of 

the PT disk. This service infonnation is reasonably available because the interested 

parties have access to it through their nmmal course of business or by the means 

identified in the ADDRESSES section of this AD. 

FAA's Determination and Requirements of This AD 

This product has been approved by the aviation authority of the Czech Republic, 

and is approved for operation in the United States. Pursuant to our bilateral agreement 

with the European Community, EASA has notified us of the unsafe condition described 

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p

a 

part eligible for installation. 

FAA's Determination of the Effective Date 

No domestic operators use this product. Therefore, we find that notice and 

opportunity for prior public comment are unnecessary and that good cause exists for 

making this amendment effective in less than 30 days. 

Costs of Compliance 

We estimate that this AD affects 0 engines installed on airplanes of U.S. registry. 

We also estimate that it will take about 60 hours per engine to do the inspection required 

by this AD. The average labor rate is $85 per hour. Based on these figures, we estimate 

the total cost of the AD to U.S. operators to be $0. 

Authority for This Rulcmaking 

Title 49 ofthe 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 JJI, 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 1inds 

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We detennined 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, [ 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), 

(3) Will not afiect 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. 

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: 

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20 16-07-13 GE Aviation Czech s.r.o. (Type Certificate previously held by WALTER 

Engines a.s., Walter a.s., and MOTORLET a.s.): Amendment 39-18458; Docket No. 

F AA-20 16-3692; Directorate Identifier 20 16-NE-05-AD. 

(a) Effective Date 

This AD is effective fiNSERT DATE 15 DAYS AFTER DATE OF 

PUBLICATION TN THE FEDERAL REGISTER). 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to G E Aviation Czech s.r.o M60 1 E-11 turboprop engine models 

with engine power turbine (PT) disk, part number 3220.6 and serial number EE8, EF8, or 

KR5, installed. 

(d) Reason 

This AD was prompted by discovery of damage to certain engine PT disks during 

engine shop visits. We are issuing this AD to prevent failure of the engine PT disk, which 

could result in release of high-cnerg) debris, damage to the engine, and reduced control 

of the airplane. 

(c) Actions and Compliance 

Comply with this AD within the compliance times specified. unless already done. 

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(2) If the engine PT disk fails to meet the acceptance criteria in Appendix B, 

paragraph 5 ofGE Aviation Czech s.r.o. ASB No. SB-2016-72-50-00-1/00, dated January 

21, 2016, replace the PT disk with a part eligible for installation. 

(f) Installation Prohibition 

After the effective date of this AD: 

(1) Do not operate any engine with aPT disk serial number listed in paragraph (c) 

of this AD, unless the disk was inspected per the requirements of paragraph (e) ofthis 

AD; and 

(2) Do not install aPT disk that does not meet the acceptance criteria in Appendix 

B, paragraph 5 ofGE Aviation Czech s.r.o. ASB No. SB-2016-72-50-00-1/00, dated 

January 21,2016, onto any engine. 

(g) 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. 

(h) Related Information 

(1) For more infonnation about this AD, contact Kenneth Steeves, Aerospace 

Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 

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the MCAI in the AD docket on the Internet at http://v.rww.regulations.gov by searching 

for and locating it in Docket No. FAA-2016-3692. 

(i) Material Incorporated by Reference 

(1) The Director ofthe Federal Register approved the incorporation by reference 

(IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information as applicable to do the actions required 

by this AD, unless the AD specifies otherwise. 

(i) GE Aviation Czech s.r.o. Ale11 Service Bulletin No. SB-2016-72-50-00-1/00, 

dated January 21,2016. 

(ii) Reserved. (3) ForGE Aviation Czech s.r.o service infonnation identified in this AD, contact 

GE Aviation Czech s.r.o., Beranovych 65, 199 02 Praha 9 - Letnany, Czech Republic; 

phone: +420 222 538 111; fax: +420 222 538 222. 

(4) You may view this service information at FAA, Engine & Propeller 

Directorate, 1200 District Avenue, Burlington, MA 01803. For information on the 

availability ofthis material at the FAA, call 781-238-7125. 

(5) You may view this service infOimation at the National Archives and Records 

Administration (NARA). For information on the availability of this material at NARA, 

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('&{{~V\. m D r..J.J-A:Jt..JU41.cL1 c 

Colleen M. D' Alessandro, 

Manager, Engine & Propeller Directorate, 

Aircraft Certification Service. 

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