This section of the FEDERAL REGISTER

contains regulatory documents having general

applicability and legal effect, most of which

are keyed to and codified in the Code of

Federal Regulations, which is published under

50 titles pursuant to 44 U.S.C. 1510.

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REGISTER issue of each week.

Rules and Regulations Federal Register

12795 

Vol. 81, No. 48 

Friday, March 11, 2016 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2015–3661; Directorate 

Identifier 2015–NE–24–AD; Amendment 39– 

18422; AD 2016–05–04] 

RIN 2120–AA64 

Airworthiness Directives; Dowty 

Propellers Constant Speed Propellers 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Dowty Propellers R352/6–123–F/1, 

R352/6–123–F/2, and R410/6–123–F/35 

model propellers. This AD was 

prompted by reports of dowel hole 

cracks in the face of the rear hub half. 

This AD requires installing dowel hole 

liners as necessary. We are issuing this 

AD to prevent loss of structural integrity 

of the propeller hub, which could result 

in damage to the propeller and damage 

to the airplane. 

DATES: This AD becomes effective April 

15, 2016. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of April 15, 2016. 

ADDRESSES: For service information 

identified in this final rule, contact 

Dowty Propellers, 114 Powers Court, 

Sterling, VA 20166; phone: 703–421– 

4434; fax: 703–450–0087; email: 

technicalsupport@dowty.com; Internet: 

http://dowty.com/services/repair-andoverhaul. You may view this service 

information at the FAA, Engine & 

Propeller Directorate, 1200 District 

Avenue, Burlington, MA 01803. For 

information on the availability of this 

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. FAA–2015– 

3661. 

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– 

3661; 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 mandatory 

continuing airworthiness information 

(MCAI), the regulatory evaluation, any 

comments received, and other 

information. The address for the Docket 

Office (phone: 800–647–5527) is 

Document Management Facility, U.S. 

Department of Transportation, Docket 

Operations, M–30, West Building 

Ground Floor, Room W12–140, 1200 

New Jersey Avenue SE., Washington, 

DC 20590. 

FOR FURTHER INFORMATION CONTACT: 

Michael Schwetz, Aerospace Engineer, 

Boston Aircraft Certification Office, 

FAA, Engine & Propeller Directorate, 

1200 District Avenue, Burlington, MA 

01803; phone: 781–238–7761; fax: 781– 

238–7898; email: michael.schwetz@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to the specified products. The 

NPRM was published in the Federal 

Register on October 13, 2015 (80 FR 

61330). The NPRM proposed to correct 

an unsafe condition for the specified 

products. The MCAI states: 

Cracking around the hub location dowel 

holes in the face of the rear hub half has 

occurred sporadically. Previous 

investigations found no manufacturing 

defects in cracked hubs and concluded that 

the hub cracking was caused by damage to 

the dowel holes during propeller installation. 

Since that original SB was issued, three 

hubs have been found to show cracking 

around the location dowel holes. The hubs 

were all found cracked within a short period 

of time and all had low time since new. 

This condition, if not detected, can 

adversely affect the structural integrity of the 

propeller hub, with possible damage to the 

propeller and to the aeroplane. 

You may obtain further information 

by examining the MCAI in the AD 

docket on the Internet at http://

www.regulations.gov by searching for 

and locating Docket No. FAA–2015– 

3661. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

received no comments on the NPRM (80 

FR 61330, October 13, 2015). 

However, we changed paragraph (e) 

Actions and Compliance to revise the 

compliance times to read, ‘‘(1) At the 

next removal of the propeller from the 

airplane, after the effective date of this 

AD, install liners into the hub location 

dowel holes and identify the hub P/N. 

(2) Use Dowty Propellers Alert 

Service Bulletin (ASB) No. F50–61– 

A165, Revision 2, dated July 28, 2015 to 

install the liners and identify the hub.’’ 

We removed Component Maintenance 

Manual (CMM) 61–10–34, Repair No. 

53, dated May 15, 2013, from the Other 

Related Service Information paragraph 

of this AD. 

We removed Component Maintenance 

Manual (CMM) 61–10–34, Repair No. 

53, dated May 15, 2013, which relates 

to repair scheme 650510057, from the 

Credit for Previous Actions paragraph 

(f)(2) of this AD. 

We removed CMM 61–10–34, Repair 

No. 53, dated May 15, 2013, from the 

Related Information paragraph (h) of 

this AD. 

Conclusion 

We reviewed the available data and 

determined that air safety and the 

public interest require adopting this AD 

with the changes described previously. 

We determined that these changes will 

not increase the economic burden on 

any operator or increase the scope of 

this AD. 

Related Service Information Under 1 

CFR Part 51 

Dowty Propellers has issued (ASB) 

No. F50–61–A165, Revision 2, dated 

July 28, 2015. The service information 

describes procedures for installing 

liners in the hub location dowel holes 

in the face of the rear hub half and 

identifying the hub with the repair 

number. This service information is 

reasonably available because the 

interested parties have access to it 

through their normal course of business 

or by the means identified in the 

ADDRESSES section of this final rule. 


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12796 Federal Register / Vol. 81, No. 48 / Friday, March 11, 2016 / Rules and Regulations 

Costs of Compliance 

We estimate that this AD affects 4 

propellers installed on airplanes of U.S. 

registry. We also estimate that it will 

take about 5 hours per propeller to 

comply with this AD. The average labor 

rate is $85 per hour. Required parts cost 

about $322 per propeller. Based on 

these figures, we estimate the cost of 

this AD on U.S. operators to be $2,988. 

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), 

(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. 

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 airworthiness 

directive (AD): 

2016–05–04 Dowty Propellers: Amendment 

39–18422; Docket No. FAA–2015–3661; 

Directorate Identifier 2015–NE–24–AD. 

(a) Effective Date 

This AD becomes effective April 15, 2016. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Dowty Propellers R352/ 

6–123–F/1, R352/6–123–F/2, and R410/6– 

123–F/35 model propellers, part numbers (P/ 

Ns) 660715001, 660715004, and 660715005 

with hub P/Ns 660715201, 660715255, 

660720217, 660720241, 660720252, 

660720260, and 660720288, installed. 

(d) Reason 

This AD was prompted by reports of dowel 

hole cracks in the face of the rear hub half. 

We are issuing this AD to prevent loss of 

structural integrity of the propeller hub, 

which could result in damage to the 

propeller and damage to the airplane. 

(e) Actions and Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(1) At the next removal of the propeller 

from the airplane, after the effective date of 

this AD, install liners into the hub location 

dowel holes and identify the hub P/N. 

(2) Use Dowty Propellers Alert Service 

Bulletin (ASB) No. F50–61–A165, Revision 2, 

dated July 28, 2015 to install the liners and 

identify the hub. 

(f) Credit for Previous Actions 

You may take credit for the actions 

required by paragraph (e) of this AD if you 

performed those actions before the effective 

date of this AD using Dowty Propellers ASB 

No. F50–61–A165, Revision 1, dated May 12, 

2015; or initial issue, dated November 19, 

2012. 

(g) Alternative Methods of Compliance 

(AMOCs) 

The Manager, Boston Aircraft Certification 

Office, FAA, may approve AMOCs for this 

AD. Use the procedures found in 14 CFR 

39.19 to make your request. 

(h) Related Information 

(1) For more information about this AD, 

contact Michael Schwetz, Aerospace 

Engineer, Boston Aircraft Certification Office, 

FAA, 1200 District Avenue, Burlington, MA 

01803; phone: 781–238–7761; fax: 781–238– 

7898; email: michael.schwetz@faa.gov. 

(2) Refer to MCAI European Aviation 

Safety Agency AD 2015–0158, dated July 30, 

2015, for more information. You may 

examine the MCAI in the AD docket on the 

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

searching for and locating it in Docket No. 

FAA–2015–3661. 

(i) Material Incorporated by Reference 

(1) The Director of the 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) Dowty Propellers Alert Service Bulletin 

No. F50–61–A165, Revision 2, dated July 28, 

2015. 

(ii) Reserved. 

(3) For Dowty Propellers service 

information identified in this AD, contact 

Dowty Propellers, 114 Powers Court, 

Sterling, VA 20166; phone: 703–421–4434; 

fax: 703–450–0087; email: technicalsupport@

dowty.com; Internet: http://dowty.com/

services/repair-and-overhaul. 

(4) You may view this service information 

at FAA, Engine & Propeller Directorate, 1200 

District Avenue, Burlington, MA. For 

information on the availability of this 

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

(5) You may view this service information 

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/ibrlocations.html. 

Issued in Burlington, Massachusetts, on 

February 24, 2016. 

Robert J. Ganley, 

Acting Manager, Engine & Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. 2016–05460 Filed 3–10–16; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2015–7205; Directorate 

Identifier 2015–CE–025–AD; Amendment 

39–18419; AD 2016–05–01] 

RIN 2120–AA64 

Airworthiness Directives; Piper 

Aircraft, Inc. Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 


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