DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA-2013-0262; Directorate Identifier 2013-NE-13-AD] 

RIN 2120-AA64 

[4910-13-P] 

Airworthiness Directives; Hamilton Standard Division and Hamilton Sundstrand 

Corporation Propellers. 

AGENCY: Federal Aviation Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking (NPRM). 

SUMMARY: We propose to adopt a new airworthiness directive (AD) for Hamilton 

Standard Division model6/5500/F and 24PF and Hamilton Sundstrand Corporation 

model 14RF, 14SF, 247F, and 568F series propellers. This proposed AD was prompted 

by the amount of corrosion detected during major inspections (Mis). This proposed AD 

would require incorporating inspections, based on a calendar time, into the propeller 

maintenance schedule. We are proposing this AD to prevent corrosion that could result in 

propeller failure and loss of airplane control. 

DATES: We must receive comments on this proposed AD by [INSERT DATE 60 

DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER]. 

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 proposed AD, contact Hamilton 

Sundstrand Corporation, One Hamilton Road, Mail Stop 1A-3-C63, Windsor Locks, CT 

06096-1010; or Hamilton Standard Division, One Hamilton Road, United Technologies 

Corporation, Mail Stop 1A-3-C63, Windsor Locks, CT 06096-1010; phone: 877-808-

7575; fax: 860-660-0372; email: tech.solutions@hs.utc.com; Internet: 

http:/ /myhs.hamiltonsundstrand.com. 

You may view this service information at the FAA, Engine & Propeller 

Directorate, 12 New England Executive Park, Burlington, MA 01803. For information on 

the availability ofthis 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; 

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: Michael Schwetz, Aerospace 

Engineer, Boston Aircraft Certification Office, FAA, 12 New England Executive Park, 

Burlington, MA 01803; phone: 781-238-7761; fax: 781-238-7170; email: 

michael.schwetz@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. 

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Include "Docket No. FAA-2013-0262; Directorate Identifier 2013-NE-13-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 received reports about increased corrosion detected during Mis of Hamilton 

Standard Division model 6/5500/F and 24PF and Hamilton Sundstrand Corporation 

model 14RF, 14SF, 247F, and 568F series propellers. The propellers were found to 

accumulate fewer flight hours per year as they aged. The longer time between Mis 

contributes to an increased potential for corrosion to accumulate to critical limits. 

Hamilton Sundstrand developed, and we approved, six Airworthiness Limitations 

Sections (ALSs) of the applicable maintenance manuals to date. Each ALS establishes 

the new compliance times for Mis of the blades and hubs by adding a calendar time limit 

for the inspection. This condition, if not corrected, could result in propeller failure and 

loss of airplane control. 

Relevant Service Information 

We reviewed the Hamilton Sundstrand ALS in Maintenance Manual P5185, 

Revision 13, dated December 13, 2011; P5206, Revision 9, dated February 22, 2013; 

P5186, Revision 12, dated January 20, 2012; P5207, Revision 2, dated June 28, 2012; 

P5188, Revision 10, dated January 14, 2013; and P5189, Revision 8, dated March 26, 

2013. The ALS in these maintenance manuals lists the Mis for the associated propellers 

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and prescribe a seven-year calendar time limit interval for MI of propeller blades and 

hubs. 

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 incorporating a seven-year calendar time limit, 

between Mls of propeller blades and hubs, into the propeller maintenance schedule, 

within 45 days after the effective date ofthe AD. 

Differences Between the Proposed AD and the Service Information 

The updated maintenance manuals require that an MI of the blades and hubs be 

performed at the published flight hours or no later than seven years since the date since 

installation (DSI). The DSI will begin at initial installation after the most recent MI or 

initial installation after production. This proposed AD would require that the Hamilton 

Sunstrand propeller models, with an approved update to the maintenance manual ALS, 

have 45 days after the effective date of the AD to incorporate the seven-year calendar 

time limit. These models/manuals are: 14RF-9/P5186, 14RF-21/P5189, 14SF-5/P5188, 

14SF-7 /P5185, 14SF-11E/P5207, and 568F-1 /P5206. This proposed AD would also 

require that the Hamilton Sundstrand and Hamilton Standard propeller models, without 

approved updates to the maintenance manual ALS, incorporate the seven-year calendar 

time limit into the propeller maintenance schedule within one year after the effective date 

ofthe AD. These models/manuals are: Hamilton Standard 24PF/61-12-0l and 

6/5500/F/P5190, and Hamilton Sundstrand 14RF-19/P5199, 14RF-37/P5209, 14SF11/P5196, 14SF-15/P5197, 14SF-23/P5197, 14SF-17/P5198, 14SF-19/P5198, 247F4 
l!P4202, 247F-1E/P5204, 247F-3/P5205, 568F-l!P5214, 568F-5/P5203, and 568F7/P5211. 

Costs of Compliance 

We estimate that this proposed AD would affect about 1,044 propeller/hub 

combinations installed on airplanes of U.S. registry. We also estimate that it would take 

about 160 hours per propeller to perform one MI. 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 

$14,198,400. 

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. 

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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): 

Hamilton Standard Division and Hamilton Sundstrand Corporation: Docket 

No. FAA-2013-0262; Directorate Identifier 2013-NE-13-AD. 

(a) Comments Due Date 

We must receive comments by [INSERT DATE 60 DAYS AFTER DATE OF 

PUBLICATION IN THE FEDERAL REGISTER]. 

(b) Affected ADs 

None. 

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(c) Applicability 

This AD applies to Hamilton Standard Division 6/5500/F and 24PF and Hamilton 

Sundstrand Corporation 14RF, 14SF, 247F, and 568F series propellers. 

(d) Unsafe Condition 

This AD was prompted by the amount of corrosion detected during major 

inspections (MI). We are issuing this AD to prevent corrosion that could result in 

propeller failure and loss of airplane control. 

(e) Compliance 

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

(f) MI for Blades and Hubs That Have an Updated Airworthiness Limitations 

Section (ALS) 

For Hamilton Sundstrand Corporation propeller models 14RF-9, 14RF-21 , 14SF5, 14SF-7, 14SF-11E, and 568F-1, that have an approved update to the ALS, within 45 

days after the effective date of this AD, perform an MI on the blades and hubs no later 

than seven years since the date since installation (DSI). The DSI will begin at initial 

installation after the most recent MI or initial installation after production. Guidance on 

the inspections can be found in the applicable Hamilton Sundstrand Corporation 

models/manuals 14RF-9/P5186, revision 12, January 20, 2012; 14RF-21 /P5189, revision 

8, March 26, 2013; 14SF-5/P5188, revision 10, dated January 14, 2013 ; 14SF-7/P5185, 

revision 13, dated December 13, 2011 ; 14SF-11E/P5207, revision 2, dated June 28, 2012; 

and 568F-l!P5206 revision 9, dated February 22, 2013. 

(g) MI for Blades and Hubs That Do Not Have an Updated ALS 

For Hamilton Standard Division model6/5500/F and 24PF and Hamilton 

Sundstrand Corporation model14RF-19, 14RF-37, 14SF-11 , 14SF-15, 14SF-23, 14SF17, 14SF-19, 247F-1 , 247F-1E, 247F-3, 568F-1 , 568F-5, 568F-7 propellers, that do not 

have an approved update to the ALS, within one year after the effective date of this AD, 

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perform an MI on the blades and hubs no later than seven years since the DSI. The DSI 

will begin at initial installation after the most recent MI or initial installation after 

production. Guidance on the inspections can be found in the applicable models/manuals 

for Hamilton Standard Division 6/5500/F/P5190 and 24PF/61-12-01 , and Hamilton 

Sundstrand Corporation 14RF-19/P5199, 14RF-37/P5209, 14SF-11 /P5196, 14SF15/P5197, 14SF-23/P5197, 14SF-17/P5198, 14SF-19/P5198, 247F-1 /P4202, 247F1E/P5204, 247F-3/P5205, 568F-1/P5214, 568F-5/P5203, and 568F-7/P5211 propellers. 

(h) 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 3 9.19 to make your request. 

(i) Related Information 

(1) For more information about this AD, contact Michael Schwetz, Aerospace 

Engineer, Boston Aircraft Certification Office, FAA, 12 New England Executive Park, 

Burlington, MA 01803 ; phone: 781-238-7761 ; fax: 781-238-7170; email: 

michael.schwetz@faa. gov. 

(2) For service information identified in this AD, contact Hamilton Sundstrand 

Corporation, One Hamilton Road, Mail Stop 1A-3-C63, Windsor Locks, CT 06096-1010; 

fax : 860-654-5107, or Hamilton Standard Division, United Technologies Corporation, 

One Hamilton Road, Mail Stop 1A-3-C63, Windsor Locks, CT 06096-1010; phone: 877-

808-7575 ; fax: 860-660-0372; email: tech.solutions@hs.utc.com; Internet: 

http://myhs.hamiltonsundstrand.com. 

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

Directorate, 12 New England Executive Park, Burlington, MA 01803 . For information on 

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

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Issued in Burlington, Massachusetts, on May 17, 2013 

Colleen M. D' Alessandro, 

Assistant Manager, Emgine & Propeller Directorate, 

Aircraft Certification Service. 

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