45052 Federal Register / Vol. 78, No. 144 / Friday, July 26, 2013 / Rules and Regulations 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 35 

[Docket No. FAA–2010–0940–0001; Amdt. 

No. 35–9A] 

RIN 2120–AJ88 

Critical Parts for Airplane Propellers; 

Correction 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Correcting amendment. 

SUMMARY: The FAA is correcting a final 

rule published on January 18, 2013 (78 

FR 4038). In that rule, the FAA 

established airworthiness standards for 

airplane propellers. That action required 

a safety analysis to identify a propeller 

critical part. Manufacturers would 

identify propeller critical parts, and 

establish engineering, manufacturing, 

and maintenance processes for propeller 

critical parts. An unintentional error 

was introduced in § 35.15 when we 

revised paragraph (d). We did not 

intend to revise paragraph (d). This 

correction will add paragraph (d) to the 

end of paragraph (c), and restore the 

former paragraph (d). 

DATES: Effective July 26, 2013. 

FOR FURTHER INFORMATION CONTACT: For 

technical questions concerning this 

action, contact Jay Turnberg, Engine and 

Propeller Directorate Standards Staff, 

ANE–111, Federal Aviation 

Administration, 12 New England 

Executive Park, Burlington, 

Massachusetts, 01803–5299; telephone 

(781) 238–7116; facsimile (781) 238– 

7199, email: jay.turnberg@faa.gov. For 

legal questions concerning this action, 

contact Vincent Bennett, FAA Office of 

the Regional Counsel, ANE–7, Federal 

Aviation Administration, 12 New 

England Executive Park, Burlington, 

Massachusetts, 01803–5299; telephone 

(781) 238–7044; facsimile (781) 238– 

7055, email: vincent.bennett@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

On January 18, 2013, the FAA 

published a final rule titled, ‘‘Critical 

Parts for Airplane Propellers’’ (78 FR 

4038). 

In that final rule the FAA revised the 

regulation to require a safety analysis to 

identify a propeller critical part and 

require that critical parts meet the 

prescribed integrity specifications of 

§ 35.16, Propeller critical parts. 

However, in amending § 35.15 we 

inadvertently revised paragraph (d), 

when we added the new requirements. 

This was not our intention. This 

correction will add paragraph (d) to the 

end of paragraph (c), and restore the 

former paragraph (d). 

List of Subjects in 14 CFR Part 35 

Air transportation, Aircraft, Aviation 

safety, Safety. 

The Correcting Amendment 

In consideration of the foregoing, the 

Federal Aviation Administration 

amends chapter I of title 14, Code of 

Federal Regulations as follows: 

PART 35—AIRWORTHINESS 

STANDARDS: PROPELLERS 

■ 1. The authority citation for part 35 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701– 

44702, 44704. 

■ 2. Amend § 35.15 by revising 

paragraphs (c) and (d) to read as follows: 

§ 35.15 Safety analysis. 

* * * * * 

(c) The primary failures of certain 

single propeller elements (for example, 

blades) cannot be sensibly estimated in 

numerical terms. If the failure of such 

elements is likely to result in hazardous 

propeller effects, those elements must 

be identified as propeller critical parts. 

For propeller critical parts, applicants 

must meet the prescribed integrity 

specifications of § 35.16. These 

instances must be stated in the safety 

analysis. 

(d) If reliance is placed on a safety 

system to prevent a failure progressing 

to hazardous propeller effects, the 

possibility of a safety system failure in 

combination with a basic propeller 

failure must be included in the analysis. 

Such a safety system may include safety 

devices, instrumentation, early warning 

devices, maintenance checks, and other 

similar equipment or procedures. If 

items of the safety system are outside 

the control of the propeller 

manufacturer, the assumptions of the 

safety analysis with respect to the 

reliability of these parts must be clearly 

stated in the analysis and identified in 

the propeller installation and operation 

instructions required under § 35.3. 

* * * * * 

Issued under authority provided by 49 

U.S.C. 106(f), 44701(a), and 44703 in 

Washington, DC, on July 19, 2013. 

Lirio Liu, 

Director, Office of Rulemaking. 

[FR Doc. 2013–17931 Filed 7–25–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2013–0130; Directorate 

Identifier 2013–NE–07–AD; Amendment 39– 

17520; AD 2013–15–04] 

RIN 2120–AA64 

Airworthiness Directives; Hartzell 

Propeller, Inc. Propellers 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Hartzell Propeller, Inc. propeller models 

HC–(1,D)2(X,V,MV)20–7, HC– 

(1,D)2(X,V,MV)20–8, and HC– 

(1,D)3(X,V,MV)20–8. This AD was 

prompted by failures of the propeller 

hydraulic bladder diaphragm and 

resulting engine oil leak. This AD 

requires replacement of the propeller 

hydraulic bladder diaphragm. We are 

issuing this AD to prevent propeller 

hydraulic bladder diaphragm rupture, 

loss of engine oil, damage to the engine, 

and loss of the airplane. 

DATES: This AD is effective August 30, 

2013. 

ADDRESSES: For service information 

identified in this AD, contact Hartzell 

Propeller, Inc., 1 Propeller Place, Piqua, 

OH 45356; phone: 937–778–4397; fax: 

937–778–4391; email: techsupport@

hartzellprop.com. You may view this 

service information at the FAA, 12 New 

England Executive Park, Burlington, 

MA. For information on the availability 

of this material at the FAA, call 781– 

238–7125. 

The Docket Operations office is 

located at Docket 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. 

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 AD, the regulatory 

evaluation, any comments received, and 

other information. The address for the 

Docket Office (phone: 800–647–5527) 

provided in the ADDRESSES section. 

Comments will be available in the AD 

docket shortly after receipt. 

FOR FURTHER INFORMATION CONTACT: 

Mark Grace, Aerospace Engineer, 


tkelley on DSK3SPTVN1PROD with RULES
Federal Register / Vol. 78, No. 144 / Friday, July 26, 2013 / Rules and Regulations 45053 

Chicago Aircraft Certification Office, 

FAA, Propulsion Branch, 2300 E. Devon 

Avenue, Des Planes, IL 60018; phone: 

847–294–7377; fax: 847–294–7834; 

email: mark.grace@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an AD that would 

apply to the specified products. The 

NPRM published in the Federal 

Register on March 26, 2013 (78 FR 

18255). The NPRM proposed to require 

replacement of the propeller hydraulic 

bladder diaphragm with a redesigned 

bladder diaphragm that includes a tab, 

visible after installation, which contains 

the bladder diaphragm batch/lot 

number. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

have considered the comment received. 

Hartzell Propeller, Inc. supports the 

NPRM (78 FR 18255, dated March 26, 

2013). 

Conclusion 

We reviewed the relevant data, 

considered the comments received, and 

determined that air safety and the 

public interest require adopting this AD 

as proposed. 

Costs of Compliance 

We estimate that this AD will affect 

about 400 propellers installed on 

airplanes of U.S. registry. We also 

estimate that it will take about 4 hours 

per propeller to replace the bladder 

diaphragm. The average labor rate is $85 

per hour. We estimate parts costs at $53 

per engine. Based on these figures, we 

estimate the cost of this AD on U.S. 

operators to be $157,200. Our cost 

estimate is exclusive of possible 

warranty coverage. 

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 

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 that this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Is not a ‘‘significant rule’’ under 

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): 

2013–15–04 Hartzell Propeller, Inc.: 

Amendment 39–17520; Docket No. 

FAA–2013–0130; Directorate Identifier 

2013–NE–07–AD. 

(a) Effective Date 

This AD is effective August 30, 2013. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Hartzell Propeller, Inc. 

propeller models HC–(1,D)2(X,V,MV)20–7, 

HC–(1,D)2(X,V,MV)20–8, and HC– 

(1,D)3(X,V,MV)20–8 with a propeller 

hydraulic bladder diaphragm, part number 

(P/N) B–119–2, without tab, installed. 

(d) Unsafe Condition 

This AD was prompted by failures of the 

propeller hydraulic bladder diaphragm and 

resulting engine oil leak. We are issuing this 

AD to prevent propeller hydraulic bladder 

diaphragm rupture, loss of engine oil, 

damage to the engine, and loss of the 

airplane. 

(e) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(f) Bladder Diaphragm Replacement 

(1) Within 12 months after the effective 

date of this AD, remove from service the 

propeller hydraulic bladder diaphragm, P/N 

B–119–2, without tab. 

(2) Install a redesigned propeller hydraulic 

bladder diaphragm, P/N B–119–2, with tab. 

The bladder diaphragm, eligible for 

installation, is identified by a tab with a 

batch/lot number. The tab is visible after 

installation and confirms the installation of 

the proper redesigned propeller hydraulic 

bladder diaphragm, P/N B–119–2, with tab, 

in the Hartzell propeller assembly. 

(g) Installation Prohibition 

After the effective date of this AD, do not 

install into any engine any hydraulic bladder 

diaphragm, P/N B–119–2, that is without tab. 

(h) Alternative Methods of Compliance 

(AMOCs) 

The Manager, Chicago Aircraft 

Certification Office, FAA, may approve 

AMOCs for this AD. Use the procedures 

found in 14 CFR 39.19 to make your request. 

(i) Related Information 

(1) For more information about this AD, 

contact Mark Grace, Aerospace Engineer, 

Chicago Aircraft Certification Office, FAA, 

Propulsion Branch, 2300 E. Devon Avenue, 

Des Planes, IL 60018; phone: 847–294–7377; 

fax: 847–294–7834; email: 

mark.grace@faa.gov. 

(2) Refer to Hartzell Alert Service Bulletin 

No. HC–ASB–61–338 for related information. 

(3) For service information identified in 

this AD, contact Hartzell Propeller Inc., 1 

Propeller Place, Piqua, OH 45356–2634; 

phone: 937–778–4379; fax: 937–778–4391; 

email: techsupport@hartzellprop.com. You 

may view this service information at the 

FAA, 12 New England Executive Park, 

Burlington, MA. For information on the 

availability of this material at the FAA, call 

781–238–7125. 

(j) Material Incorporated by Reference 

None. 

Issued in Burlington, Massachusetts, on 

July 16, 2013. 

Colleen M. D’Alessandro, 

Assistant Manager, Engine & Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. 2013–17664 Filed 7–25–13; 8:45 am] 

BILLING CODE 4910–13–P 


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