### 31888 Federal Register / Vol. 79, No. 106 / Tuesday, June 3, 2014 / Proposed Rules

covers, however, need not be more impact resistant than the contiguous tank structure,’’ highlighting the assumption that the wing structure is more capable of resisting tire impact debris than fuel tank access covers.

In order to maintain the level of safety envisioned by 14 CFR 25.963(e), these special conditions propose a standard for resistance to potential tire debris impacts to the contiguous wing surfaces and require consideration of possible secondary effects of a tire impact, such as the induced pressure wave that was a factor in the Concorde accident. It takes into account that new construction methods and materials will not necessarily yield debris resistance that has historically been shown as adequate. The proposed standard is based on the defined tire impact areas and tire fragment characteristics.

In addition, despite practical design considerations, some uncommon debris larger than that defined in paragraph 2 may cause a fuel leak within the defined area, so paragraph 3 of these proposed special conditions also takes into consideration possible leakage paths. Fuel tank surfaces of typical transport airplanes have thick aluminum construction in the tire debris impact areas that is tolerant to tire debris larger than that defined in paragraph 2 of these special conditions. Consideration of leaks caused by larger tire fragments is needed to ensure that an adequate level of safety is provided.

These proposed special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards. Applicability

As discussed above, these special conditions are applicable to the BD– 500–1A10 and BD–500–1A11 (CSeries) airplanes. Should Bombardier Aerospace apply at a later date for a change to the type certificate to include another model incorporating the same novel or unusual design feature, the special conditions would apply to that model as well.

Conclusion

This action affects only certain novel or unusual design features on one model series of airplanes. It is not a rule of general applicability. List of Subjects in 14 CFR Part 25

Aircraft, Aviation safety, Reporting and recordkeeping requirements.

The authority citation for these special conditions is as follows: Authority: 49 U.S.C. 106(g), 40113, 44701,
44702, 44704. The Proposed Special Conditions

Accordingly, the Federal Aviation Administration (FAA) proposes the following special conditions as part of the type certification basis for Bombardier Aerospace BD–500–1A10 and BD–500–1A11 (CSeries) airplanes.
Tire Debris Impacts to Fuel Tanks

1. Impacts by tire debris to any fuel tank or fuel system component located within 30 degrees to either side of wheel rotational planes may not result in penetration or otherwise induce fuel tank deformation, rupture (for example, through propagation of pressure waves), or cracking sufficient to allow a hazardous fuel leak. A hazardous fuel leak results if debris impact to a fuel tank surface causes a—

a. Running leak, b. Dripping leak, or c. Leak that, 15 minutes after wiping dry, results in a wetted airplane surface exceeding 6 inches in length or diameter.

The leak must be evaluated under maximum fuel head pressure.

2. Compliance with paragraph 1 must be shown by analysis or tests assuming all of the following:

a. The tire debris fragment size is 1 percent of the tire mass.

b. The tire debris fragment is propelled at a tangential speed that could be attained by a tire tread at the airplane flight manual airplane rotational speed (VR at maximum gross weight).

c. The tire debris fragment load is distributed over an area on the fuel tank surface equal to 1 1 ⁄ 2 percent of the total tire tread area.

3. Fuel leaks caused by impact from tire debris larger than that specified in paragraph 2, from any portion of a fuel tank or fuel system component located within the tire debris impact area defined in paragraph 1, may not result in hazardous quantities of fuel entering any of the following areas of the airplane:

a. Engine inlet, b. Auxiliary power unit inlet, or
c. Cabin air inlet. This must be shown by test or analysis, or a combination of both, for each approved engine forward thrust condition and each approved reverse thrust condition. Issued in Renton, Washington, on May 15,
2014. Michael Kaszycki, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service.
[FR Doc. 2014–12691 Filed 6–2–14; 8:45 am]

**BILLING CODE 4910–13–P**

**DEPARTMENT OF TRANSPORTATION**

**Federal Aviation Administration**

**14 CFR Part 39**

**[Docket No. FAA–2014–0338; Directorate Identifier 2014–CE–010–AD]** 

**RIN 2120–AA64**

**Airworthiness Directives; Piper Aircraft, Inc. Airplanes** 

**AGENCY :**  Federal Aviation Administration (FAA), DOT.

**ACTION :**  Notice of proposed rulemaking (NPRM).

**SUMMARY :**  We propose to adopt a new airworthiness directive (AD) for certain Piper Aircraft, Inc. Model PA–31–350 airplanes. This proposed AD was prompted by a report of an engine fire caused by a leak in the fuel pump inlet hose. This proposed AD would require inspecting the fuel hose assembly and the turbocharger support assembly for proper clearance between them, inspecting each assembly for any sign of damage, and making any necessary repairs or replacements. We are proposing this AD to correct the unsafe condition on these products.

**DATES :**  We must receive comments on this proposed AD by July 18, 2014.

**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 Piper Aircraft, Inc., 2926 Piper Drive, Vero Beach, Florida 32960; telephone: (772) 567–4361; fax: (772) 978–6573; Internet: www.piper.com/home/pages/ Publications.cfm . You may review copies of the referenced service


### 31889 Federal Register / Vol. 79, No. 106 / Tuesday, June 3, 2014 / Proposed Rules

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. 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–2014– 0338; 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 :**  Gary Wechsler, Aerospace Engineer, FAA, Atlanta Aircraft Certification Office, 1701 Columbia Avenue, College Park, Georgia 30337; telephone: (404) 474– 5575; fax: (404) 474–5606; email: gary.wechsler@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– 2014–0338; Directorate Identifier 2014– CE–010–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 a report of an engine fire on a Piper Aircraft, Inc. (Piper) Model PA–31–350 airplane. Investigation revealed that the fire was caused by a leak in the fuel pump inlet hose that resulted from repeated contact with an adjacent turbocharger support assembly caused by inadequate clearance between the two assemblies.

This condition, if not corrected, could result in damage to the fuel inlet hose assembly, which could cause the fuel pump inlet hose to fail and leak fuel in the engine compartment. This condition could also cause damage to the turbocharger support assembly, which could require the turbocharger support assembly to be repaired or replaced.

Relevant Service Information

We reviewed Piper Aircraft, Inc. Service Bulletin No. 1257, dated February 25, 2014. The service information describes procedures for the following: —Inspecting for a minimum 3 ⁄ 16 -inch clearance between the fuel hose assembly and the turbocharger support assembly and making any necessary adjustments. —Inspecting the fuel hose assembly for

any signs of damage and, if necessary, replacing with a serviceable part. —Inspecting the turbocharger support

assembly for any signs of damage and, if necessary, repairing or replacing with a serviceable part. —Performing an engine run-up to check

for any leaks.

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 accomplishing the actions specified in the service information described previously. Differences Between the Proposed AD and the Service Information

There are differences between the compliance times for the corrective actions in this proposed AD and those in Piper Aircraft, Inc. Service Bulletin No. 1257, dated February 25, 2014.

We based the compliance times in this proposed AD on risk analysis and cost impact to operators. There has only been one event of the reported incident in the operational history of Piper Model PA–31–350 airplanes. Cost was also a strong consideration due to the age of the fleet and the number of airplanes still in service.

The one-time inspection required in this proposed AD is very inexpensive and requires minimal time to accomplish. It is expected that almost all airplanes in service can be cleared with a single inspection, and no additional actions or costs would be incurred by the vast majority of the fleet.

We determined that a single inspection with any necessary corrective actions is an adequate terminating action for the unsafe condition. The risk related to future maintenance on the fuel line would be mitigated by the related service information and awareness from this proposed AD. Costs of Compliance

We estimate that this proposed AD affects 773 airplanes of U.S. registry.

We estimate the following costs to comply with this proposed AD:



### E STIMATED 

### C OSTS

Action Labor cost Parts cost Cost per product Cost on U.S. operators

Inspect for proper clearance between the fuel

hose assembly and the turbocharger support assembly. 1 work-hour × $85 per hour = $85 ................. N/A $85 $65,705

Inspect the fuel hose assembly for evidence

of leaking, cracking, chafing, and any other sign of damage. .5 work-hour × $85 per hour = $42.50 ........... N/A $42.50 32,852.50

Inspect the turbocharger support assembly

for evidence of chafing and any other sign of damage. .5 work-hour × $85 per hour = $42.50 ........... N/A $42.50 32,852.50

We estimate the following costs to do any necessary follow-on actions that would be required based on the results of the proposed inspection. We have no way of determining the number of


### 31890 Federal Register / Vol. 79, No. 106 / Tuesday, June 3, 2014 / Proposed Rules

airplanes that might need these corrective actions.



### O N 

### -C ONDITION 

### C OSTS

Action Labor cost Parts cost Cost per product

Adjust for proper clearance between the fuel hose assembly and the turbocharger support assembly. .5 work-hour × $85 per hour = $42.50 ......................... N/A $42.50

Replace fuel hose assembly ........................................ 1 work-hour × $85 per hour = $85 ............................... $1,068 1,153 Replace turbocharger support assembly ..................... 24 work-hours × $85 per hour = $2,040 ...................... $12,874 14,914 Engine run-up/leak check ............................................. 1 work-hour × $85 = $85 (.5 work hour per engine) .... N/A 85

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 proposed 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, 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):
Piper Aircraft, Inc.: Docket No. FAA–2014– 0338; Directorate Identifier 2014–CE– 010–AD.
(a) Comments Due Date

We must receive comments by July 18,
2014.
(b) Affected ADs

None. (c) Applicability

This AD applies to Piper Aircraft, Inc. Model PA–31–350 airplanes, serial numbers 31–5001 through 31–5004, 31–7305005 through 31–8452024, and 31–8253001 through 31–8553002, certificated in any category. (d) Subject

Joint Aircraft System Component (JASC)/ Air Transport Association (ATA) of America Code 73: Engine Fuel and Control.

(e) Unsafe Condition

This AD was prompted by a report of an engine fire caused by a leak in the fuel pump inlet hose. We are issuing this AD to correct the unsafe condition on these products.
(f) Compliance

Comply with this AD within the compliance times specified in paragraphs (g)(1) through (j)(2) of this AD, unless already done. (g) Ensure Proper Clearance Between the Fuel Hose Assembly and the Turbocharger Support Assembly

(1) Within the next 60 hours time-inservice (TIS) after the effective date of this AD or within the next 6 months after the effective date of this AD, whichever occurs first, inspect to determine the clearance between the fuel hose assembly, Piper part number (P/N) 39995–034, and the turbocharger support assembly, Lycoming P/ N LW–18302. There should be a minimum

3 ⁄ 16 -inch clearance. Do the inspection following the INSTRUCTIONS section of Piper Aircraft, Inc. Service Bulletin No. 1257, dated February 25, 2014.

(2) Before further flight after the inspection required in paragraph (g)(1) of this AD, if the measured clearance is less than 3/16-inch, make all necessary adjustments following the INSTRUCTIONS section of Piper Aircraft, Inc. Service Bulletin No. 1257, dated February 25, 2014, to make the clearance a minimum of 3/16-inch.
(h) Inspect the Fuel Hose Assembly and Replace if Necessary

(1) Within the next 60 hours TIS after the effective date of this AD or within the next 6 months after the effective date of this AD, whichever occurs first, inspect P/N 39995– 034 for evidence of leaking, cracking, chafing, and any other sign of damage following the INSTRUCTIONS section of Piper Aircraft, Inc. Service Bulletin No. 1257, dated February 25, 2014.

(2) Before further flight after the inspection required in paragraph (h)(1) of this AD, if any evidence of leaking, cracking, chafing, or any other sign of damage is found, replace P/N 39995–034 with a serviceable part following the INSTRUCTIONS section of Piper Aircraft, Inc. Service Bulletin No. 1257, dated February 25, 2014.
(i) Inspect the Turbocharger Support Assembly and Replace if Necessary

(1) Within the next 60 hours TIS after the effective date of this AD or within the next 6 months after the effective date of this AD, whichever occurs first, inspect P/N LW– 18302 for evidence of chafing and any other signs of damage following the INSTRUCTIONS section of Piper Aircraft, Inc. Service Bulletin No. 1257, dated February 25, 2014.

(2) Before further flight after the inspection required in paragraph (i)(1) of this AD, if any evidence of chafing or any other sign of damage is found, replace P/N LW–18302 with a serviceable part.


### 31891 Federal Register / Vol. 79, No. 106 / Tuesday, June 3, 2014 / Proposed Rules

1 Federal Trade Commission: Automotive Fuel Ratings, Certification and Posting: Notice of Proposed Rulemaking, 79 FR 18850 (Apr. 4, 2014). (j) Engine Run-Up

(1) If any fuel line component was adjusted or replaced during any actions required in paragraphs (g)(1) through (i)(2) of this AD,before further flight, perform an engine runup on the ground to check for leaks following the INSTRUCTIONS section of Piper Aircraft, Inc. Service Bulletin No. 1257, dated February 25, 2014.

(2) If any leaks are found during the engine run-up required in paragraph (j)(1) of this AD, emanating from any fuel line component adjusted, repaired, or replaced during any actions required in paragraphs (g)(1) through (i)(2) of this AD, before further flight, take all necessary corrective actions following the INSTRUCTIONS section of Piper Aircraft, Inc. Service Bulletin No. 1257, dated February 25, 2014.
(k) Alternative Methods of Compliance (AMOCs)

(1) The Manager, Atlanta Aircraft Certification Office (ACO), FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the ACO, send it to the attention of the person identified in the Related Information section of this AD.

(2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/ certificate holding district office.
(l) Related Information

(1) For more information about this AD, contact Gary Wechsler, Aerospace Engineer, FAA, Atlanta ACO, 1701 Columbia Avenue, College Park, Georgia 30337; telephone: (404) 474–5575; fax: (404) 474–5606; email: gary.wechsler@faa.gov.

(2) For service information identified in this AD, contact Piper Aircraft, Inc., 926 Piper Drive, Vero Beach, Florida 32960; telephone: (772) 567–4361; fax: (772) 978– 6573; Internet: www.piper.com/home/pages/ Publications.cfm . You may review copies of the 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 May 23, 2014. Earl Lawrence, Manager, Small Airplane Directorate, Aircraft Certification Service.
[FR Doc. 2014–12780 Filed 6–2–14; 8:45 am]

**BILLING CODE 4910–13–P**

**FEDERAL TRADE COMMISSION**

**16 CFR Part 306**

**Automotive Fuel Ratings, Certification, and Posting** 

**AGENCY :**  Federal Trade Commission (‘‘FTC’’ or ‘‘Commission’’). **ACTION :**  Extension of comment period.

**SUMMARY :**  In an April 4, 2014 Federal Register Notice, the Federal Trade Commission (‘‘Commission’’) proposed amending its Fuel Rating Rule to provide revised rating, certification, and labeling requirements for blends of gasoline and more than 10 percent ethanol (‘‘ethanol blends’’) and an additional octane rating method for gasoline. The NPRM requested comments on the proposed amendments, and stated that comments must be received on or before June 2, 2014. In response to a request to extend the comment period received on May 20, 2014, the Commission is extending the comment period from June 2, 2014 to July 2, 2014.

**DATES :**  Comments addressing the Automotive Fuel Ratings, Certification, and Posting NPRM must be received on or before July 2, 2014.

**FOR FURTHER INFORMATION CONTACT :**  Miriam R. Lederer, (202) 326– 2975, R. Michael Waller, (202) 326–2902, Division of Enforcement, Federal Trade Commission, 600 Pennsylvania Avenue NW., Washington, DC 20580.

**ADDRESSES :**  Interested parties may file a comment online or on paper, by following the instructions in the Request for Comment part of the

**SUPPLEMENTARY INFORMATION** section below. Write ‘‘Fuel Rating Rule Review, 16 CFR Part 306, Project No. R811005’’ on your comment, and file your comment online at https:// ftcpublic.commentworks.com/ftc/ autofuelratingscertnprm by following the instructions on the web-based form. If you prefer to file your comment on paper, mail your comment to the following address: Federal Trade Commission, Office of the Secretary, 600 Pennsylvania Avenue NW., Suite CC–5610 (Annex N), Washington, DC 20580, or deliver your comment to the following address: Federal Trade Commission, Office of the Secretary, Constitution Center, 400 7th Street SW., 5th Floor, Suite 5610 (Annex N), Washington, DC 20024.

**SUPPLEMENTARY INFORMATION :**  The Commission is extending the comment period for its NPRM on proposed amendments to the Fuel Rating Rule to July 2, 2014. The Commission’s NPRM 1 proposed amendments in two areas. First, the NPRM proposed rating, certification, and labeling requirements for blends of gasoline with more than ten percent ethanol. Second, it proposed an additional octane rating method that uses infrared sensor technology. The NPRM’s comment period was to end on June 2, 2014.

In a May 20, 2014 letter, the following stakeholders requested that the Commission extend the comment period by 30 days: Auto Alliance, Global Auto Manufacturers, Outdoor Power Equipment Institute, and National Marine Manufacturers Association. The Commission is extending the deadline as requested. The Commission recognizes that its proposal raises significant issues and believes that extending the comment period will facilitate a more complete record.

You can file a comment online or on paper. For the Commission to consider your comment, we must receive it on or before July 2, 2014. Write ‘‘Fuel Rating Rule Review, 16 CFR Part 306, Project No. 811005’’ on your comment. Your comment—including your name and your state—will be placed on the public record of this proceeding, including, to the extent practicable, on the public Commission Web site, at http:// www.ftc.gov/os/publiccomments.shtm

. As a matter of discretion, the Commission tries to remove individuals’ home contact information from comments before placing them on the Commission Web site.

Because your comment will be made public, you are solely responsible for making sure that your comment doesn’t include any sensitive personal information, such as anyone’s Social Security number, date of birth, driver’s license number or other state identification number or foreign country equivalent, passport number, financial account number, or credit or debit card number. You are also solely responsible for making sure that your comment does not include any sensitive health information, such as medical records or other individually identifiable health information. In addition, do not include any ‘‘[t]rade secret or any commercial or financial information . . . which is privileged or confidential,’’ as provided in Section 6(f) of the FTC Act, 15 U.S.C. 46(f), and FTC Rule 4.10(a)(2), 16 CFR 4.10(a)(2). In particular, do not include competitively sensitive information such as costs, sales statistics, inventories, formulas, patterns, devices, manufacturing processes, or customer names. If you want the Commission to give your comment confidential treatment, you must file it in paper form, with a request for confidential treatment, and you have to follow the procedure explained in FTC Rule 4.9(c), 16 CFR 4.9(c). Your comment will be kept confidential only if the FTC General Counsel grants your request in