60764 Federal Register / Vol. 72, No. 207 / Friday, October 26, 2007 / Rules and Regulations 

TABLE 1.—MATERIAL INCORPORATED BY REFERENCE

Service Bulletin No. Page Revision Date 

RB.211–72–AE753 ............................................................................................................... All ................ 1 .................. May 24, 2005. 

RB.211–72–AF197 ............................................................................................................... All ................ Original ........ December 20, 2006. 

Issued in Burlington, Massachusetts, on 

October 17, 2007. 

Peter A. White, 

Acting Manager, Engine and Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. E7–20913 Filed 10–25–07; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2006–25671; Airspace 

Docket No. 07–AWP–3] 

Modification of Class D Airspace; 

Castle Airport, Atwater, CA 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: This rule modifies Class D 

airspace at Castle Airport, Atwater, CA. 

This action lowers the ceiling of the 

Atwater, Castle Class D airspace to 

below 2.000 feet mean sea level (MSL), 

changes the southern boundary of the 

airspace and add an extension to the 

north. FAA is taking this action to 

provide controlled airspace for the 

safety of aircraft executing Standard 

Instrument Approach Procedures 

(SIAPs) and other Instrument Flight 

Rules (IFR) operations at Castle Airport. 

Except for editorial changes, this rule is 

the same as the Notice of Proposed Rule 

Making. 

DATES: Effective Date: 0901 UTC, 

February 14, 2008. The Director of the 

Federal Register approves this 

incorporation by reference action under 

Title 1, Code of Federal Regulations, 

part 51, subject to the annual revision of 

FAA Order 7400.9 and publication of 

conforming amendments. 

FOR FURTHER INFORMATION CONTACT: 

Larry Tonish, System Support 

Specialists, Federal Aviation 

Administration, Western Service Area, 

1601 Lind Avenue, SW., Renton, WA 

98057; telephone (425) 917–6766. 

SUPPLEMENTARY INFORMATION: 

History 

On May 29, 2007, the FAA proposed 

to amend Title 14 Code of the Federal 

Regulations part 71 (14 CFR part 71) to 

modify Class D airspace at Castle 

Airport, Atwater, CA (72 FR 29455). The 

proposal was the result of an informal 

meeting on April 26, 2007 with 

representatives from FAA, local and 

aviation communities at Atwater, CA. 

At that meeting, the participants 

discussed various airspace alternatives 

designed to accommodate IFR and 

Visual Flight Rules (VFR) operations in 

and out of nearby Merced Airport 

located 6 miles to the south of Castle 

Airport. The FAA, local and aviation 

communities agreed on an alternative 

that would reduce the ceiling of Class D 

airspace, modify the southern border, 

and add an extension on the north side 

of the Class D for safety of aircraft 

executing SIAP’s and other IFR 

operations at Castle Airport. Class D 

airspace will be effective during 

specified dates and times established in 

advance by a Notice to Airmen. The 

effective date and time will, thereafter, 

be published in the Airport/Facility 

Directory. 

Interested parties were invited to 

participate in this rule making 

proceeding by submitting written 

comments on the proposal to the FAA. 

Eight comments were received, 5 

positive and 3 negative. Of the three 

negative comments, one commenter 

suggested no change. The no change 

proposal was discussed at the April 26, 

2007 meeting, considered by the FAA 

and was not adopted because there were 

no landmarks to identify the common 

Class D boundary with Merced Airport. 

The remaining two commenters 

recommended that the Castle Class D 

airspace be truncated along Highway 99. 

This recommendation was also 

considered by the FAA and not adopted 

because it would not allow sufficient 

airspace to conduct terminal operations 

at Castle Airport. 

The Rule 

This amendment to 14 CFR part 71 

modifies Class D airspace at Castle 

Airport, Atwater, CA. An Airport Traffic 

Control Tower (ATCT) is being 

established at Castle Airport, Atwater, 

CA, which will meet criteria for Class D 

airspace. Class D airspace areas are 

published in Paragraph 5000 of FAA 

Order 7400.9R, dated August 15, 2007, 

and effective September 15, 2007, which 

is incorporated by reference in 14 CFR 

71.1. The Class D airspace designations 

listed in this document would be 

published subsequently in the Order. 

The FAA has determined that this 

regulation only involves an established 

body of technical regulations for which 

frequent and routine amendments are 

necessary to keep them operationally 

current. Therefore, this regulation: (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); and (3) 

does not warrant preparation of a 

regulatory evaluation as the anticipated 

impact is so minimal. Since this is a 

routine matter that will only affect air 

traffic procedures and air navigation, it 

is certified that this rule, when 

promulgated, will not have a significant 

economic impact on a substantial 

number of small entities under the 

criteria of the Regulatory Flexibility Act. 

This rulemaking is promulgated 

under the authority described in 

Subtitle VII, Part A, Subpart I, Section 

40103. The FAA is charged with 

prescribing regulations to assign the use 

of airspace necessary to ensure the 

safety of aircraft and the efficient use of 

airspace. This regulation is within the 

scope of that authority as it would 

provide for the safety of aircraft 

operations at Castle airport. 

List of Subjects in 14 CFR Part 71 

Airspace, Incorporation by reference, 

Navigation (air). 

Adoption of the Amendment 

■ In consideration of the foregoing, the 

Federal Aviation Administration 

amends 14 CFR part 71 as follows: 

PART 71—DESIGNATION OF CLASS A, 

CLASS B, CLASS C, CLASS D, AND 

CLASS E AIRSPACE AREAS; ROUTES; 

AND REPORTING POINTS 

■ 1. The authority citation for 14 CFR 

part 71 continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40103, 40113, 

40120; E.O. 10854, 24 FR 9565, 3 CFR, 1959–

1963 Comp., p. 389. 

§ 71.1 [Amended] 

■ 2. The incorporation by reference in 

14 CFR 71.1 of the Federal Aviation 

Administration Order 7400.9R, Airspace 

Designations and Reporting Points, 

dated August 15, 2007, and effective 


rmajette on PROD1PC63 with RULES
Federal Register / Vol. 72, No. 207 / Friday, October 26, 2007 / Rules and Regulations 60765 

September 15, 2007, is amended as 

follows: 

Paragraph 5000 Class D Airspace area. 

* * * * * 

AWP CA D Castle Airport, Atwater, CA 

[Modified] 

Castle Airport, Atwater, CA 

(Lat. 37°22′50′′ N., long. 120°34′05′′ W.) 

That airspace extending upward from the 

surface to but not including 2,000 feet MSL 

beginning at lat. 37°20′22′′ N., long. 

120°38′49′′ W., and extending clockwise 

around the 4.5-nautical mile radius of the 

Castle Airport to lat. 37°20′02′′ N., long. 

120°29′39′′ W., thence to the point of 

beginning; and within 1.9 miles each side of 

the El Nido VORTAC 320° radial from the 

4.5-nautical mile radius to 17.6 miles from 

the El Nido VORTAC. This Class D airspace 

area is effective during the specific dates and 

times established in advance by a Notice to 

Airmen. The effective dates and times will 

thereafter be continuously published in the 

Airport/Facility Directory. 

* * * * * 

Issued in Seattle, Washington, on 

September 10, 2007. 

Clark Desing, 

Manager, System Support Group, Western 

Service Center. 

[FR Doc. 07–5262 Filed 10–25–07; 8:45 am] 

BILLING CODE 4910–13–M 

CONSUMER PRODUCT SAFETY 

COMMISSION 

16 CFR Parts 1630 and 1631 

Technical Amendment to the 

Flammability Standards for Carpets 

and Rugs 

AGENCY: Consumer Product Safety 

Commission. 

ACTION: Final amendments. 

SUMMARY: The Commission is amending 

the flammability standards for carpets 

and rugs to remove the reference to Eli 

Lilly Company Product No. 1588 in 

Catalog No. 79, December 1, 1969, as the 

standard ignition source and provide a 

technical specification defining the 

ignition source. The specification for the 

standard ignition source is a timed 

burning tablet, consisting of essentially 

pure methenamine, with a nominal heat 

of combustion value of 7180 calories/ 

gram, a mass of 150 mg +/¥5 mg, flat, 

and a nominal diameter of 6 mm. The 

amendment has an immediate effective 

date. 

DATES: The amendment is effective 

October 26, 2007. 

FOR FURTHER INFORMATION CONTACT: 

Patricia K. Adair, Project Manager, 

Directorate for Engineering Sciences, 

Consumer Product Safety Commission, 

Washington, DC 20207; telephone (301) 

504–7536. 

SUPPLEMENTARY INFORMATION: 

A. Background 

The standards for surface 

flammability of carpets and rugs appear 

at 16 CFR parts 1630 and 1631. They 

were codified and published in 1975, 40 

FR 59931 and 59935 (December 30, 

1975). The standards were originally 

issued in 1970 by the Department of 

Commerce under the authority of the 

Flammable Fabrics Act (FFA). Subpart 

A of 16 CFR parts 1630 and 1631 set 

forth the standards. Subpart B contains 

the implementing regulations of the 

standards. Subpart C contains 

alternative washing procedures for hide 

carpets and rugs and wool flotaki 

carpets and rugs. Subpart D of 16 CFR 

part 1630 contains the staff 

interpretations and policies. 

16 CFR parts 1630 and 1631 establish 

minimum acceptance criteria for the 

surface flammability of carpets and rugs 

when exposed to a standard small 

source of ignition, a burning 

methenamine tablet, under prescribed 

conditions (the ‘‘pill test’’). These 

standards reduce the risks of death, 

personal injury, and property damage 

associated with fires that result from the 

surface ignition of carpets and rugs. 

Both standards require a timed 

burning tablet as the standard ignition 

source for flammability performance 

testing. The standards define the 

ignition source at 1630.1(f) and 1631.1(f) 

as a methenamine tablet, weighing 

approximately 0.149 grams (2.30 grains), 

sold as Product No. 1588 in Catalog No. 

79, December 1, 1969 by the Eli Lilly 

Company, or an equal tablet. 

In April 2002, Commission staff 

learned that the Eli Lilly Company was 

no longer producing the methenamine 

tablets specified in the carpet and rug 

standards. Although the standards allow 

for the use of ‘‘an equal’’ methenamine 

tablet and give parameters for chemical 

composition and weight of the tablet, 

they do not provide any guidance on 

determining whether tablets from 

alternative sources are ‘‘equal’’ to those 

manufactured by the Eli Lilly Company. 

In July 2003, CPSC staff met with 

representatives of the Carpet and Rug 

Institute (CRI) to discuss evaluation of 

alternative methenamine tablets for use 

in 16 CFR part 1630 and Part 1631. CRI 

members were experiencing differing 

test results using the old Eli Lilly tablets 

and currently available tablets. CRI 

members had begun to study the various 

characteristics of the current tablets. In 

one case, about 50% of one 

manufacturer’s tablets were found 

broken in the bottle, with others 

breaking later. This problem was 

attributed to the tablets having a domed 

top. The problem has since been 

corrected with a flat tablet. 

CRI urged the Commission to specify 

clearly the characteristics of the ‘‘equal’’

tablets that should be used for 

determining compliance to the carpet 

and rug standards. In an effort to make 

such a determination, the Commission 

staff conducted a comparison study to 

evaluate the weight, chemical 

composition, and combustion 

characteristics of presently available 

brands of methenamine tablets relative 

to each other and those produced by the 

Eli Lilly Company. The outcome of the 

study indicated that tablets consisting of 

essentially pure methenamine, having a 

heat of combustion value of 

approximately 7180 calories/gram and 

weighing approximately 0.149 grams 

may be considered equivalent to the 

tablets produced by the Eli Lilly 

Company and referenced in the 

regulation. 

On July 29, 2004, the Commission’s 

Office of Compliance issued a letter to 

industry in response to inquiries 

received by the CPSC staff regarding the 

equivalency of methenamine tablets 

formerly manufactured by the Eli Lilly 

Company and similar tablets currently 

produced by other manufacturers. The 

letter stated that the Commission staff 

determined that tablets consisting of 

essentially pure methenamine and 

weighing approximately 0.149 grams 

may be considered equivalent to the 

tablets formerly produced by the Eli 

Lilly Company. Therefore, tablets 

meeting these criteria may be used for 

purposes of determining conformance 

with the carpet and rug standards. 

B. Amending the Flammability 

Standards 

1. Outcome of Commission Testing 

As mentioned above, the Eli Lilly 

Company is no longer producing the 

methenamine tablets specified in the 

carpet and rug standards. The standards 

allow for the use of ‘‘an equal’’

methenamine tablet and give parameters 

for chemical composition and weight of 

the tablet, but they do not provide any 

guidance on determining whether 

tablets from the alternative sources are 

‘‘equal’’ to those manufactured by the 

Eli Lilly Company. The Commission 

staff conducted a comparison study to 

evaluate the weight, chemical 

composition, and combustion 

characteristics of presently available 

brands of methenamine tablets relative 

to each other and those produced by the 

Eli Lilly Company. The outcome of the 

Commission’s comparative study 


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