### 40596 Federal Register / Vol. 76, No. 132 / Monday, July 11, 2011 / Rules and Regulations

finds that the test time associated with the continuous OEI rating is an appropriate baseline to define additional requirements for this new normal use 30- minute AEO rating. Therefore, engine durability using this rating must be demonstrated over and above the takeoff rating and other normal use ratings included in the rating structure. No changes to the special conditions have been made in this regard.

The commenter also states that the 25 hour requirement is inconsistent with § 33.87 philosophies, stating that time at any rating validates any lower rating. This statement is incorrect. The test requirements are established to demonstrate engine durability at all normal and emergency ratings and associated limits. The test profiles incorporate specific elements to this end. The normal ratings all have individual elements that must be performed. The 30-minutes AEO rating is a normal use rating that is expected to be used with a frequency of occurrence similar to the takeoff or maximum continuous ratings, and must have a specific and independent element as part of the overall test. Also, the expectation is that 30-minute AEO will be used far more frequently than any emergency 0E1 rating. These emergency ratings must also be demonstrated (when applicable) however due to their limited use, these elements of the test may overlap certain normal rating elements found in the various test profiles. The practice mentioned by the commenter is applied to OEI ratings only, because they are rarely used and only in emergency situations. Therefore, the frequency of occurrence for normal use ratings dictate that specific test time be allocated to each rating, and that time can’t be combined because a rating is higher than another. No changes to the special conditions have been made in this regard.

The commenter also states that the basis for 25 hours of required run time was not described in the special condition. The 25 hours was selected to be between the basic cumulative run time for takeoff rating (18.75 hours) and maximum continuous rating (45 hours). This requirement is weighted more heavily toward the takeoff time due to the severe nature of the rating and intended operation. Therefore, no changes to the special conditions have been made in this regard. Applicability

These special conditions are applicable to the PWC PW210S turbo shaft engine. If PWC applies later for a change to the type certificate to include another closely related model incorporating the same novel or unusual design feature, these special conditions may also apply to that model as well, and would be made part of the certification basis for that model.

Conclusion

We reviewed the available data, including the comment received, and have determined that air safety and the public interest require adopting this special condition with the changes described above. This action affects only certain novel or unusual design features on one model of engine. It is not a rule of general applicability, and it affects only the applicant who applied to the FAA for approval of this feature on the engine product. List of Subjects in 14 CFR Part 33

Air transportation, Aircraft, Aviation safety, Safety.

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) issues the following special conditions as part of the type certification basis for the PWC PW210S turbo shaft engine.

1. PART 1 DEFINITION. Unless otherwise approved by the Administrator and documented in the appropriate manuals and certification documents, the following definition applies to this special condition: ‘‘Rated 30 Minute AEO Power’’, means the approved shaft horsepower developed under static conditions at the specified altitude and temperature, and within the operating limitations established under part 33, and limited in use to periods not exceeding 30- minutes each.

2. PART 33 REQUIREMENTS. (a) Sections 33.1 Applicability and 33.3 General: As applicable, all documentation, testing and analysis required to comply with the part 33 certification basis, must account for the 30-minute AEO rating, limits and usage.

(b) Section 33.4, instructions for continued airworthiness (ICA). In addition to the requirements of § 33.4, the ICA must:

(1) Include instructions to ensure that in-service engine deterioration due to rated 30-minute AEO power usage will not be excessive, meaning that all other approved ratings are available within associated limits and assumed usage, for successive flights; and that deterioration will not exceed that assumed for declaring a time between overhaul (TBO) period.

(i) The applicant must validate the adequacy of the maintenance actions required under paragraph (b)(1) above.

(2) Include in the airworthiness limitations section (ALS), any mandatory inspections and serviceability limits related to the use of the 30-minute AEO rating.

(c) Section 33.87, Endurance Test. In addition to the requirements of §§ 33.87(a) and 33.87(d), the overall test run must include a minimum of 25 hours of operation at 30-minute AEO power and limits, divided into periods of 30-minutes AEO power with alternate periods at maximum continuous power or less.

(1) Modification of the § 33.87 test requirements to include the 25 hours of operation at 30- minute AEO power rating must be proposed by the Applicant and accepted by the FAA.

(2) Each § 33.87(d) continuous oneengine-inoperative (0EI) rating test period of 30-minutes or longer, run at power and limits equal to or higher then the 30-minutes AEO raring, may be credited toward this requirement. Note that the test time required for the takeoff or other OEI ratings may not be counted toward the 25 hours of operation required at the 30-minute AEO rating.

Issued in Burlington, Massachusetts, on June 29, 2011. Robert J. Ganley, Acting Manager, Engine and Propeller Directorate, Aircraft Certification Service.
[FR Doc. 2011–17298 Filed 7–8–11; 8:45 am]

**BILLING CODE M**

**DEPARTMENT OF TRANSPORTATION**

**Federal Aviation Administration**

**14 CFR Part 39**

**[Docket No. FAA–2010–0853; Directorate Identifier 2010–NM–116–AD; Amendment**  **39–16720; AD 2011–12–13]**

**RIN 2120–AA64**

**Airworthiness Directives; The Boeing Company Model 737–600, –700, –700C,**  **–800, –900, and –900ER Series Airplanes** 

Correction

In rule document 2011–14344 appearing on pages 35327–35330 in the issue of June 17, 2011, make the following correction:

The table on page 35329 should read:


### 40597 Federal Register / Vol. 76, No. 132 / Monday, July 11, 2011 / Rules and Regulations

O N 

### -C ONDITION 

### C OSTS

Action Labor cost Parts cost Cost per product

Replacement ................... 2 work-hours × $85 per hour = $170 ........................................................................ $0 $170

[FR Doc. C1–2011–14344 Filed 7–8–11; 8:45 am]

**BILLING CODE 1505–01–D**

**DEPARTMENT OF TRANSPORTATION**

**Federal Aviation Administration**

**14 CFR Part 71**

**[Docket No. FAA–2011–0135; Airspace Docket No. 11–AGL–4]** 

**Amendment of Class E Airspace; Madison, SD** 

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

**ACTION :**  Final rule.

**SUMMARY :**  This action amends Class E airspace for Madison, SD, to accommodate new Area Navigation (RNAV) Standard Instrument Approach Procedures at Madison Municipal Airport. The FAA is taking this action to enhance the safety and management of Instrument Flight Rule (IFR) operations at the airport.

**DATES :**  Effective date: 0901 UTC, October 20, 2011. The Director of the Federal Register approves this incorporation by reference action under 1 CFR Part 51, subject to the annual revision of FAA Order 7400.9 and publication of conforming amendments.

**FOR FURTHER INFORMATION CONTACT :**  Scott Enander, Central Service Center, Operations Support Group, Federal Aviation Administration, Southwest Region, 2601 Meacham Blvd., Fort Worth, TX 76137; telephone (817) 321–
7716.

**SUPPLEMENTARY INFORMATION :**  History

On April 12, 2011, the FAA published in the Federal Register a notice of proposed rulemaking to amend Class E airspace for Madison, SD, creating controlled airspace at Madison Municipal Airport (76 FR 20279) Docket No. FAA–2011–0135. Interested parties were invited to participate in this rulemaking effort by submitting written comments on the proposal to the FAA. No comments were received. Class E airspace designations are published in paragraph 6005 of FAA Order 7400.9U dated August 18, 2010, and effective September 15, 2010, which is incorporated by reference in 14 CFR Part 71.1. The Class E airspace designations listed in this document will be published subsequently in the Order.

The Rule

This action amends Title 14 Code of Federal Regulations (14 CFR) Part 71 by creating additional Class E airspace extending upward from 700 feet above the surface for new standard instrument approach procedures at Madison Municipal Airport, Madison, SD. This action is necessary for the safety and management of IFR operations at the airport. Geographic coordinates are also being updated to coincide with the FAA’s aeronautical database.

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.

The FAA’s authority to issue rules regarding aviation safety is found in Title 49 of the U.S. Code. Subtitle 1, Section 106, describes the authority of the FAA Administrator. Subtitle VII, Aviation Programs, describes in more detail the scope of the agency’s authority. This rulemaking is promulgated under the authority described in Subtitle VII, Part A, Subpart I, Section 40103. Under that section, 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 amends controlled airspace for Madison Municipal Airport, Madison, SD. 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, B, C, D, AND E AIRSPACE AREAS; AIR**  **TRAFFIC SERVICE 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 Part 71.1 of the Federal Aviation Administration Order 7400.9U, Airspace Designations and Reporting Points, dated August 18, 2010, and effective September 15, 2010, is amended as follows:

Paragraph 6005 Class E Airspace areas extending upward from 700 feet or more above the surface of the earth.

* * * * *

AGL SD E5 Madison, SD [Amended] Madison Municipal Airport, SD

(Lat. 44 ° 00 ′ 59′′ N., long. 97 ° 05 ′08 ′′ W.) That airspace extending upward from 700 feet above the surface within a 7-mile radius of Madison Municipal Airport, and within 3 miles each side of the 341 ° bearing from the airport extending from the 7-mile radius to 7.4 miles northwest of the airport, and within 2 miles each side of the 334 ° bearing from the airport extending from the 7-mile radius to 10.5 miles northwest of the airport.

Issued in Fort Worth, Texas, on June 16,

2011. Walter L. Tweedy, Acting Manager, Operations Support Group, ATO Central Service Center.
[FR Doc. 2011–17189 Filed 7–8–11; 8:45 am]

**BILLING CODE 4910–13–P**