AD 99-23-01

A proposal to amend part 39 of the Federal Aviation Regulations (14 CFR part 39) by superseding AD 98-21-36, Amendment 39-10845, Docket No. 97-SW-01-AD, (63 FR 55783, October 19, 1998), which is applicable to Robinson Model R44 helicopters, was published in the Federal Register on August 4, 1999 (64 FR 42296). That action proposed to require removing the grip assembly, P/N A756-6, Revision N or prior revision, and replacing it with an airworthy grip assembly other than P/N A765-6, Revision A through N.

Interested persons have been afforded an opportunity to participate in the making of this amendment. No comments were received on the proposal or the FAA's determination of the cost to the public. The FAA has determined that air safety and the public interest require the adoption of the rule as proposed.

The FAA estimates that 5 helicopters of U.S. registry will be affected by this AD, that it will take approximately 4 work hours per helicopter to accomplish the required actions, and that the average labor rate is $60 per work hour. Required parts will cost approximately $576 per helicopter. Based on these figures, the total cost impact of the AD on U.S. operators is estimated to be $4,080.

The regulations adopted herein will not have substantial direct effects 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. Therefore, in accordance with Executive Order 12612, it is determined that this final rule does not have sufficient federalism implications to warrant the preparation of a Federalism Assessment.

For the reasons discussed above, I certify that this action (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) will not have a significant economicimpact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. A final evaluation has been prepared for this action and it is contained in the Rules Docket. A copy of it may be obtained from the FAA, Office of the Regional Counsel, Southwest Region, 2601 Meacham Blvd., Room 663, Fort Worth, Texas.

List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Safety.

Adoption of the Amendment Accordingly, pursuant to the authority delegated to me by the Administrator, the Federal Aviation Administration amends part 39 of the Federal Aviation Regulations (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. Section 39.13 is amended by removing Amendment 39-10845 (63 FR 55783), and by adding a new airworthiness directive (AD), Amendment 39-11397, to read as follows: