AD 2000-08-07

Effective May 31, 2000.

The incorporation by reference of Raytheon Service Bulletin SB.54-1-3815B, Revision 1, dated May 1998, as listed in the regulations, is approved by the Director of the Federal Register of May 31, 2000.

The incorporation by reference of Raytheon Service Bulletin SB.54-1-3815B, dated March 26, 1996, as listed in the regulations, was approved previously by the Director of the Federal Register as of January 27, 1997 (61 FR 66878, December 19, 1996).

The service information referenced in this AD may be obtained from Raytheon Aircraft Company, Manager Service Engineering, Hawker Customer Support Department, P.O. Box 85, Wichita, Kansas, 67201-0085. This information may be examined at the Federal Aviation Administration (FAA), Transport Airplane Directorate, Rules Docket, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Small Airplane Directorate, Wichita Aircraft Certification Office, 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC.

Jeffrey A. Pretz, Aerospace Engineer, Systems and Propulsion Branch, ACE-116W, FAA, Small Airplane Directorate, Wichita Aircraft Certification Office, 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas 67209; telephone (316) 946-4153; fax (316) 946-4407.

A proposal to amend part 39 of the Federal Aviation Regulations (14 CFR part 39) by superseding AD 96-24-16, amendment 39-9840 (61 FR 66878, December 19, 1996), which is applicable to certain Raytheon Model BAe 125-800A and BAe 125-800B, Model Hawker 800, and Model Hawker 800XP series airplanes, was published in the Federal Register on January 24, 2000 (65 FR 3619). The action proposed to continue to require the filling of two tooling holes on the firewalls of the left and right engine pylons with firewall sealant. The action also proposed to require the sealing of all unused (open) tooling holes on the firewalls of the left and right engine pylons, and would expand the applicability to include additional airplanes.

Interested persons have been afforded an opportunity to participate in the making of this amendment. No comments were submitted in response to 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.

There are approximately 340 Model BAe 125-800A and BAe 125-800B, Model Hawker 800, and Model Hawker 800XP series airplanes of the affected design in the worldwide fleet. The FAA estimates that 221 airplanes of U.S. registry will be affected by this AD.

The actions that are currently required by AD 96-24-16, and retained in this AD, take approximately 2 work hours per airplane to accomplish, at an average labor rate of $60 per work hour. Based on these figures, the cost impact of the currently required actions on U.S. operators is estimated to be $120 per airplane.

The new actions that are required in this AD action will take approximately 2 work hours per airplane to accomplish, at an average labor rate of $60 per work hour. Based on these figures, the cost impact of the requirements of this AD on U.S. operators is estimated to be $26,520, or $120 per airplane.

The cost impact figures discussed above are based on assumptions that no operator has yet accomplished any of the requirements of this AD action, and that no operator would accomplish those actions in the future if this AD were not adopted.

The regulations adopted herein 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. Therefore, it is determined that this final rule does not have federalism implications under Executive Order 13132.

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 economic impact, 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 Rules Docket at the location provided under the caption ADDRESSES.

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:

1. The authority citation for part 39 continues to read as follows:

2. Section 39.13 is amended by removing amendment 39-9840 (61 FR 66878, December 19, 1996), and by adding a new airworthiness directive (AD), amendment 39-11693, to read as follows: