AD 2000-24-25

This amendment adopts a new airworthiness directive (AD), applicable to certain Raytheon Model Hawker 800A (U-125A) and Hawker 800XP series airplanes, that requires inspecting the roller clearance in the nose landing gear drag stay and making any necessary adjustments. This amendment is prompted by reports indicating multiple findings of roller clearances that are in excess of specifications. The actions specified by this AD are intended to prevent the inability to extend the nose landing gear, which could result in damage to the airplane upon landing.

Final rule

2000-24-25 RAYTHEON AIRCRAFT COMPANY: Amendment 39-12032. Docket 2000-NM-03-AD.

Applicability: Model Hawker 800XP and Hawker 800A (U-125A) series airplanes, as specified in Raytheon Aircraft Service Bulletin SB 32-3274, dated August 1999; certificated in any category.

NOTE 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (c) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.

Compliance: Required as indicated, unless accomplished previously.
To prevent the inability to extend the nose landing gear due to excessive clearance of the roller in the drag stay rigging, which could result in damage to the airplane upon landing, accomplish the following:

Inspection and Adjustment
(a) Within 50 hours time-in-service after the effective date of this AD: Remove the paint from the drag stay arm of the nose landing gear at its point of contact with the stop bolt, do a check of the roller clearances, and make any necessary adjustments, in accordance with the Accomplishment Instructions of Raytheon Aircraft Service Bulletin SB 32-3274, dated August 1999.

(b) Airplanes which have had the 600-hour inspection specified in the Aircraft Maintenance Manual before the effective date of this AD or which will have the 600-hour inspection within 50 hours time-in-service after the effective date of this AD are considered to be in compliancewith paragraph (a) of this AD.

Alternative Methods of Compliance
(c) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Wichita Aircraft Certification Office (ACO), FAA. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Wichita ACO.

NOTE 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Wichita ACO.

Special Flight Permits
(d) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished.

Incorporation by Reference
(e) The actions shall be done in accordance with Raytheon Aircraft Service BulletinSB 32-3274, dated August 1999. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Raytheon Aircraft Company, 9709 East Central, Wichita, Kansas 67206. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, 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.

Effective Date
(f) This amendment becomes effective on January 16, 2001.

A proposal to amend part 39 of the Federal Aviation Regulations (14 CFR part 39) to include an airworthiness directive (AD) that is applicable to certain Raytheon Model Hawker 800A (U-125A) and Hawker 800XP series airplanes was published in the Federal Register on August 8, 2000 (65 FR 48402). That action proposed to require inspecting the roller clearance in the nose landing gear drag stay and making any necessary adjustments.

Comments
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. Conclusion

The FAA has determined that air safety and the public interest require the adoption of the rule as proposed.

Cost Impact
There are approximately 85 airplanes of the affected design in the worldwide fleet. The FAA estimates that 50 airplanes of U.S. registry will be affected by this AD,that it will take approximately 7 work hours per airplane to accomplish the required inspection and any necessary adjustments, and that the average labor rate is $60 per work hour. Based on these figures, the cost impact of the AD on U.S. operators is estimated to be $21,000, or $420 per airplane.

The cost impact figure discussed above is 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 cost impact figures discussed in AD rulemaking actions represent only the time necessary to perform the specific actions actually required by the AD. These figures typically do not include incidental costs, such as the time required to gain access and close up, planning time, or time necessitated by other administrative actions.

Regulatory Impact
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."

List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporationby reference, 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 adding the following new airworthiness directive: