AD 2004-15-17

This amendment adopts a new airworthiness directive (AD), applicable to certain Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 series airplanes, that requires a one-time inspection to determine the part number of the engine mounting frames, brace struts, and attachment fittings; and related corrective action. This action is necessary to ensure the structural integrity of the engine-to-wing load path and prevent possible separation of the engine from the airplane. This action is intended to address the identified unsafe condition.

Final rule.

2004-15-17 Fokker Services B.V.: Amendment 39-13751. Docket 2002-NM-302-AD.

Applicability: Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 series airplanes; certificated in any category; on which one or more of the modifications specified in paragraph 1.A.(1) of Fokker Service Bulletin F27/54-53, dated February 15, 2002, has been done.

Compliance: Required as indicated, unless accomplished previously.

To ensure the structural integrity of the engine-to-wing load path and prevent possible separation of the engine from the airplane, accomplish the following:

One-Time Inspection

(a) Within 24 months after the effective date of this AD: Do a one-time general visual inspection to determine the part numbers of the engine mounting frames, brace struts, and attachment fittings; per the Accomplishment Instructions of Fokker Service Bulletin F27/54-53, dated February 15, 2002. Do the inspection and corrective action per the Accomplishment Instructions of the service bulletin. Do the related corrective action before further flight.

Note 1: For the purposes of this AD, a general visual inspection is defined as: "A visual examination of an interior or exterior area, installation, or assembly to detect obvious damage, failure, or irregularity. This level of inspection is made from within touching distance unless otherwise specified. A mirror may be necessary to enhance visual access to all exposed surfaces in the inspection area. This level of inspection is made under normally available lighting conditions such as daylight, hangar lighting, flashlight, or droplight and may require removal or opening of access panels or doors. Stands, ladders, or platforms may be required to gain proximity to the area being checked."

Related Service Information

Note 2: Fokker Service Bulletin F27/54-53, dated February 15, 2002, references Fokker Service Bulletin 51-24, dated December 1, 1971, as the appropriate source of service information for installing a new, improved engine mounting frame; and Fokker Service Bulletin F27/54-26, Revision 5, dated September 30, 2001, as the appropriate source of service information for installing new, improved, stronger brace struts and brackets.

Parts Installation

(b) As of the effective date of this AD, no person may install on any airplane an engine mounting frame, brace strut, or attachment fitting unless that part has been identified as appropriate for the airplane configuration, as specified in the Accomplishment Instructions of Fokker Service Bulletin F27/54-53, dated February 15, 2002.

Alternative Methods of Compliance

(c) In accordance with 14 CFR 39.19, the Manager, International Branch, ANM-116, FAA, Transport Airplane Directorate, is authorized to approve alternative methods of compliance for this AD.

Incorporation by Reference

(d) The actions shall be done in accordance with Fokker Service Bulletin F27/54-53, dated February 15, 2002. 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 Fokker Services B.V., P.O. Box 231, 2150 AE Nieuw-Vennep, the Netherlands. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call (202) 741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html .

Note 3: The subject of this AD is addressed in Dutch airworthiness directive 2002-067, dated May 31, 2002.

Effective Date

(e) This amendment becomes effective on September 3, 2004.

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 Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 series airplanes was published in the Federal Register on June 2, 2004 (69 FR 31053). That action proposed to require a one-time inspection to determine the part number of the engine mounting frames, brace struts, and attachment fittings; and related corrective action.

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

The FAA estimates that 41 airplanes of U.S. registry will be affected by this AD, that it will take approximately 4 work hours per airplane to accomplish the required actions, and that the average labor rate is $65 per work hour. Based on these figures, the cost impact of the AD on U.S. operators is estimated to be $10,660, or $260 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, Incorporation by 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: