2002-22-02: Engine Mount Bracket

2002-22-02 Pilatus Britten-Norman Limited: Amendment 39-12926; Docket No. 2002-CE-21-AD. (a) What airplanes are affected by this AD? This AD affects the following airplane models, all serial numbers, that are certificated in any category: Models BN-2, BN-2A, BN-2A-2, BN-2A-3, BN-2A-6, BN-2A-8, BN-2A-9, BN-2A-20, BN-2A-21, BN-2A-26, BN-2A-27, BN-2B-20, BN-2B-21, BN-2B-26, BN-2B-27, BN-2T, BN-2T-4R, BN2A MK. III, BN2A MK. III-2, BN2A MK. III-3 (b) Who must comply with this AD? Anyone who wishes to operate any of the airplanes identified in paragraph (a) of this AD must comply with this AD. (c) What problem does this AD address? The actions specified by this AD are intended to detect and correct cracks in the engine mount bracket. Such a condition could cause the engine mount assembly to fail, which could result in the engine separating from the airplane and lead to loss of control of the airplane. (d) What actions must I accomplish to address this problem?To address this problem, you must accomplish the following: Actions Compliance Procedures (1) Inspect the bottom corner of the engine mount bracket between the attachment flange and the main part of the bracket for cracks: (i) If cracks are found during any inspections, replace the bracket with a new bracket and continue with the repetitive inspection requirements of this AD; (ii) If no cracks are found during any inspection, continue with the repetitive inspection requirements of this AD. Initially inspect within the next 500 hours time-in-service (TIS) or within the next 24 calendar months after December 20, 2002 (the effective date of this AD), whichever occurs first, and repetitively inspect thereafter at intervals not-to-exceed 500 hours TIS or 1,000 landings, whichever occurs first. Replace cracked bracket prior to further flight after the inspection in which the crack is found. In accordance with Pilatus Britten Norman Service Bulletin SB 275, Issue 1, dated November 30, 2001. (2) Send the removed brackets to the Engineering and Design Authority, B-N Group Ltd. and report the return to FAA. The Office of Management and Budget (OMB) approved the information collection requirements contained in this regulation under the provisions of the Paperwork Reduction Act of 1980 (44 U.S.C. 3501 et seq.) and assigned OMB Control Number 2120-0056. Within 10 days after removing the bracket or within 10 days after December 20, 2002 (the effective date of this AD), whichever occurs later. Send the removed brackets to B-N Group Limited, Bembridge, Isle of Wight, United Kingdom P035 5PR, and report the return to Doug Rudolph, FAA, at the address in paragraph (f) of this AD. (e) Can I comply with this AD in any other way? You may use an alternative method of compliance or adjust the compliance time if: (1) Your alternative method of compliance provides an equivalent level of safety; and (2) The Standards Office Manager, Small Airplane Directorate,approves your alternative. Submit your request through an FAA Principal Maintenance Inspector, who may add comments and then send it to the Standards Office Manager. Note 1: This AD applies to each airplane identified in paragraph (a) of this AD, 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 (e) 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 you have not eliminated the unsafe condition, specific actions you propose to address it. (f) Where can I get information about any already-approved alternative methods of compliance? Contact Doug Rudolph, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4059; facsimile: (816) 329-4090. (g) What if I need to fly the airplane to another location to comply with this AD? The FAA can issue a special flight permit under 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate your airplane to a location where you can accomplish the requirements of this AD. (h) Are any service bulletins incorporated into this AD by reference? Actions required by this AD must be done in accordance with Pilatus Britten Norman Service Bulletin SB 275, Issue 1, dated November 30, 2001. The Director of the Federal Register approved this incorporation by reference under 5 U.S.C. 552(a) and 1 CFR part 51. You may get copies from B-N Group Limited, Bembridge, Isle of Wight, United Kingdom PO35 5PR; telephone: +44 (0) 1983 872511; facsimile: +44 (0) 1983 873246. You may view copies at the FAA, Central Region,Office of the Regional Counsel, 901 Locust, Room 506, Kansas City, Missouri, or at the Office of the Federal Register, 800 North Capitol Street, NW, suite 700, Washington, DC. Note 2: The subject of this AD is addressed in the United Kingdom CAA-AD Number 005-11-2001, not dated. (i) When does this amendment become effective? This amendment becomes effective on December 20, 2002.