AD 2006-15-01 Airworthiness Directives; Twin Commander Aircraft Corporation Models 690, 690A, and 690B Airplanes

Makes named: commander, twin commander. Models named: 690, 690A, 690B. Read the applicability below — it usually turns on serial or part numbers too.

This AD affects Models 690, 690A, and 690B airplanes, all serial numbers, that are certificated in any category.

To address this problem, you must do the following:   Actions Compliance Procedures (1) Inspect, visually and using fluorescent dye penetrant, the support structures for the inboard and center aileron hinge fittings on both wings for cracks Within the next 150 hours time-in-service or 12 months after August 21, 2006 (the effective date of this AD), whichever occurs first Follow Twin Commander Aircraft LLC Alert Service Bulletin 236A and Alert Service Bulletin 238, both dated December 21, 2004, as applicable. (2) If you do not find cracks during the inspection required in paragraph (e)(1) of this AD, reinforce the support structures for the inboard and center aileron hinge fittings on both wings that are crack free Before further flight after the inspection required in paragraph (e)(1) of this AD. After doing the reinforcement, no further action is required Follow Twin Commander Aircraft LLC Alert Service Bulletin 236A and Alert Service Bulletin 238, both dated December 21, 2004, as applicable. (3) If you find cracks during the inspection required in paragraph (e)(1) of this AD, replace and reinforce the cracked support structure Before further flight after the inspection required in paragraph (e)(1) of this AD. After doing the replacement and reinforcement, no further action is required Follow Twin Commander Aircraft LLC Alert Service Bulletin 236A and Alert Service Bulletin 238, both dated December 21, 2004, as applicable. Alternative Methods of Compliance (AMOCs) (f) The Manager, Seattle Aircraft Certification Office (ACO), FAA, ATTN: Vince Massey, Aerospace Engineer, Seattle, ACO, 1601 Lind Avenue SW., Renton, WA 98057; telephone: (425) 917-6475; facsimile: (425) 917-6590, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Material Incorporated by Reference (g) You must do the actions required by this AD following Twin Commander Aircraft LLC Alert Service Bulletin 236A and Twin Commander Aircraft LLC Alert Service Bulletin 238, both dated December 21, 2004. The Director of the Federal Register approved the incorporation by reference of these service bulletins in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. To get a copy of this service information, contact Twin Commander Aircraft LLC, 19010 59th Drive NE., Arlington, WA 98223, telephone: (360) 435-9797; facsimile: (360) 435-1112. To review copies of this service information, go to the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html or call (202) 741-6030. To view the AD docket, go to the Docket Management Facility; US Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-401, Washington, DC 20590-001 or on the Internet at http://dms.dot.gov . The docket number is FAA-2006-23785; Directorate Identifier 2006-CE-10-AD. Issued in Kansas City, Missouri, on July 7, 2006. Kim Smith, Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. 06-6225 Filed 7-14-06; 8:45 am] BILLING CODE 4910-13-M

This AD results from reports of cracks found in the support structures for the inboard and center aileron hinge fittings on both wings. The actions specified in this AD are intended to detect and correct cracks in the support structures for the inboard and center aileron hinge fittings on both wings, which could result in aileron failure. This failure could lead to reduced controllability or loss of control of the airplane.