AD 2006-25-08 Airworthiness Directives; Columbia Aircraft Manufacturing Models LC41-550FG and LC42-550FG Airplanes

Models named: LC41-550FG, LC42-550FG. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to Models LC41-550FG and LC42-550FG airplanes, all serial numbers equipped with Kelly Aerospace Thermal Systems Supplemental Type Certificate (STC) SA02260CH, that are certificated in any category.

To address this problem, you must do the following, unless already done:   Actions Compliance Procedures (1) Deactivate the Kelly Aerospace Thermal Systems Thermawing Deice System installed following STC SA02260CH Before further flight after December 21, 2006 (the effective date of this AD) Follow Kelly Aerospace Thermal Systems Service Letter Bulletin No. SL-06-001, Issue Date: November 15, 2006. (2) Fabricate a placard that incorporates the following words (using at least 1/4 -inch black letter on a white background) and install this placard in clear view of the pilot.“DEICE SYSTEM INOPERABLE” Before further flight after December 21, 2006 (the effective date of this AD) The owner/operator holding at least a private pilot certificate as authorized by section 43.7 of the Federal Aviation Regulations (14 CFR 43.7) may fabricate and install the placard. Make an entry into the aircraft records showing compliance with these portions of the AD in accordance with section 43.9 of the Federal Aviation Regulations (14 CFR 43.9). Alternative Methods of Compliance (AMOCs) (f) The Manager, Chicago Aircraft Certification Office, FAA, ATTN: Roy Boffo, Aerospace Engineer, 2300 E. Devon Avenue, Room 107, Des Plaines, IL 60018; telephone: (847) 294-7564; fax: (847) 294-7834, 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 use Kelly Aerospace Thermal Systems Service Letter Bulletin No. SL-06-001, Issue Date: November 15, 2006, to do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Kelly Aerospace Thermal Systems, 1625 Lost Nation Road, Willoughby, Ohio 44094; telephone: (440) 951-4744; fax: (440) 951-4725. (3) You may review copies at the FAA, Central Region, Office of the Regional Counsel, 901 Locust, Kansas City, Missouri 64106; 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 . Issued in Kansas City, Missouri, on November 29, 2006. John R. Colomy, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. E6-20860 Filed 12-8-06; 8:45 am] BILLING CODE 4910-13-P

This AD results from problems with the installation of the Kelly Aerospace Thermawing Deice System (also known as E-Vade) following STC SA02260CH. We are issuing this AD to prevent a short circuit condition at the deice heater connector, which could result in damage to the wings and horizontal stabilizer. This damage could lead to reduced structural integrity of the airplane.