AD 2007-24-13 Airworthiness Directives; Cirrus Design Corporation Model SR22 Airplanes

Makes named: cirrus. Models named: SR22. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to Model SR22 airplanes, serial numbers 2334, 2420, and 2438 through 2749, that are certificated in any category.

To address this problem, you must do the following, unless already done:   Actions Compliance Procedures Install a drain hole in the left and right outboard wing tips At whichever of the following occurs first: (1) Within the next 10 hours time-in-service after December 4, 2007 (the effective date of this AD); or (2) Within the next 30 days after December 4, 2007 (the effective date of this AD) Follow Cirrus Design Service Bulletin SB 2X-57-08, dated November 2, 2007. Alternative Methods of Compliance (AMOCs) (f) The Manager, Chicago Aircraft Certification (ACO) Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Roy Boffo, Aerospace Engineer, Chicago ACO, 2300 East Devon Avenue, Room 107, Des Plaines, Illinois 60018; telephone: (847) 294-7564; fax: (847) 294-7834. Before using any approved AMOC on any airplane to which the AMOC applies, notify your appropriate principal inspector (PI) in the FAA Flight Standards District Office (FSDO), or lacking a PI, your local FSDO. Material Incorporated by Reference (g) You must use Cirrus Design Service Bulletin SB 2X-57-08, dated November 2, 2007, 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 Cirrus Design Corporation, 4515 Taylor Corporation, Duluth, Minnesota 55811; telephone: (218) 727-2737. (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 20, 2007. Kim Smith, Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. E7-23118 Filed 11-28-07; 8:45 am] BILLING CODE 4910-13-P

This AD results from reports of pilots' inability to move the aileron control without using excessive force when flying in freezing conditions. Moisture entered through a gap at the interface of the left and right outboard wing tips and wing structure. The moisture traveled along the aft wing shear web, accumulated below the aileron control pulley, and froze at an altitude with an outside air temperature below freezing. When this moisture is exposed to freezing conditions, operation of the aileron control pulley is impaired. We are issuing this AD to prevent moisture from accumulating along the wing shear web where it may freeze in certain conditions. This condition could result in operational failure of the aileron control pulley, which could lead to loss of control.