AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section. Kelowna Flightcraft (General Dynamics/Convair) Series Aeroplanes AD/CONVAIR/7 Cockpit and Cabin Windows 5/2006 Applicability: Model 240, 340, and 440 aircraft, and all such model aircraft converted to turbopropellor power. Requirement: 1. For sliding windows part number (P/N) 340-3110307-7 or -8, which were five years old or older at 30 June 1980, and replaced with a serviceable window: Repetitively inspect in accordance with Requirement 3. 2. If the aircraft is to be operated with damage to the sliding windows, or cabin windows which exceeds the limits specified in the referenced service bulletins specified in Requirement 3, or with sliding windows P/N 240-3110315-6 or -7; or with sliding windows P/N 340-3110307- or -8, which are twelve years old or older; or cabin windows which are twelve years old or older; install the following placard in full view of the pilots: PRESSURISED FLIGHT PROHIBITED The placard may be removed when the inspections or window replacements required by this Directive have been complied with. 3. For sliding windows P/N 340-3110307-7 and -8, installed in aircraft used in pressurised operations: Inspect windows in accordance with paragraph 2.D.(4) under the "Sliding Windows" Section, page 45 of General Dynamics Service Bulletin (SB) 640 (340D) No. 53-5B, dated 16 January 1980, or page 46 of SB 600 (240D) No. 53-4B, dated 16 January 1980. 4. For sliding windows P/N 340-3110307-7 and -8 that have been in storage or installed on aircraft which have been in storage, or installed on aircraft operated unpressurised, and which are now to be used in pressurised operation; inspect in accordance with Requirement 3. 5. For pilots' windshields with an age of 12 years or more from date of manufacture, inspect the pilots' windshields in accordance with paragraph 2.D.4 under the Pilots' Windshield Section, page 39 of SB 600 (240D) No. 53-4B, or page 38 of SB 640 (340D) No. 53-5B. 6. For direct vision windows with over 12 years time in service, inspect in accordance with paragraph 2.D.4 under the DV Windows Section, page 41 of SB 600 (240D) No. 53-4B, or page 40 of SB No. 640 (340D) of SB No. 53-5B. 7. For cabin windows with over 12 years time in service, inspect in accordance with paragraph 2.D.(4) under the "Cabin Windows" Section, page 49 of SB 600 (240D) No. 53-4B, or page 49 of SB 640 (340D) No. 53-5B. 8. For cabin windows twelve years old or older that have been in storage or installed on aircraft which have been in storage, or installed on aircraft operated unpressurised, and which are now to be used in pressurised operation; inspect in accordance with Requirement 7. Note 1: Replacement of the sliding windows P/N 340-3110307-7 or -8 with a new sliding window, P/N 340-3110307-9 or -10, terminates the inspection requirements for the replaced sliding window. Note 2: FAA AD 80-08-03 Amdt 39-3734 refers. Compliance: 1. Unless already replaced, before further pressurised flight. 2. Before further flight. 3. Within 100 hours time in service after 11 May 2006, and thereafter at intervals not to exceed 100 hours time in service. 4. Before return to pressurised flight after 11 May 2006, unless previously inspected. 5. Initially inspect within 250 hours time in service after 11 May 2006, unless already accomplished, and thereafter at intervals not to exceed 90 days or 500 hours time in service, whichever occurs first. 6. Initially inspect within 250 hours time in service after 11 May 2006, unless already accomplished, and thereafter at intervals not to exceed 90 days or 500 hours time in service, whichever occurs first. 7. Initially inspect within 250 hours time in service after 11 May 2006, unless already accomplished, and thereafter at intervals not to exceed 90 days or 500 hours time in service, whichever occurs first. 8. Before return to pressurised flight after 11 May 2006, unless previously inspected. This Airworthiness Directive becomes effective on 11 May 2006. Background: The FAA requires certain actions to prevent possible failure of the pilots' windshield, direct vision windows, sliding windows, and cabin windows. David Villiers Delegate of the Civil Aviation Safety Authority 29 March 2006