Document ID: chunk:federal_register_of_legislation:F2006L01338:body:0:p1
Version: federal_register_of_legislation:F2006L01338
Segment Type: other
Provision Reference: 
Character Range: 0–2859

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/22  Wing Lower Skin Inboard of Station 8  6/2006

Applicability:  Model 340 and 440 aircraft, and all such model aircraft converted to turbopropeller power.
Requirement:       1. For aircraft with 15,000 hours or less time in service:

                   Clean the inside surface of the wing lower skin inboard of Station 8 in the vicinity of the second rivet from the outboard end of the short stringer in line with the wing access door in the wheel well, and conduct a detailed visual inspection of that area for any indication of wing skin cracks.  If cracks are detected accomplish Requirements 4, 5, or 6.

                   2. For aircraft with more than 15,000 hours time in service and less than 20,000 hours time in service:

                   Clean the inside surface of the wing lower skin inboard of Station 8 in the vicinity of the second rivet from the outboard end of the short stringer in line with the wing access door in the wheel well, and conduct a detailed visual inspection of that area for any indication of wing skin cracks.  If cracks are detected accomplish Requirements 4, 5, or 6.

                   3. For aircraft with 20,000 hours time in service or more:

                   Clean the inside surface of the wing lower skin inboard of Station 8 in the vicinity of the second rivet from the outboard end of the short stringer in line with the wing access door in the wheel well, and conduct a detailed visual inspection of that area for any indication of wing skin cracks.  If cracks are detected accomplish Requirements 4, 5, or 6.

                   For aircraft with no wing lower skin cracks detected in the specified inspection area, the inspection intervals may be increased to 1,000 hours time in service when the aircraft is modified as follows:

                   Remove the 3/16-inch rivet located above where the cracks originate, enlarge the hole to 1/4-inch, and inspect the wing lower skin around the hole.  If no wing skin crack is detected, install a close tolerance -8 rivet or 1/4-inch bolt.  If cracks are detected, accomplish Requirements 4, 5, or