COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Fairchild (Swearingen) SA226 and SA227 Series Aeroplanes
AD/SWSA226/70 Horizontal Stabiliser - Aft Spar Attach Fitting 5/95
Models SA226-T, SA226-T(B), SA226-AT and SA226-TC listed in Fairchild Service Bulletin 226-55-010, Revised December 13 1991.
Models SA227-TT, SA227-AT, SA227-AC and SA227-BC listed in Fairchild Service Bulletin 227-55-006, Revised January 20 1993.
1. Modify the horizontal stabiliser aft spar attach fitting installation and the horizontal stabiliser upper and lower skins in accordance with the Accomplishment Instructions section of Fairchild Service Bulletin (SB) 226-55-010, Revised December 13 1991 or Fairchild SB 227-55-006, Revised January 20 1993, as applicable.
2. Visually inspect the radius area of the rib splice strap for cracks in accordance with Figure 2 of Fairchild SB 226-55-010, Revised December 13 1991 or Figure 3 of Fairchild SB 227-55-006, Revised January 20 1993, as applicable.
FAA AD 93-15-01 refers.
1. Modify in accordance with Requirement 1 before 10000 hours time in service or within 1000 hours time in service after 27 April 1995, whichever occurs later.
2. Initially inspect in accordance with Requirement 2 before 10000 hours time in service or within 1000 hours time in service after 27 April 1995, whichever occurs later. Re-inspect at intervals not to exceed 5000 hours time in service.
Cracks have been reported in rib splice straps. The modification will improve stabiliser aft spar attach fitting durability.