COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Morovan Zlin Z 526 Series Aeroplanes
AD/Z 526/2 Main Wing Spar Corrosion 11/96
All models Z 526 aircraft.
Inspect in accordance with Morovan Mandatory Service Bulletin Z 526/69a.
Czech CAI AD 2-016/96 refers.
Before 10 November 1996, and thereafter at intervals not to exceed 12 months.
The Czech civil aviation authority received reports of exfoliation corrosion on the main wing spar flanges which seriously degraded the structural strength of the wing.