1AD/VAT/37 - Wing Ribs - Inspection and Modification

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

Victa and A.E.S.L. Airtourer Series Aeroplanes

AD/VAT/37 Wing Ribs - Inspection and Modification 6/72

Applicability: All models not modified to AESL SB No. 019.

Requirement: Remove the walkway top skin sufficiently for wing ribs P/Nos. 10217/1 and /2 and 102109/1 to be inspected for cracks. Particular attention should be paid to the lower flange to web radius in the vicinity of the attachment points for the landing gear legs.

Prior to further flight defective ribs shall be repaired in accordance with AESL SB No. 019 or to a scheme approved by the Secretary.

Compliance: For aircraft which have exceeded 3500 hours time in service as at 30 June 1972 - within 300 hours time in service and thereafter at intervals not exceeding 3500 hours time in service.

For aircraft which have not exceeded 3500 hours time in service at 30 June 1972 - before achieving 3800 hours time in service and thereafter at intervals not exceeding 3500 hours time in service.