AD/AC-SNOW/18 - Wing Front Spar Corrosion (Cth)

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

Ayres Thrush (Snow) Commander Series Aeroplanes

AD/AC-SNOW/18 Wing Front Spar Corrosion 6/93

Applicability: Models Serial Numbers

S2D all serial numbers

S2R 5000 through 5099, 1380R,, and 1416R through 2583R S2R-R1340 R1340-001 through R1340-030 (with or without DC suffix) S2R-R3S R3S-001 through R3S-011 (with or without DC suffix) S2R-R1820 R1820-001 through R1820-035 (with or without DC suffix) S2R-T11 T11-001 through T11-005 (with or without DC suffix) S2R-T15 T15-001 through T15-029 with or without DC suffix) and T15- 031 (with or without DC suffix); and T27-001 through T27-029 (with or without DC suffix) and T27-031 (with or without DC suffix)

S2R-T34 6000 through 6049,, T34-001 through T34-178 (with or without DC suffix); T41-001 through T41-178 (with or without DC suffix) and T34-180 (with or without DC suffix); and T41-180 (with or without DC suffix)

S2R-T45 T45-001 through T45-003 (with or without DC suffix)

S2R-T65 and S2RHG-T65

T65-001 through T65-010 (with or without DC suffix)

S2R-G6 G6-101 through G6-107 (with or without DC suffix)

Requirement: 1. Inspect the wing front spar for corrosion in accordance with the "Accomplishment Instructions: I. Inspection of Front Spar" section of Ayres Service Bulletin SB-AG-29.

2. If corrosion is found; treat and repair the corrosion damage in accordance with the "Accomplishment Instructions: II. Repairs" section of Ayres Service Bulletin SB-AG-29.