AD 2026-16-12: Air Tractor, Inc. Airplanes

What the FAA requires

The FAA is superseding Airworthiness Directive (AD) 2024-16- 06, which applied to all Air Tractor, Inc. (Air Tractor) Model AT-802 and AT-802A airplanes with Wipaire, Inc. Supplemental Type Certificate (STC) No. SA01795CH installed. AD 2024-16-06 required repetitively inspecting the left and right, forward and rear, horizontal stabilizer spars for cracks, replacing any horizontal stabilizer spar found cracked or damaged, installing bathtub fittings, and reporting inspection results to the FAA. Since the FAA issued AD 2024-16-06, additional cracks in the horizontal stabilizer spars were reported where the vertical fin structural support brace mounts to the horizontal stabilizer spar. This AD retains all the actions of AD 2024- 16-06 and adds inspections to another area. The FAA is issuing this AD to address the unsafe condition on these products.

Read the full directive on the Federal Register →

Applicability

This AD applies to Air Tractor, Inc. Model AT-802 and AT-802A airplanes, all serial numbers, certificated in any category, that have Wipaire, Inc. Supplemental Type Certificate (STC) No. SA01795CH installed. (d) Subject Joint Aircraft System Component (JASC) Code 5510, Horizontal stabilizer structure; 5511 Horizontal stabilizer, Spar/Rib; 5514, Horizontal stabilizer miscellaneous structure; 5530, Vertical stabilizer structure. (e) Unsafe Condition This AD was prompted by additional reports of cracks where the vertical fin structural support brace mounts to the horizontal stabilizer spar. The FAA is issuing this AD to prevent structural failure of the horizontal stabilizer spars. The unsafe c

Part numbers this directive names

This directive does not name specific part numbers in its text; it applies by aircraft model. See the applicability above and the manufacturer's service bulletin it references.