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Aircraft structures

STC SA4735NM

FAA DRS lists SA4735NM as Current · Reissued, held by R-S Sales Inc., for Air Tractor AT-401, Air Tractor AT-501, and Air Tractor AT-502, and 4 more aircraft configurations. Recorded change: Installation of automatic flagman Model 4 dispensor system on the upper surface of the right wing root. Snapshot dated June 30, 2026.

FAA-listed holder
R-S Sales Inc.
Aircraft configurations
7
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of automatic flagman Model 4 dispensor system on the upper surface of the right wing root.

SA4735NM identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.

Applicability

Aircraft named in FAA DRS

Named aircraft: Air Tractor AT-401, Air Tractor AT-501, and Air Tractor AT-502, and 4 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Air Tractor AT-401A17SWAir Tractor AT-501A17SWAir Tractor AT-502A17SWAir Tractor AT-503A17SWAir Tractor AT-503AA17SWAir Tractor AT-402AA17SWAir Tractor AT-402A17SW

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Air Tractor AT-401 and Air Tractor AT-501, and 5 more aircraft configurations model, serial range, and configuration?
  2. 02Which configuration, loads, materials, inspections, and damage limits apply?
  3. 03Who can legally supply the design data, kit, instructions, and ICAs?
  4. 04What parts, labor, conformity, and return-to-service work are excluded?

Related aircraft structures STCs

ST01625LAAircraft structures

Modification of Wing Inboard and Outboard Aft Trailing Edge Flaps in accordance with FAA Approved AeroTech Services, Inc. Master Drawing List No. 52-0001, Revision C, dated May 20, 2003, or later FAA Approved Revisions. (for Model 737-200, -200C and -300 Series airplanes), and FAA Approved AeroTech Services, Inc. Master Drawing List No. 52-0001, Revision E, dated January 6, 2005, or later FAA Approved Revisions. (for Model 737-400 and 500 Series airplanes.).

FAA holder: AVMOD, LLC

View record