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Other aircraft modifications

STC SA01639NY

FAA DRS lists SA01639NY as Current · Amended, held by Scale Modelbuilders Inc., for Air Tractor AT-401, Air Tractor AT-401A, and Air Tractor AT-401B, and 37 more aircraft configurations. Recorded change: Replacement of 12 refrigerant in air conditioning system with Enviro Refrigerant Hotshot R414B. Snapshot dated June 30, 2026.

FAA-listed holder
Scale Modelbuilders Inc.
Aircraft configurations
40
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

Replacement of 12 refrigerant in air conditioning system with Enviro Refrigerant Hotshot R414B.

SA01639NY 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-401A, and Air Tractor AT-401B, and 37 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Air Tractor AT-401A17SWAir Tractor AT-401AA17SWAir Tractor AT-401BA17SWAir Tractor AT-402A17SWAir Tractor AT-402AA17SWAir Tractor AT-402BA17SWAir Tractor AT-501A17SWAir Tractor AT-502A17SWAir Tractor AT-502AA17SWAir Tractor AT-502BA17SWAir Tractor AT-503A17SWAir Tractor AT-503AA17SWAir Tractor AT-602A19SWAir Tractor AT-802A19SWAir Tractor AT-802AA19SWAir Tractor AT-250A9SWAir Tractor AT-300A9SWAir Tractor AT-301A9SWAir Tractor AT-302A9SWAir Tractor AT-400A9SWAir Tractor AT-400AA9SWAllied Ag Cat Productions G-1641A16Allied Ag Cat Productions G-164A1A16Allied Ag Cat Productions G-164B1A16Allied Ag Cat Productions G-164B-15T1A16
Allied AgCat Productions G-164B-20T1A16
Allied Ag Cat Productions G-164B-34T1A16Allied Ag Cat Productions G-164B (with 73 inch wing gap)1A16Allied Ag Cat Productions G-164C1A16Allied Ag Cat Productions G-164D1A16Allied Ag Cat Productions G-164D (with 73 inch wing gap)1A16
Ayres 600-S-2C2A7
Ayres S-2B2A7
Ayres S-2C2A7Ayres 600 S-2DA3SWAyres S-2RA3SWAyres S2R-R1340A3SWAyres S2R-R3SA3SWAyres S2R-T11A3SWAyres S2R-T15A3SW

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Air Tractor AT-401 and Air Tractor AT-401A, and 38 more aircraft configurations model, serial range, and configuration?
  2. 02Which configuration, parts, installation data, limitations, and ICAs 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?

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