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Aircraft structures

STC SA1689WE

FAA DRS lists SA1689WE as Current · Reissued, held by Sierra Industries Ltd., for Textron Aviation 172, Textron Aviation 172A, and Textron Aviation 172B, and 12 more aircraft configurations. Recorded change: Installation of drooped ailerons in flaps down mode, contoured wing leading edge and wing stall fences. (172A, B, C, D, E, F, G, H, K, L, M, N, P LANDPLANES AND FLOAT-PLANES) (172 LANDPLANES ONLY). Snapshot dated June 30, 2026.

FAA-listed holder
Sierra Industries Ltd.
Aircraft configurations
15
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of drooped ailerons in flaps down mode, contoured wing leading edge and wing stall fences. (172A, B, C, D, E, F, G, H, K, L, M, N, P LANDPLANES AND FLOAT-PLANES) (172 LANDPLANES ONLY).

SA1689WE 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: Textron Aviation 172, Textron Aviation 172A, and Textron Aviation 172B, and 12 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Textron Aviation 1723A12Textron Aviation 172A3A12Textron Aviation 172B3A12Textron Aviation 172C3A12Textron Aviation 172D3A12Textron Aviation 172E3A12Textron Aviation 172F (USAF T-41A)3A12Textron Aviation 172G3A12Textron Aviation 172H (USAF T-41A)3A12Textron Aviation 172I3A12Textron Aviation 172K3A12Textron Aviation 172L3A12Textron Aviation 172M3A12Textron Aviation 172N3A12Textron Aviation 172P3A12

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Textron Aviation 172 and Textron Aviation 172A, and 13 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?

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