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Flight controls

STC SA1627WE

FAA DRS lists SA1627WE as Current · Reissued, held by Sierra Industries Ltd., for Textron Aviation FT337GP, Textron Aviation 337, and Textron Aviation 337A, and 17 more aircraft configurations. Recorded change: Installation of drooped ailerons in flaps down mode, recontoured wing leading edge, stall fences, aileron centering springs, conical cambered wing tips and flap actuated elevator trim spring. Snapshot dated June 30, 2026.

FAA-listed holder
Sierra Industries Ltd.
Aircraft configurations
20
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of drooped ailerons in flaps down mode, recontoured wing leading edge, stall fences, aileron centering springs, conical cambered wing tips and flap actuated elevator trim spring.

SA1627WE 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 FT337GP, Textron Aviation 337, and Textron Aviation 337A, and 17 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Textron Aviation FT337GPA23EU
Textron Aviation 337A6CETextron Aviation 337AA6CETextron Aviation 337BA6CETextron Aviation 337CA6CETextron Aviation 337DA6CETextron Aviation 337EA6CETextron Aviation 337FA6CETextron Aviation 337GA6CETextron Aviation 337HA6CETextron Aviation M337BA6CETextron Aviation P337HA6CETextron Aviation T337BA6CETextron Aviation T337CA6CETextron Aviation T337DA6CETextron Aviation T337EA6CETextron Aviation T337FA6CETextron Aviation T337GA6CETextron Aviation T337HA6CETextron Aviation T337H-SPA6CE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Textron Aviation FT337GP and Textron Aviation 337, and 18 more aircraft configurations model, serial range, and configuration?
  2. 02Which control configuration, rigging, limitations, and inspections 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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