FAA · Supplemental Type Certificate
STC SA937CE
Installation of leading edge cuffs, stall fences, droop wing tips, and vortex generators on rear engine lower cowling.
What is an STC?
A Supplemental Type Certificate authorizes a major modification or alteration to an FAA-certificated aircraft. STCs are how operators legally install new avionics, change fuel systems, add floats, swap engines, etc. — every change beyond a minor modification needs one.
Applicable aircraft (18)
- A6CE Textron Aviation Inc. · 337
- A6CE Textron Aviation Inc. · 337A
- A6CE Textron Aviation Inc. · 337B
- A6CE Textron Aviation Inc. · 337C
- A6CE Textron Aviation Inc. · 337D
- A6CE Textron Aviation Inc. · 337E
- A6CE Textron Aviation Inc. · 337F
- A6CE Textron Aviation Inc. · 337G
- A6CE Textron Aviation Inc. · 337H
- A6CE Textron Aviation Inc. · M337B
- A6CE Textron Aviation Inc. · P337H
- A6CE Textron Aviation Inc. · T337B
- A6CE Textron Aviation Inc. · T337C
- A6CE Textron Aviation Inc. · T337D
- A6CE Textron Aviation Inc. · T337E
- A6CE Textron Aviation Inc. · T337F
- A6CE Textron Aviation Inc. · T337G
- A6CE Textron Aviation Inc. · T337H
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗