FAA · Supplemental Type Certificate
STC SA1458GL
Installation of a Cleveland nose wheel.
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 (19)
- 2A4 Twin Commander Aircraft Corporation · 695
- 2A4 Twin Commander Aircraft Corporation · 695A
- 2A4 Twin Commander Aircraft Corporation · 690B
- 2A4 Twin Commander Aircraft Corporation · 681
- 2A4 Twin Commander Aircraft Corporation · 695B
- 2A4 Twin Commander Aircraft Corporation · 720
- 2A4 Twin Commander Aircraft Corporation · 560F
- 2A4 Twin Commander Aircraft Corporation · 690D
- 2A4 Twin Commander Aircraft Corporation · 690
- 2A4 Twin Commander Aircraft Corporation · 680FL(P)
- 2A4 Twin Commander Aircraft Corporation · 680T
- 2A4 Twin Commander Aircraft Corporation · 680
- 2A4 Twin Commander Aircraft Corporation · 680-E
- 2A4 Twin Commander Aircraft Corporation · 680FL
- 2A4 Twin Commander Aircraft Corporation · 680V
- 2A4 Twin Commander Aircraft Corporation · 680W
- 2A4 Twin Commander Aircraft Corporation · 690A
- 2A4 Twin Commander Aircraft Corporation · 690C
- 2A4 Twin Commander Aircraft Corporation · 685
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗