FAA · Supplemental Type Certificate
STC SA1904WE
Installation of Vibration Isolation Products (VIP) engine mount P/N VIP-50804-10 on various aircraft as shown on FAA Approved Model List (AML) No. SA1904WE.
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 (11)
- 6A1 Twin Commander Aircraft Corporation · 520
- 5A4 Textron Aviation Inc. · B50
- 5A4 Textron Aviation Inc. · C50
- 5A4 Textron Aviation Inc. · D50
- 5A4 Textron Aviation Inc. · D50A
- 5A4 Textron Aviation Inc. · D50B
- 5A4 Textron Aviation Inc. · D50C
- 5A4 Textron Aviation Inc. · D50E
- A-734 Frakes Aviation · G-44
- A-734 Frakes Aviation · G-44A
- A-734 Frakes Aviation · SCAN Type 30
Specific sections
- § 21.47
- Sec. 111
- Sec. 113
- Sec. 115
- Sec. 117
- Sec. 119
- Sec. 120
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗