FAA · Supplemental Type Certificate
STC SR00207BO
Installation of Altair Avionics Corporation Data Transmission Unit in accordance with instructions listed in attached AML DTU-T-225-3, Rev -, dated November 3, 2004 or later FAA-approved revision.
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 (7)
- H2SW Bell Helicopter Textron (Canada) · 206A
- H2SW Bell Helicopter Textron (Canada) · 206A-1 (OH-58A)
- H2SW Bell Helicopter Textron (Canada) · 206B
- H2SW Bell Helicopter Textron (Canada) · 206L
- H2SW Bell Helicopter Textron (Canada) · 206L-1
- H2SW Bell Helicopter Textron (Canada) · 206L-3
- H2SW Bell Helicopter Textron (Canada) · 206L-4
Specific sections
- Sec. 111
- Sec. 113
- Sec. 115
- Sec. 117
- Sec. 119
- Sec. 120
- § 21.47
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗