FAA · Supplemental Type Certificate
STC SA4-1007
Installation of balance weights(Brittain Aircraft P/N 3010) on leading edge of Navion ailerons.
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 (8)
- 2A1 Multitech Engineering Corporation · D-16
- 2A1 Multitech Engineering Corporation · D-16A
- A-782 Navion Aircraft Company Ltd. · Navion A (L-17C)
- A-782 Navion Aircraft Company Ltd. · Navion B
- A-782 Navion Aircraft Company Ltd. · Navion D
- A-782 Navion Aircraft Company Ltd. · Navion E
- A-782 Navion Aircraft Company Ltd. · Navion F
- A-782 Navion Aircraft Company Ltd. · Navion A (L-17B)
Specific sections
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗