STC ST04211AT

Replace original equipment Nickel-Cadmium (NiCd) main batteries with Concorde Lead-Acid, main batteries along with associated hardware

Current Issued Aircraft Large Airplane Rev 06/12/2015 View PDF on drs.faa.gov ↗

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 (5)

A21NM Airbus Defense and Space S.A. · C-295
A21NM Airbus Defense and Space S.A. · CN-235-100
A21NM Airbus Defense and Space S.A. · CN-235-200
A21NM Airbus Defense and Space S.A. · CN-235-300
A21NM Airbus Defense and Space S.A. · CN-235

Certification basis — 14 CFR

Part 21
Part 25
Part 26

Specific sections

Sec. 111
Sec. 113
Sec. 115
Sec. 117
Sec. 119
Sec. 120
§ 21.47
§ 26.11
§ 26.47
§ 21.101
§ 21.115
§ 21.120

The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗