Acme Aero, a manufacturer of backcountry and short takeoff and landing aftermarket products, received supplemental type certification for its Black Ops (main gear) and Stinger (tailwheel) shock absorbers for Piper PA–12, PA–14, PA–18, J–3, and PA–11 and CubCrafters CC–18 aircraft.
Source: aopaNew STC for STOL enthusiasts