ST12466CH
Installation of Seat Blocker Interior Reconfiguration. Held by Sts Engineering Solutions, LLC, which holds 2 approved modifications in all. Last revised August 28, 2026. System: cabin, seats and restraints.
What it applies to
- Kind of product
- Aircraft
- Design holder
- ATR – GIE Avions de Transport Régional; ATR – GIE Avions de Transport Régional
- Models
- ATR42-500, ATR72-212A
- Type certificates
- A53EU, A53EU
- On this site
- Atr-Gie Avions De Trnsp Region ATR42 6 registered
Atr-Gie Avions De Trnsp Rgnl ATR 72 14 registered - The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 20, 2026.