SR11922AC
Demonstration of aircraft critical equipment and antenna systems tolerance of radio frequency interference (RFI) from intentional or spurious transmissions from certain Portable Electronic Devices (PEDs). Held by Liberty Partners INC., which holds 2 approved modifications in all. Last revised March 6, 2025. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Bell Textron Inc.
- Models
- 212
- Type certificate
- H4SW
- On this site
- Bell 212 59 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.