SR09347RC
Battery powered helicopter emergency egress lighting system kit. Not approved for 412EP aircraft serial numbers 36191 and subsequent. Held by Aeronautical Accessories, which holds 5 approved modifications in all. Last revised October 23, 2002. System: electrical power.
What it applies to
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 22, 2026.