SR03512NY
rbine Temperature, Fuel Pressure, Dual Ammeter, Dual Voltmeter and Gas Producer Tachometer indicator gauge replacements. Held by Rilpa Enterprises, LTD (Canada), which holds 10 approved modifications in all. Last revised March 13, 2015. System: instruments and avionics.
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 7, 2026.