SE1PC
Installation of AC Spark Plug P/N SR47P. Held by Aviation Services INC, which holds 2 approved modifications in all. Last revised January 8, 1965. System: engine.
What it applies to
- Kind of product
- Engine
- Design holder
- Rolls-Royce plc
- Models
- Gipsy Queen 70 MK2
- Type certificate
- E-310
- 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 7, 2026.