SE2591CE
Add unleaded automotive gasoline, 87 minimum antiknock index and leaded automotive gasoline, 88 minimum antiknock index(RON + MON)/2, per ASTM Specification D-439. Held by Petersen Aviation INC, which holds 167 approved modifications in all. Last revised March 6, 1990. System: engine.
What it applies to
- Kind of product
- Engine
- Design holder
- Olson George Company; Olson George Company; Olson George Company; Olson George Company; Olson George Company
- Models
- Scarab Series 29, Scarab Series 30, Scarab Series 40, Scarab Series 50, Scarab Series 28
- Type certificates
- E-2, E-2, E-2, E-2, E-2
- 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.