SA1933CE
Operation on unleaded and/or leaded automotive gasoline, 87 minimum antiknock index and leaded automotive gasoline, 88 minimum antiknock index (RON + MON)/2. Intermixing with aviation gasoline also approved. Held by Petersen Aviation INC, which holds 167 approved modifications in all. Last revised June 23, 1992. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Lavia Argentina S.A. (Laviasa); Lavia Argentina S.A. (Laviasa)
- Models
- PA-25-235, PA-25
- Type certificates
- 2A10, 2A10
- On this site
- Piper PA-25 Pawnee 455 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 5, 2026.