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Approved modifications · supplemental type certificate · current · reissued

SE1997CE

Addition of following approved fuel: unleaded automotive gasoline, 87 minimum antiknock index and leaded automotive gasoline, 88 minimum antiknock index (RON+MON)/2, also intermixing with aviation gasoline. Held by Petersen Aviation INC, which holds 167 approved modifications in all. Last revised June 28, 1984. System: engine.

What it applies to

Kind of product
Engine
Design holder
Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors
Models
O-470-J, O-470-E, O-470-A, O-470-K, O-470-L, O-470-S, O-470-R
Type certificates
E-273, E-273, E-273, E-273, E-273, E-273, E-273
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.