The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · reissued

SE55WE

Modification of fuel injection manifold valve P/N 626547 to the P/N 631427 or P/N 636326 configuration. Held by Aar Aircraft Services INC. D/B/A Aar Aircraft Services-Oklahoma. Last revised March 5, 1999. 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
Models
IO-470 Series, TSIO-470 Series, IO-470 Series, IO-520 Series, TSIO-520 Series
Type certificates
3E1, 3E3, E-273, E5CE, E8CE
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 21, 2026.