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

SA8728SW-D

Increase maximum ramp weight to 7140 pounds, increase takeoff weight to 7105 pounds and the addition of optional McCauley model 3AF32C515/82NLA-4.0 or Hartzell model PHC-C3YF-2UF/FC7663D-2Q or PHC-C3YF-2UF/FC7663DB-2Q propellers.. Held by Ram Aircraft Limited Partnership, which holds 174 approved modifications in all. Last revised September 11, 2008. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
Cessna Aircraft Company
Models
414A
Type certificate
A7CE
On this site
Cessna 414 Chancellor 605 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 7, 2026.