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

SA01291SE

Installation of a McCauley 1A101/HCM 6948 propeller in accordance with N. A. Waterhouse & Associates Aeronautical Consulting Engineers Document NW014-NAW-003, Revision IR, dated October 13, 2003, or later FAA approved revision. Held by Can-Am Aerospace LLC, which holds 2 approved modifications in all. Last revised January 19, 2010. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
Cessna Aircraft Company
Models
150M
Type certificate
3A19
On this site
Cessna 150 7,993 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 21, 2026.