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

SA3742NM

Operation of airplane on unleaded automotive gasoline, 87 minimum anti- knock index and leaded automotive gasoline, 88 minimum anti-knock index(RON+MON)/2. Held by Precise Flying Service. Last revised September 23, 1987. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Bellanca Aircraft Corporation
Models
DW-1 (Eagle)
Type certificate
A4NW
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.