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

SH71NW

Installation of electric weighing system. Held by Onboard Systems, which holds 15 approved modifications in all. Last revised April 28, 1987. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Eurocopter France; Eurocopter France; Eurocopter France
Models
SA.316B Alouette III, SA.319B Alouette III, SE.3160 Alouette III
Type certificates
H1IN, H1IN, H1IN
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.