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

SH4935NM

Fabrication of Onboard Systems Model E-72 Cargo Hook Load Cell System in accordance with FAA approved Onboard Systems Master Drawing List No. 155-012-00, Revision 3, dated December 10, 1996, or later FAA approved revision; and installation of this system in accordance with FAA approved Onboard Systems Owner's Manual No. 120-019-00, Revision 3, dated December 10, 1996, or later FAA approved revision. Inspect load cell in accordance with Section 5 of Onboard Systems Owner's Manual No. 120-019-00, dated December 10, 1996, or later FAA approved revision. Held by Onboard Systems International, which holds 51 approved modifications in all. Last revised September 20, 2007. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Bell Helicopter Textron Canada Limited; Bell Helicopter Textron Canada Limited; Bell Helicopter Textron Canada Limited; Bell Helicopter Textron Canada Limited; Bell Helicopter Textron Canada Limited
Models
206L, 206L-1, 206L-3, 206L-4, 407
Type certificates
H2SW, H2SW, H2SW, H2SW, H2SW
On this site
Bell 206 JetRanger and LongRanger 1,455 registered
Bell 407 984 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 8, 2026.