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

SH536NE

Installation of Teledyne Avionics and Avionics Specialties, Inc. Power Analyzer and Recorder No. SL17010 and No. SL17073. Held by Aerosonic Corporation, which holds 37 approved modifications in all. Last revised August 14, 2007. System: instruments and avionics.

What it applies to

Kind of product
Aircraft
Design holder
Bell Helicopter Textron (Canada); Bell Helicopter Textron (Canada)
Models
206L-4, 206L-3
Type certificates
H2SW, H2SW
On this site
Bell 206 JetRanger and LongRanger 1,455 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.