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

SR02048AT

Installation of Auxiliary Battery Kit in a Bell 206L-4 in accordance with Aeronautical Accessories Drawing List, Report No. AA-99115, dated 11-19-99 or later FAA approved revision. Held by Bell Helicopter Textron INC., which holds 366 approved modifications in all. Last revised June 6, 2011. System: electrical power.

What it applies to

Kind of product
Aircraft
Design holder
Bell Helicopter Textron (Canada)
Models
206L-4
Type certificate
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 21, 2026.