SR03465CH

Install Airwolf Aerospace, LLC Tension-Torsion Strap Assemblies, P/N AA-ECD-084-280, or AA-ECD-084-480. Held by Airwolf Aerospace LLC, which holds 5 approved modifications in all. Last revised June 8, 2015. System: other and general.

What it applies to

Kind of product: Aircraft
Design holder: The Enstrom Helicopter Corporation; The Enstrom Helicopter Corporation; The Enstrom Helicopter Corporation; The Enstrom Helicopter Corporation; The Enstrom Helicopter Corporation; The Enstrom Helicopter Corporation; The Enstrom Helicopter Corporation; The Enstrom Helicopter Corporation; The Enstrom Helicopter Corporation; The Enstrom Helicopter Corporation; The Enstrom Helicopter Corporation; The Enstrom Helicopter Corporation; The Enstrom Helicopter Corporation; The Enstrom Helicopter Corporation
Models: 280, 280C, 280F, 280FX, 480, 480B, F-28, F-28A, F-28C-2, F-28C-2R, F-28C, F-28F-R, F-28F, TH-28
Type certificates: H1CE, H1CE, H1CE, H1CE, H1CE, H1CE, H1CE, H1CE, H1CE, H1CE, H1CE, H1CE, H1CE, H1CE
On this site: Enstrom Helicopter Corp 480 73 registered
Enstrom 280 Shark 65 registered
Enstrom F-28 147 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.