DART Aerospace FAA Certification for Cable Cutter on Airbus H145 BK117 D-3

This article is based on an official press release from DART Aerospace.

On May 5, 2026, DART Aerospace announced the receipt of an updated Federal Aviation Administration (FAA) Supplemental Type Certificate (STC). According to the company’s press release, this certification officially approves the installation of its extended Cable Cutter system on the Airbus H145 BK117 D-3 helicopter.

Wire strikes remain one of the most significant hazards for low-flying rotorcraft, particularly those engaged in Helicopter Emergency Medical Services (HEMS), search and rescue (SAR), and utility operations. By securing this STC, DART Aerospace provides operators of the advanced five-blade H145 variant with a critical, passive safety mechanism designed to prevent catastrophic mid-air collisions with power lines and cables.

We note that this certification expands DART’s existing portfolio of wire-strike protection systems, which already covered earlier iterations of the H145 family, ensuring that modern fleets can maintain rigorous safety standards as they upgrade their aircraft.

Engineering the Cable Cutter System

Passive Protection for High-Risk Missions

The DART Cable Cutter system operates as a passive safety device. As detailed in the provided research report, the system features both upper and lower cutters equipped with high-strength blades. Deflectors are integrated into the design to guide unseen wires away from the windshield and rotor hub, funneling them directly into the cutting mechanism.

The engineering behind the system is robust. Testing verifies that the DART cutter can sever cables with a tensile strength of up to 14,000 lbs. The primary objective is to stop wires from breaching the cockpit or entangling the main and tail rotor flight controls.

“The primary goal is to prevent catastrophic damage by stopping wires from entering the cockpit,” according to the provided industry research report.

The Airbus H145 BK117 D-3 Platform

Expanding Capabilities for Modern Fleets

The Airbus H145, specifically the BK117 D-3 variant, is a premier aircraft in the light twin-engine category. The D-3 model is distinguished by its innovative five-blade main rotor system, which Airbus designed to provide a smoother flight experience and an additional 150 kg (approximately 330 lbs) of useful load capacity compared to its predecessors.

Because of its compact footprint and rear clamshell doors, the H145 D-3 is heavily utilized globally for air ambulances, law enforcement, and offshore energy transport. Prior to this May 2026 update, DART’s cable cutter STC already covered older variants in this family, including the Airbus H145 / EC145 T2 and the BK117 D-2, according to the company’s background data.

The Deadly Threat of Wire Strikes

Industry Statistics and Safety Imperatives

Helicopters frequently operate at low altitudes, often below 500 feet, where power lines, telephone wires, and guy-wires present a nearly invisible threat to pilots, especially against complex terrain or in poor lighting conditions.

Data from the National Transportation Safety Board (NTSB) highlights the severity of this hazard, recording 124 fatalities in the United States attributed to wire strikes between 1994 and 2018. Furthermore, aerospace medical studies cited in the research report indicate that in fatal wire strikes, 100% of victims suffered major head and neck injuries, frequently sustaining basilar skull fractures due to impact with flight controls.

AirPro News analysis

At AirPro News, we view the continuous updating of STCs by aftermarket manufacturers like DART Aerospace as a vital component of the aviation safety ecosystem. As Original Equipment Manufacturers (OEMs) like Airbus innovate, such as introducing the five-blade rotor on the D-3, third-party safety equipment must keep pace. The rigorous FAA STC process ensures that these retrofits do not compromise the airworthiness of modern, highly advanced airframes. For global operators, the availability of a 14,000-lb capable cable cutter for the newest H145 variant is not just a regulatory checkbox; it is a life-saving necessity that turns potentially fatal collisions into recoverable incidents.

Frequently Asked Questions (FAQ)

What is an FAA STC?

A Supplemental Type Certificate (STC) is a document issued by the FAA approving a major modification or repair to an existing type-certified aircraft. It signifies that the FAA has thoroughly reviewed the engineering and safety of the modification.

What is the tensile strength capacity of the DART Cable Cutter?

According to the company’s specifications, the DART Cable Cutter system is tested and verified to cut through cables with a tensile strength of up to 14,000 lbs.

Who is DART Aerospace?

DART Aerospace is a privately held manufacturer of helicopter equipment and aftermarket accessories. The company has been in operation for 50 years, holds over 2,000 STC certifications, and ships roughly 30,000 parts annually to 120 countries.

Sources

• DART Aerospace Press Release