The Radar Altimeter RA-4500 – an accurate, affordable and reliable safety solution

The RA-4500 integrates seamlessly with compatible glass cockpit displays to display DH and Height Above Altitude. NVG display available, ARINC 429 capable, TSO certified and STC approved.

It also meets HEMS mandate for Radar Altimeter equipage for Part 135 and Air Med Operations. Backed by an industry leading warranty and excellent customer support.

Designed for applications such as helicopter and seaplane operations where accuracy is critical, the RA-4500 Radar Altimeter provides precise AGL information from 2,500 feet to ground level.

FreeFlight Systems’ radar altimeters are robust and reliable systems that work consistently in the most demanding applications including rotorcraft low altitude hover and terrain transitions. FreeFlight’s radar altimeters have proven performance in the most challenging and critical segments of flight including special mission operations over desert regions. Tens of thousands of FreeFlight radar altimeter units are in operation today.

Download RA-4500 Specifications

Radio altimeters for Part 135 rotorcraft operations, and EMS.

[Doc. No. FAA-2010-0982, 79 FR 9973, Feb. 21, 2014]

(a) After April 24, 2017, no person may operate a rotorcraft unless that rotorcraft is equipped with an operable FAA-approved radio altimeter, or an FAA-approved device that incorporates a radio altimeter, unless otherwise authorized in the certificate holder’s approved minimum equipment list.

(b) Deviation authority. The Administrator may authorize deviations from paragraph (a) of this section for rotorcraft that are unable to incorporate a radio altimeter. This deviation will be issued as a Letter of Deviation Authority. The deviation may be terminated or amended at any time by the Administrator. The request for deviation authority is applicable to rotorcraft with a maximum gross takeoff weight no greater than 2,950 pounds. The request for deviation authority must contain a complete statement of the circumstances and justification, and must be submitted to the nearest Flight Standards District Office, not less than 60 days prior to the date of intended operations.