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The TSO for aviation headsets is C139, which includes requirements to withstand extreme heat and cold, decompression, and electromagnetic interference. [14] Some commercial airlines require the use of TSO-compliant headsets, as part of their operations manual. [15] This is a choice by the airline, not an FAA requirement. [16]
David Clark Company, Inc. (DCC) is an American manufacturing company.DCC designs and manufactures a wide variety of aerospace and industrial protective equipment, including pressure-space suit systems, anti-G suits, headsets, and several medical/safety products.
Triggers a flashing white light on the same marker beacon receiver used for the outer and middle markers; also a series of audio tone 'dots' at a frequency of 3,000 Hz in the headset. On some older marker beacon receivers, instead of the "O", "M" and "I" indicators (outer, middle, inner), the indicators are labeled "A" (or FM/Z), "O" and "M ...
After an acquisition in 1974, HEICO focused on replacement parts for commercial aviation as well as providing maintenance and repair services. Since the 1990s, a significant part of HEICO's business strategy has been acquiring niche product and service providers in the aviation, defense, space, medical, telecommunications, and electronics ...
The company was founded by Ira Allen Eichner in 1951, to supply radios and other equipment to the commercial aviation industry. [4] I.A. Allen Industrial was incorporated in 1955, renamed Allen Aircraft Radio (AAR) in 1962, and became AAR CORP. in 1970. [4]
The "A20 Aviation Headset" was released in 2010 as the successor to the "Aviation Headset X" (aka A10). [26] [27] It has a claimed battery life of 45 hours (using two AA batteries) or can be powered by the airplane's electrical system. There are two versions, one with Bluetooth and one without. [28] An updated version of the A20 was released in ...
Similar standards are maintained by other aviation authorities. For example European Technical Standard Orders (ETSO) by EASA for the European Union, [3] with limited reciprocal equivalence on a per-country basis. [4] These often have the same numbers as FAA TSOs. For example, the FAA TSO for aviation headsets is C139.
In 1980, the company entered the aviation market, supplying Lufthansa with aviation headsets. [9] [10] The company began producing modern wireless microphones in 1982, the same year founder Fritz Sennheiser handed the management of the company over to his son, Jörg Sennheiser.