Abstract

The installation of a multiparameter recording system on TWA's DC-9 jet fleet has provided an important tool for advancing the maintenance state-of-the-art on twin-engine jet aircraft. The use of recorded data in establishing performance trends on engine and fire-warning systems is discussed. Real-time applications of computer data processing to facilitate field maintenance in trouble-shoot ing specific aircraft systems are described. Specific examples of trouble detection and definition are given and samples of recorded data are illustrated and their significance explained. Parameter expansion of the DC-9 recorder system and the use of this basic concept in more advanced sy —~ ~ ^>r the Boeing model 747 and supersonic transport (SST) aircraft are also presented.

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