Reports > Aviation > Abstract of "Examination of Part 135 Controlled Flight into Terrain Accidents..." Title: Examination of Part 135 Controlled Flight into Terrain Accidents as a Basis for Enhanced Ground Proximity Warning Systems Authors: Mortimer, R.G. and von Thaden, T.L. Reference: Proc. of the Human Factors and Ergonomics Soc., 1999, pp. 11-15. Report No.: R0320302 Total Fee: US$17.00 File Size: 1.1 MB Abstract In 1998 the Federal Aviation Administration (FAA) proposed the installation of Enhanced Ground Proximity Warning devices (EGPWS) in all turbine powered aircraft with six or more passenger seats, operating under Federal Aviation Regulation Part 135, to reduce "Controlled Flight Into Terrain" (CFIT). CFIT accident experience of Part 135 operations has not been evaluated by the FAA. We analyzed all commuter and charter aircraft crashes of this type using NTSB aviation accident data from 1983 to 1998. There were 15 crashes with CFlT criteria. We asked 15 experienced pilots to examine the narratives of the crashes and to estimate the probability that EGPWS would have allowed the crew to avoid these crashes. Based on the ratings, the median probability that Part 135 crashes would be avoided using EGPWS is 58%. Human factors issues associated with EGPWS are discussed. To purchase a copy of this article, click the Buy Now link below. An electronic (PDF) copy will be sent within 24 hours of order receipt. To avoid delivery delays, refer to the file size indicated above and check your e-mail system message and storage capacity before ordering. (Note: Cost of this article includes a copyright fee paid to the original copyright owner). Changes last made August, 2007 Copyright© 2002, 2007 Beta Research, Inc.. All rights reserved. Reproduction in whole or in part in any form without express written permission is strictly prohibited