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Flight deck party line issues : an Aviation Safety Reporting System analysis
  • Published Date:
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Filetype[PDF-298.07 KB]

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  • TRIS Online Accession Number:
  • NTL Classification:
    NTL-AVIATION-AVIATION ; NTL-AVIATION-Air Traffic Control ; NTL-AVIATION-Aviation Human Factors ; NTL-AVIATION-Aviation Safety/Airworthiness
  • Format:
  • Abstract:
    This document describes an analysis of the Aviation Safety Reporting System

    (ASRS) database with regards to human factors aspects concerning the

    implementation of Data Link into the flightdeck. The ASRS database contains

    thousands of reports concerning actual or potential deficiencies that may

    compromise the safety of aviation operations in the National Airspace System

    (NAS). The purpose of this study was to determine the relative frequency of

    errors and consequences of decisions based on incorrect information received

    from the party line. In the current voice radio communications environment,

    flight crews claim to derive useful information from listening to the

    communications between controllers and other aircraft. Detailed analysis of

    the ASRS reports revealed two types of errors related to party line information

    (PLI): Those attributed to incorrect transmission of party line information

    (14 percent error rate) and those resulting from flight crew actions/decisions

    based on the reports concerning the transmitted information (26 percent error

    rate). Almost half (46 percent) of the reports concerning incorrect flight crew

    actions were a result of executing unauthorized clearances due to similar call

    signs. Further analysis of the incident reports also reveals party line

    informational elements that are determined useful by the flight crews. Based on

    the reports provided, conclusions are made with regards to the loss of the

    party line in a data link implementation. 147p. This study was conducted under

    DOD Contract Number DLA900-88-D-0393, and the CSERIAC Task Number was 93956- 19.

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