Figure 58: List of inconsistent flight heads.

Figure 60: First point coordinates.

Figure 61: Last point coordinates.

Figure 63: Flight legs at midnight.

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By Nicu Stancioi April 2002

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Import ETMS tool’s goal is to convert a list of many flights provided by ETMS application into the standard predefined AERO2K structure.

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The ETMS application generates two text files for a period of time. These files have always the following names:
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Flight.txt – the flight heads.

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Flight_chord.txt – the flight legs.

A flight head that is saved in Flight.txt contains general information about a flight such as the call sign, departure time, arrival time, aircraft type, departure and arrival airports, etc. Each flight head has an associated list of flight legs, which represent the flight’s status in different moments. These legs can be found in Flight_chord.txt file. A flight leg describes the flight’s status through its latitude, longitude, elevation, ground speed, etc. The structure of the two text files is given in the next paragraphs.
2.1. ETMS flight heads text file (Flight.txt)
Flight.txt contains flights for one or several consecutive days. Its structure is shown in Table 55.

Table 55: ETMS traffic text file.

Nr  Field Name  Description 
1  Init_char  Currently not used 
2  Flight_key  Combination of the ETMS-generated flight_UID and the flight_id 
3  Flight_date  The date that the flight was operated 
4  Flight_uid  The flight identifier to ETMS 
Flight_id  "User friendly" identifier for the flight 
6  First_msg_time  The timestamp of the flight's first message 
7  First_msg_code  The internal numeric message type for the first message (for debugging only) 
8  Last_msg_time  The timestamp of the flight's last message 
9  Last_msg_code  The internal numeric message type for the last message (for debugging only) 
Msg_count  Number of messages received for the flight 
11  Schd_dep_airport  The scheduled departure airport 
12  Schd_arr_airport  The scheduled arrival airport 
13  Schd_dep_time  The scheduled departure time 
14  Schd_arr_time  The scheduled arrival time 
Time1  Unused 
16  Time2  Unused 
17  Plan_dep_center  Single code character for the Air Traffic Control of the planned departure airport 
18  Plan_dep_time  The estimated time of departure for the planned departure airport 
19  Plan_arr_center  Single code character for the Air Traffic Control of the planned arrival airport 
Plan_arr_time  The estimated time of arrival for the planned arrival airport 
21  Act_dep_center  Single code character for the Air Traffic Control of the actual departure airport 
　
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本文鏈接地址：AERO2K Flight Movement Inventory Project Report(54)