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Section 2 – System Overview
Boot up and Pre-Flight Operations
Upon cold start, the WQAR FAIL light will blink slowly while it initializes the
hardware. The FAIL light will blink quickly as the OPS software boots,
determines the signal and speed of the incoming flight data, and adapts itself
to the aircraft. During this time, the output FAIL discrete will not be set. After
boot up is complete, the FAIL light will extinguish and the LCD display will
momentarily show STARTUP BIT COMPLETE followed by the normal SYSTEM
STATE display as shown in Section 3 which indicates the WQAR is ready for
operation. On LRUs without MOD DOT 3 status, the LCD display may be
dimmed during the boot up process which takes approximately two minutes.
In-Flight Operations
When the aircraft is ready, the WQAR will begin recording all incoming ARINC
717 and report data from the acquisition unit. During flight, the data will be
periodically compressed to ready it for transmission. An encrypted copy is
also saved onto an accessible removable CF card (P/N 2234641-008).
Post Flight Operations
After landing, the RF Interlocks will disengage and the radio(s) will power on
and make contact with the Wireless Ground Communication Manager
(WGCM). However, if the optional Recording Completion Delay (RCD) is
enabled, flight data will not transmit until the RCD has expired (See Section 1,
ACMS Reporting, for RCD details). During this delay, the WQAR will continue
to receive final airborne data and ACMS reports (if present). If the WQAR
determines that it has recorded the minimum amount of data, it will
compress this remaining data and close the file. Finally, it will send the flight
data to the WGCM if it is permitted to transmit at the current destination
(e.g. not roaming, etc).
Use and disclosure shall be in accordance with the proprietary information notice and DCS on page i.
UG2243800-4XX
May 28, 2019
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