Technical data

Product Specification
HIF-2121/R5 CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 965-1176-601 REV: D SHEET 111
6.10.3.2.1 Activity Cumulative Counters
For each of the items listed in the table below a cumulative counter will be maintained in non-volatile memory. These
counters are never cleared after the time of manufacture.
Cumulative Fault Counters
Glideslope Cancels
Number of Flights
GPW INOP Time
TA&D INOP Time
TA&D Not Available Time
Terrain Inhibit Time
Flight Time
Operating Time
TABLE 6.10.3.2.1.T10:
6.10.3.2.2 INOP history
Each time any of the INOP events in the table below occurs in Air an INOP history record will be created in non-volatile
memory. Each INOP history record will contain a list of the current EGPWS faults for the event. Flight leg information and
GMT (if available) will also be included for each record.
INOP Event
GPW INOP
Mode 6 INOP
Bank Angle INOP
TA&D INOP
Envelope Modulation INOP
TABLE 6.10.3.2.2.T10:
6.10.3.3 Mode Alerting Activity
Two forms of mode alerting activity history are maintained; alert cumulative counters and alert history records. Alert
cumulative counters can be used to gather long term statistical data on alerts encountered. Alert history records can be used
to identify specific instances of certain alerts. Alert cumulative counters are intended for internal use and are not available
through the audio interface. Warning history information can be reviewed through the use of the voice output, RS-232
interface, or uploaded through the PCMCIA interface for later review.
6.10.3.3.1 Alert Cumulative Counters
For each of the alerts listed in the table below an alert cumulative counter will be maintained in non-volatile memory. Each
time the aircraft lands the associated counter will be incremented if its corresponding event occurred in the flight.