CHAPTER 4
REFERENCE GUIDE
EFD1000H PFD Pilot’s Guide
Page 4-16
091-00012-001 REV C
4.2.3.3. Altitude Level-Off and Deviation Alert
The Altitude (level-off ) Alert is ARMED and rendered on-screen as a yellow alert flag
next to the Selected Altitude value when the aircraft altitude transitions to within
200 feet or 15 seconds of reaching the selected altitude (
Figure 4-23
). If an optional
Sonalert tone generator device is installed, a one-second tone also sounds. Once
the current altitude is within ± 25 feet of the Selected Altitude, the Altitude Alert
extinguishes (
Figure 4-24
).
After reaching the Selected Altitude, if the aircraft’s current altitude differs from the
selected altitude by more than 200 feet, the yellow alert flag flashes. If an optional
Sonalert tone generator device is installed, a one-second tone also sounds.
Figure 4-22
Altitude Bug and Altitude Alerter Enabled
NOTE
Rotating the knob quickly will change the altitude
value in larger increments.
Figure 4-23
Altitude Alert
Figure 4-24
Altitude Alert Extinguishes at
Selected Altitude
NOTE
Setting the Altitude Alerter provides visual and aural cues to help the pilot capture and
maintain target altitudes. When set to a new altitude, the Alerter will illuminate a yellow flag
adjacent to the target altitude display and sound a one-second tone; 15 seconds (or 200 feet)
before the aircraft will reach the target altitude (based on current rate of climb or descent).
The yellow flag will extinguish once the target is reached. Subsequently, if the aircraft
deviates more than 200 feet above or below the target altitude, the flag will again illuminate,
and another one-second tone will sound to alert the pilot to the deviation.
