Originally Posted by
leffsu
Hi, everyone
The PDC told us to fly hdg 248° when airborne AND we tuned 248° in HDG window. The departure rwy heading is 263……
Question is: when we airborned , PULL the HDG and FMA showed TRK in HDG-VS FD mode??
How could this happened ？Bug or normal？
As I found on FCOM it should be in HDG mode……
From the FCOM:
”HDG/TRK PRESET
GENERAL The system has a HDG/TRK preset function for takeoff and go-around. If the flight crew decides not to fly the flight plan after takeoff or go-around, the flight crew can turn the HDG/TRK knob on the FCU to preset a heading or a track. The set value remains displayed in the FCU HDG/TRK window until the flight crew pulls the knob.
AT TAKEOFF If the flight crew presets the HDG/TRK before takeoff and up to 30 ft RA, NAV disarms. The preset value remains displayed in the HDG/TRK window (even when RWY TRK engages at 50 ft RA). When the flight crew pulls the HDG/TRK knob (at least 5 s after liftoff), HDG or TRK mode engages. The aircraft follows the preset target.”
If You have acted as per above, You should have gotten HDG displayed once pulled.
Have You tried recycling the FPV pushbutton?