Appendix A Alert and Maintenance INFO List A-26 
 
Message Explanation  Advice 
No. #n 
Wing-Conning(Communi
cation failed, Main LAN) 
Communication with No. 
#n Wing-Conning cannot 
be performed via Main 
LAN. 
Check the condition of No. #n Wing-Conning 
and Main LAN.   
If it cannot be recovered after you check the 
connection of the equipment cable in 
power-off status and restart, turn off the 
power of the device and contact your 
distributor. 
No. #n 
Wing-Conning(Communi
cation failed, Sub LAN) 
Communication with No. 
#n Wing-Conning cannot 
be performed via Sub 
LAN. 
Check the condition of No. #n Wing-Conning 
and Sub LAN.   
If it cannot be recovered after you check the 
connection of the equipment cable in 
power-off status and restart, turn off the 
power of the device and contact your 
distributor. 
Port Main 
Propeller(invalid) 
There is a format error or 
a status error of the data. 
Check the sensor condition. 
Port Main Propeller(not 
plausible) 
There is a range error of 
the data. 
Check the sensor condition. 
Port Main 
Propeller(unavailable) 
The data cannot be 
received. 
Check the condition of the sensor and the 
communication path. 
Position(doubtful) 
The integrity of Position 
cannot be verified. 
Check the sensor condition. Switch to a 
sensor in good condition. 
Position(failed) 
The Position has been 
rejected by the integrity 
verification. 
Check the sensor condition. Switch to a 
sensor in good condition. 
ROT(invalid) 
There is a format error or 
a status error of the ROT 
data. 
Check the sensor condition. 
ROT(unavailable)  The ROT data cannot be 
received. 
Check the condition of the sensor and the 
communication path. 
Rudder #n(invalid)  There is a format error or 
a status error of the 
Rudder data. 
Check the sensor condition. 
Rudder #n(not plausible)  There is a range error of 
Rudder data. 
Check the sensor condition. 
Rudder #n(unavailable)  The Rudder data cannot 
be received. 
Check the condition of the sensor and the 
communication path. 
Rudder(Communication 
failed, Main LAN) 
Communication with 
Rudder cannot be 
performed via Main LAN. 
Check the condition of Rudder and Main LAN. 
If it cannot be recovered after you check the 
connection of the equipment cable in 
power-off status and restart, turn off the 
power of the device and contact your 
distributor. 
Rudder(Communication 
failed, Sub LAN) 
Communication with 
Rudder cannot be 
performed via Sub LAN. 
Check the condition of Rudder and Sub LAN.   
If it cannot be recovered after you check the 
connection of the equipment cable in 
power-off status and restart, turn off the 
power of the device and contact your 
distributor.