- SEL SPD Flag:
Notes:
When the MCP selected target airspeed is invalid, an amber SEL SPD message shows above the Mach Airspeed Indicator MASI.
Select Speed Flag Possible Causes:Before replacing any component perform BITE if available. (DFCS/Fault Review/Fault History) (DFCS/Extended Maintenance/MCP/Channel)
1.Flight Control Computer (FCC)
2.Mode Control Panel (MCP)
3.Wiring
If the SEL SPD flag shows on one side only, replace the on-side FCC.
Replace the MCP if the SEL SPD flag appears on both the Captain and F/O airspeed indicator.
SEL SPD Flag:
Circuit Breakers:AFCS SYS A FCC (DC): P18-1 = D2.
AFCS SYS B FCC (DC): P6-2 = B3.
AFCS MCP DC1: P18-1 = D5.
AFCS MCP DC2: P6-2 = C3.
DEU#1 HOLD UP: P6-1 = D10.
DEU#1 PRIMARY: P18-2 = D5.
DEU#2 HOLD UP: P6-1 = D9.
DEU#2 PRIMARY: P6-1 = D11.
Applicable deferrals None