737 Flight Crew Operations Manual
Flight Instruments, Displays -
PFD/ND – Displays
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D6-27370-866-EGP 10.11.33
Roll/Yaw Asymmetry Alert
1 Roll/Yaw Asymmetry Alert (amber)
Autopilot is engaged in single channel and requires more than 75% of the
autopilot roll authority due to unusual asymmetric forces acting on the airplane’s
longitudinal axis.
The ROLL/YAW ASYMMETRY alert:
• replaces the active autopilot status annunciation.
• is replaced with ROLL AUTHORITY when 100% of the autopilot roll
authority is required.
• is replaced by the active autopilot status annunciation when less than
50% of the autopilot roll authority is required.
2 Bank Pointer (amber)
With ROLL/YAW ASYMMETRY or ROLL AUTHORITY alert active:
• bank pointer outline will turn amber.
With ROLL AUTHORITY alert active:
• bank pointer will fill amber if bank angle exceeds 15 degrees.
3 Slip/Skid Indication (amber)
With ROLL/YAW ASYMMETRY or ROLL AUTHORITY alert active:
• slip/skid indication outline will turn amber.
• slip/skid indication will fill amber if deflected greater than 25% of its
width,
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ROLL/YAW
ASYMMETRY
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September 15, 2016
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