9-1-76. Dual AFCS Failure.
AFCS SYSTEM SEL switch OFF.
Land as soon as practicable.
9-1-77. Vertical Gyro (VGI) Malfunction.
A vertical gyro malfunction will be indicated by an attitude
indicator failure, an AFCS OFF caution, and attitude
transients. If a vertical gyro failure occurs, proceed as
Failure of the No. 1 vertical gyro with altitude
hold engaged may result in an altitude
runaway. If this occurs, disengage ALT
Failure of a vertical gyro results in loss of its
associated AFCS and should be treated as a
single AFCS failure.
1. Airspeed 100 KIAS or Vne , whichever
2. Affected VGI switch EMER.
3. AFCS Select remaining system.
9-1-78. Differential Airspeed Hold Failure (DASH).
Differential airspeed hold failure will be recognized by
pitch attitude deviations. If DASH failure occurs, avoid
nose high attitudes.
9-1-79. Cockpit-Control Driver Actuator (CCDA)
1. THRUST CONT lever Slip as required.