TM 55 6930-212-10 Table 7-2.  Simulated Malfunction Details - Continued Method of Indications and effects on Effects sensed by trainee introduction related systems as presented if corrective action is Malfunction by instructor to the instructor and trainee not taken No.  2 AFCS 656 NO.  2 AFCS OFF caution light NO.  2 AFCS OFF caution illuminates.  If AFCS select light illuminates.  If switch is in BOTH or NO.  1 AFCS select switch is in position, no noticeable BOTH or NO.  1 position, change in stability occurs. no noticeable change in stability occurs. Hardover in No.  1 657 Abrupt pitch attitude change. Abrupt pitch attitude AFCS pitch change. Hardover in No.  1 658 (Roll) Abrupt attitude change in Abrupt attitude change in AFCS roll and yaw 659 (Yaw) appropriate axis. appropriate axis. Hardover in No.  2 660 Abrupt pitch attitude change. Abrupt pitch attitude AFCS pitch change. Hardover in No.  2 661 (Roll) Abrupt attitude change in Abrupt attitude change in AFCS roll and yaw 662 (Yaw) appropriate axis. appropriate axis. Pitch oscillations 663 Unusual oscillations, random in Oscillations continue in No.  2 AFCS occurrence, in pitch axis. causing unstable flight. Roll oscillations 664 Unusual oscillations, random Oscillations continue in No.  2 AFCS in occurrence, in roll axis. causing unstable flight. Yaw oscillations 665 Unusual oscillations, random Oscillations continue in No.  2 AFCS in occurrence, in yaw axis. causing unstable flight. AFCS engagement 666 Pitch pulse is realized upon Momentary disturbance error engaging AFCS system from occurs each time AFCS BOTH to single AFCS ON. is switched from one mode to another. 7-19