AC,
The FSI Instructor told you straight....the policy is to only teach FSI approved curriculum.
I know that from first hand involvement in such discussions where improvements were endorsed but not yet approved by the Standards Department.
That process at times could be like moving mountains but did ensure standardization on what was being taught by each Instructor.
Current 407 Pilots might compare this text to current RFM language for accuracy......
COMPLETE LOSS OF TAIL ROTOR THRUST
1. Uncontrollable Yawing to Right ( Left Side Slip)
2. Nose down tucking
3. Possible roll of fuselage
Hovering - Close Throttle and perform a hovering Auto landing. A slight rotation can be expected on touchdown.
In-Flight - Reduce Throttle to idle, immediately enter autorotation, and maintain a minimum AIRSPEED of 55 KIAS during descent.
FIXED TAIL ROTOR PITCH FAILURE - HOVER
Do not close throttle unless a severe right yaw occurs. If pedals lock in any position at a hover, landing from a hover can be accomplished with greater safety under power-controlled flight rather than by closing throttle and entering autorotation.
FIXED TAIL ROTOR PITCH FAILURE - IN-FLIGHT, LEFT PEDAL APPLIED
In a high power condition, helicopter yaw to left when power reduced. Power and AIRSPEED should be adjusted to a value where a comfortable yaw angle can be maintained. If AIRSPEED is increased, vertical fin will become more effective and and an increased left yaw attitude will develop. To accomplish landing, establish a power-on approach with sufficiently low AIRSPEED (zero if necessary) to attain a rate of descent with a comfortable sideslip angle. (A decrease in NP decreases tail rotor thrust .) As collective is increased just before touchdown left yaw will be reduced.
FIXED TAIL ROTOR PITCH FAILURE - IN-FLIGHT, RIGHT PEDAL APPLIED
In cruise flight or reduced power situation, helicopter will yaw to right when power is increased. A low power run-on type landing will be necessary by gradually reducing throttle to maintain heading while while adding collective to cushion landing. If right yaw becomes excessive, close throttle completely.