AB139Engineer, I don't think you are correct with your calculation of the hoist penalty. The penalty is not calculated using the TIME you spend hoisting, just the NUMBER of hoists with a load on the cable. Below is the relevant paragraph from Section 4 of the AMPI (EASA):
For the parts listed in Table 5 a life penalty must be mandatorily applied whenever an external hoist lift is performed.
The external hoist lift is defined as an unreeling and recovery of the cable with a load attached to the hook, independent of the length of the cable that is deployed/recovered. An unreeling/recovery of the cable with no load on the hook is not considered to be a lift. Any operation where a load is applied for half the operation (i.e. unreeling or recovery) must be considered as one lift.
Increase the flying hour by the specified value for each external hoist lift. The penalty is applicable only to flying hours.
Table 5 External Hoist Lift - Life penalty factor
Ref Part Part number Life penalty factor
RL022 MGB Shaft, Main Rotor 3G6320A01852 2.5
MGB Shaft, Main Rotor 3G6320A01853 2.5
E.g.: MGB shaft, main rotor: Flight time = 2 FH.
Number of rescue hoist lifts = 3. Total accumulated FH=2+ (2.5 x 3) = 9.5FH.
So what they are saying is that because the example flight did 3 lifts, those 3 lifts must be multiplied by the penalty factor, and then added to the flight time. It is not the flight time that is multiplied by the penalty factor. It is still quite a hit though. The penalty is for the Main Rotor Shaft due to bending stresses from the weight of the person/object on the hoist being so far out to the side. Think of it as a slope landing, kind of
So C4 is correct with his calculations.