Marcr, I cannot ever remember flying an IAP in 3 axis mode in the L2 except during training for degraded AFCS approaches. Prior to the EC225 it was the bestAP out there., L2 AP had no real disabilities when operated within its published AFM limitations. Certainly the IAS hold was competent as were all other modes.
Not wanting to go over old ground but the I remember that the general consensus at the time was had the helicopter been operated in 4 axis this accident would most likely not have happened. It was unusual approach. LOC ONLY. 09 to LSI. Maybe the mindset of the lack of G/S continued into the AFCS approach plan.
After this accident further tightening of industry policies for use of upper modes was widespread as it had started to be after the EC225 went into the sea on a night approach several years earlier. Hopefully, in this respect, crews are better informed and controlled by mandatory policies. Cue the old nutmeg “What about manual flying skills” well, we have to train hard to fight easy. All skills must be kept fresh......but just don’t do the degraded ones in IMC unless you have a real degrade.
Culture and common sense have to coincide.