212man, the only Dauphin I have flown was the N3 and, although it only had a 3-axis autopilot, would fly a coupled ILS to level off at 60' down the runway - did theirs have the same capability?
The DH had a very advanced avionics kit for it’s day including a 4 axis autopilot with a Sar modes such as auto hover , trans up, trans down etc. It was actually very good when it all worked. It was however obsolescent at the time of the accident. Re: the 70/70 apch, it was not practiced and was not as straight forward as just letting an AW139 for example, continue down to ALVL on an ILS with an automatic change of coupled modes.
The pilots had nearly 600hrs and 390hrs on type and both had over 2000hrs total. The monthly training requirements for an AC SAR crew at the time more than covered IFR requirements and currency on type.