Out in the Solomon Islands we had a GPS letdown.. We didn't have the full kit to do approaches, all we could do was similar to an NDB. This was necessary because of the weather and terrain we had to fly over the top of cloud covered mountains and let down the other side. The Chinese registered aircraft I had flown turned the beam bar automatically when a new track came up but the Bristow cheapies did not.
A case in point was the approach to Kwaimbaambaala. This was a 'airstrip. that was the other side of a mountain with an approach from the northwest. One had to go over the top of the mountain at around 6,000 and let down the other side and do a GPS approach.
The GPS would track you on base leg directly back at the mountain you had just crossed. You would sit there following it with your radar gradually turning red as it filled up with rocks. You would keep ranging it down fully depressed and even at 2.5 nm, it was painting at the top. The steer bar would twitch as you came on the approach track and you would input a screaming max rate turn to the left through 120 degrees and reset the beam bar so that you recovered to the centre line pointing away from the hills.
When you broke cloud you were then reminded how big and how close the hills were on the right hand side.
The things you do for money.