Originally Posted by
Chiefttp
Just throwing this out there. The ILS to Rwy 4 at LGA has a note on the approach plate prohibiting auto-pilot coupled approaches. Hence the pilot was hand flying, which could explain why they got so far off the localizer course. Challenging weather for a hand flown approach. Hopefully the most experienced pilot was the one flying it.
The video discussion posted by bean above details the reason that the LGA ILS 4 approach is not to be a coupled approach. There was a small hotel built off of the approach end of runway 4 which interferes with the GS signal. This was discovered back about 10 years ago by the FAA technical division after test flights.
So here's my question... if the GS signal is degraded to the point that modern autopilot can get spurious information, then why is the information provided by the GS valid for a hand flown approach?
I think it's time of the NY Port Authority, the FAA and the airlines to buy the Avion Hotel and tear it down!