From the CVR transcript, the 1000ft call was done at 4:47:02,9, comparing with the FDR that would be about 1500ft or just above 1000ft on radio altimeter. Also, they call visual at 4:47:27.9 about 150ft radio altitude or just above 900ft. They went below MDA not having the runway in sight, the "hundred above" and "minimum" calls would have saved the day as usual.
Interesting enough there is some talk about the MDA when they are approaching and passing 1200ft:
"Alright ah DA is twelve ah hundred"
"Twelve hundred yeah..."
"two miles"
"it wouldn't happen to be actual [chuckle] (they were passing 1100ft at this point)
Do you guys believe they would have intentionally descended below MDA not being visual?