The Careful Enough Statement of a Problem -
....implies the solution.
"This is ridiculous. How could such an approach be allowed, especially at night, with such little terrain clearance? The threshold crossing height is 50ft; 6000ft/1nm further back, you only have another 50ft higher (100ft in total) to give 2W/2R on the PAPI, with wheels hanging probably 30ft below that?"
So I'm assuming that FAA is the authority that decides what specific approach parameters will be published as officially sanctioned (or otherwise designated as safe and effective). And that in the ordinary course of the business of regulation of civil aviation in the US, FAA will await the outcome of the NTSB investigation and report process, prior to changing the approach parameters. Or is this not correct: might FAA change the published approach parameters on an interim basis? Has this happened after other mishaps on final? (And I'm sorry if there is a term more technically appropriate than 'parameters' for the (evidently) altitude and/or glideslope limits.)
Also, is there some periodic review process by which FAA checks on whether approach corridor limits have been shown, through the experience of the aviators who flew them, to need adjustments? It is easy to have the sense that FAA has its hands full just keeping the creaky ship afloat, and things like checking for any needed updates to APP corridors is a luxury the taxpayers have neither demanded nor realized they need to pay for. How does it work?