Hi i fly the B 737 NG, The consequences of the failure of the RA is studied in many different chapters in FCOM and it's difficult to find out all the degraded systems when the failure occurs, and since a long time i'm wondering why Boeing has never inserted a procedure how to intercept glide slope from above since it's quite special procedure
, neither a check list that deals with the failure of a radio altimeter, in A320 FCOM, these 2 procedures exist and they are very helpfull.