The AV report on the three men killed is AV635/44. Unfortunately only gives the date and location of the crash, not the time.
Jump to page 61 on this link:
https://catalog.archives.gov/id/18238591
I suppose one possibility, since the KU 906 page shown is a translation of the original German KU report, is that there is a typo on the time and it should be 1430 not 1530.
While it might have been possible to look at the original German AV635/44 folder which should be on page 68 of this next link, it appears Maj Sekowski on 4 Nov 1947 checked it out and never returned it. ;-(
https://catalog.archives.gov/id/17352808