Hello Jens,
See Joseph F. Baugher's website:
"USAAS-USAAC-USAAF-USAF Aircraft Serial Numbers--1908 to Present"
http://home.att.net/~jbaugher/usafserials.html
Go to his page:
"1943 Serial Numbers 43-5109 to 43-52437"
http://home.att.net/~jbaugher/1943_2.html
Scroll down to see this:
43-38274 through 43-38473: Boeing B-17G-85-BO Fortress
38283 (95th BG, 334th BS) lost Mar 17, 1945. MACR 13111
There is a photo of 43-38283 and some more information here:
http://www.95thbg-horham.com/page46.html
There are short summaries of the 95th Bomb Group on these sites:
http://usaaf.com/8thaf/bomber/95bg.HTM
http://libraryautomation.com/nymas/usaaf4.html
There is a summary of USAAF operations on 17 March 1945 here:
http://www.usaaf.net/chron/45/mar45.htm
Paul Webber