Request for MIA Info - Anthony F. Eckhart

I would greatly appreciate any help in trying to find information about my Uncle Anthony Eckhart.
I am interested in the following:
Name of Plane
Crew Members Names
Location of Crash - Or was he shot down
Did the War Dept look for him and his crew Has anyone tried to recover (dive) to look for this missing plane Are there any pictures available
 
Anthony F. Eckhart
USAAF
MACR Number 4622 MACR Service Record 0-803954 2LT FOD Page 70
B24 Heavy Bomber S/N 42-73496
Plane went down in the Marshall Islands / Eniwetok in the Central Pacific on May 4, 1944. The crew participated ina bombardment mission to the island of Ponape in the Caroline group and did not return.
Offically listed as dead on Feb 6, 1946 by the War Department
98th Bomber Squadron, 11th Bomber Group, Heavy
Awards: Distinguised Flying Cross, Air Medal with 3 Oak Leaf Clusters, Purple Heart
He also, at some time, was a co-pilot on a bomber named Heaven Can Wait, this plane was sponsored and christened by Actor Don Ameche.

Sandie
 
If you haven't sent for your Uncle's Individual Deceased Personnel File (IDPF), it would be worthwhile.
 
Here is a sample letter sent to me by another contact.  I modified it and received my great-uncle's IDPF which gave me and my family the location of his remains, some 60 years after he had been shot down. Sometimes this file can be tough to read, as it will list details of the condition of the body, etc.  If your Uncle was declared dead, this file may have the information that led to that determination.  In my great-uncle's case, he was first listed as POW, then MIA, then KIA while a POW, then just KIA.  All that was over the course of at least a year, but the IDPF seemed to put some pieces together for us. 
 
Write to:
 
Department of the Army
U.S. Army Human Resources Command
ATTN:  AHRC-PER
200 Stovall Street
Alexandria, VA  22332-0482