Being one who's always looking some interesting builds, 13's or not, I found this one....
B-17F-20-BO "Fighting Swede" Serial Number 41-24520
USAAF
5th AF
43rd BG
63rd BS
Pilot: Major Robert N. Keatts, O-381156 (MIA / KIA) ID
Co-Pilot: 1st Lt William E. Ward, O-725386 (MIA / KIA) CA
Navigator: 2nd Lt John P. Murnane, O-790983 (MIA / KIA) NY
Bombardier: M/Sgt Richard G. Tennant, 15012411 (MIA / KIA) WV
Engineer: T/Sgt Charles Kachigian, 6718892 (MIA / KIA) PA
Asst Engineer: Sgt Dilman J. Beerwert, 15059026 (MIA / KIA) IN
Radio: Cpl John T. Mannion, 12021941 (MIA / KIA) NY
Asst Radio: S/Sgt Bernard E. Parker, 17030208 (MIA / KIA) KS
Tail Gunner: Sgt William S. Bates, 12031947 (MIA / KIA) NY
Photographer: Pfc Frank D. Goodwin, Jr., 14063639 (MIA / KIA) TN
MIA: May 8, 1943 at 9:13am
MACR: 13689 (15689)
Aircraft History
Built by Boeing at Seattle. Delivered to the US Army on July 24, 1942, and assigned to the 43rd Bombardment Group, 403rd Bombardment Squadron. Next, assigned to the 63rd Bombardment Squadron. Nicknamed "Flying Swede" in honor of the pilot, Lt. Folmer J. Sogaard, who was Swedish.
This B-17 flew its first combat mission on September 14, 1942. On April 20 1943 flew a mission against Wewak, piloted by Sugared skip bombing a tanker which was "burning fiercely" and "definitely sunk", then bombed the airfield. Only other shipping damage claimed on that mission was Lt William O'Brien in B-17F "Talisman" claiming two "very near misses" on another ship.
Mission History
Took off from 7-Mile Drome near Port Moresby at 0640am on a armed reconnaissance mission to Madang and Saidor on the northern coast. Its last reported position was 50 miles north of Madang, when it reported Japanese shipping, at 0900 hours, then never reported again. Subsequent searches both at the time and after the war yielded no signs of the crew and plane.
Some members of the 63rd BS heard that Radio Tokyo reported an incident on the 8th of May in which a Japanese fighter pilot had rammed a B-17. This led to speculation that this was the cause of Keats otherwise unexplained loss.
It is reported that a US Army Lieutenant was also aboard this plane. He is not listed above, nor is there any mention of his presence in the MACR. It is unclear if there was an extra crew member aboard.
Japanese Side
In fact, at 9:13am this B-17 was intentionally rammed by an attacking Ki-43 Oscar, claiming his life.
"Wewak - The Early Days" by Richard Dunn adds:
"...nine Type 1 fighters of the 11th FR under Capt. Takashi Ninomiyo, commander of the 1st chutai. These encountered the B-17 while en route to cover the ships. Three Type 1 fighters under Lt. Junji Kobayashi broke off and attacked the B-17 initiating their first pass from slightly above and then completing additional head on passes. Though damaged, the B-17 headed for some of the clouds and rain squalls in the area. Unwilling to let the B-17 escape, Sgt. Tadao Oda commenced a head on pass that ended in a collision. Both the B-17 and the fighter fell into the sea in flames. There were no survivors. The Americans had no idea what happened to the B-17 flown by Lt. Robert Keats and his crew. Oda was lionized in the Japanese press for deliberately ramming and destroying the big bomber. He was promoted to Lieutenant posthumously."
Army Bomber: Boeing B-17F Stateside Flight
B-17F 41-24520 over Port Moresby
Crew Members of B-17F "Fighting Swede" 41-24520