Den 21. april 1943 kl. 02.10 styrtede LAN ED557 ned i Storebælt på hjemturen fra Stettin (Szczecin).  Flyvehistorisk Tidsskrift skriver:

20.-21. april 1943 (02.10) Storebælt. Lancaster B.III ED557 (11W-Y). 100 BS, 1 BG, Waltham (Grimsby), Lincs. (Stettin) 6 MIA og 1 MA (Bispebjerg).
"Flyet havde over radioen meddelt, at det var ramt af flak over målområdet. Under returflyvning blev flere fly rapporteret nedskudt over Storebælt,
og ED557 var et af disse fly.
Liget af bombekasteren, Sgt. Clifford Walker, blev fundet i Samsø Bælt den 28. april. Resten af besætningen er aldrig fundet." (FT 88-32-8)

Flight Lieutenant William Arthur Jones, 24 år, var søn af Arthur Edwin og Mary Jones, Cardiff; gift med Margaret Wynne Jones, Cardiff, United Kingdom.
Hans navn er på Panel 119 på the Runnymede Memorial blandt mere end 20.000 navne på flyvere, der ikke har en kendt grav. (Kilde: CWGC)

7 flyvere. Se Lancaster fotos og Stettin + Rostock 20 - 21 April 1943.

At 02:10 on 21 April 1943 LAN ED557 crashed into the Storebælt maybe about here on the return trip from Stettin (Szczecin). (Danish) Aviation Historical Review:

"20 -21 April 1943 (02.10) Storebælt. Lancaster B.III ED557 (11W-Y). 100 BS, 1 BG, Waltham (Grimsby), Lincs. (Stettin) 6 MIA and 1 MA (Bispebjerg).
Over the radio the plane had reported that it had been hit by flak in the target area. Several planes were reported shot down over the Storebælt on the return flight.
ED557 was one of these planes.

The body of Sergeant (Bomb Aimer) Clifford Walker was found in the Samsø Bælt on 28 April. The rest of the crew have never been found. " (FT 88-32-8)

Flight Lieutenant William Arthur Jones, 24, was the son of Arthur Edwin and Mary Jones, of Cardiff, and the husband of Margaret Wynne Jones, of Cardiff, UK.
He is commemorated on the Runnymede Memorial, Panel 119, among more than 20,000 airmen who have no known grave. (Source: CWGC)
He is remembered on The Walls of Names at the International Bomber Command Centre, Phase 1, Panel 57.

See Lancaster * Lancaster Photos * No.100 Squadron RAF * 100 Squadron Association * RAF-Lincolnshire with RAF Grimsby * Stettin + Rostock 20 - 21 April 1943.
Lancaster III ED557 HW-Y took off from RAF Grimsby at 21:57 on 20 APR 1943. (Source: Aircrew Remembered has this) 7 airmen.