"Natten til den 10. april 1944 foretog RAF en stor mineudlægningsoperation ved Danzig (Gdansk). I forbindelse med overflyvningen af dansk område blev
mindst 7 britiske bombefly skudt ned, mens flere nedstyrtede i Nordsøen, i større eller mindre afstand fra Vestkysten. Fra 6 fly nedstyrtet i Midtjylland, og 2 i
Nordsøen, ligger 35 omkomne flyvere begravet i Esbjerg. Samtlige flyvere begravedes den 15. april 1944." (FAF)

LAN JB709 styrtede i Nordsøen. Ingen overlevende. H. M. Keates, en af flyets skytter, blev fundet drevet ind ved Blåvand (omkring her) den 13. april 1944.
De 6 andre flyvere fra denne besætning har ingen kendt grav. p291MACR

Flying Officer William Quanstrom, 27 år, var søn af Julius og Emma Elizabeth Quanstrom, Quesnel, British Columbia, Canada.
Hans navn er på Panel 248 på the Runnymede Memorial blandt mere end 20.000 navne på flyvere, der ikke har en kendt grav. (Kilde: CWGC)

Se Lancaster Fotos. 7 flyvere.

"On the night before April 10 1944, the RAF carried out a big minelaying operation at Danzig (Gdansk). At least 7 British bombers were shot down as they
flew over Danish territory, and several crashed into the North Sea, off the west coast of Jutland. From 6 planes crashed in the central part of Jutland, and 2 in the
North Sea, 35 airmen were buried in Esbjerg. All of the airmen were buried on April 15 1944." (FAF)

LAN JB709 crashed into the North Sea. No survivors. Air Gunner H. M. Keates was found drifted ashore near Blaavand (about here) on 13 April 1944.
The 6 other airmen of this crew have no known grave. p291MACR

Flying Officer William Quanstrom, 27, was the son of Julius and Emma Elizabeth Quanstrom, of Quesnel, British Columbia, Canada.
He is commemorated on the Runnymede Memorial, Panel 248, among more than 20,000 airmen who have no known grave. (Source: CWGC)
The Canadian Virtual War Memorial has this. He is remembered on The Walls of Names at the International Bomber Command Centre, Phase 1, Panel  87.

See No. 12 Squadron RAF - Wikipedia * 12 (B) Squadron Association * and  12 Squadron RAF  at RAF-Lincolnshire.info. See also  Lancaster Photos.
Lancaster III JB709 PH-O took off from RAF Wickenby  at 2123 hrs on 09 APR 1944. (Source: Aircrew Remembered has this.)   7 airmen.