Den 12. april 1940 styrtede HAM P1173 i havet. FAF skriver:
"Den 12. april 1940 angreb RAF fly tyske krigsskibe i Kristiansand havn, hvorunder formationen af bombefly blev angrebet af tyske jagere.
Et Hampden fly blev ramt, og det blev set styrte brændende i havet ca. 100 miles fra den norske kyst. Hele besætningen omkom."

Flying Officer Kenneth John Alan Johnstone, 24 år, var fra Royal Air Force.
Hans navn er på Panel 6 på the Runnymede Memorial blandt mere end 20.000 navne på flyvere, der ikke har en kendt grav. (Kilde: CWGC)

Han var Navigator på HAM P1173. (Kilde: p003MACR)

1 flyver fra HAM P1173 blev begravet i Frederikshavn. 3 flyvere har ingen kendt grav. 4 flyvere.

On 12 April 1940 HAM P1173 crashed into the sea. FAF writes:

"On 12 April 1940 the RAF attacked German naval ships in Kristiansand Harbour. The formation of bombers was attacked by German fighters.
A Hampden was hit and it was seen, burning, crashing into the sea about 100 miles off the coast of Norway. All of the crew perished."

Flying Officer Kenneth John Alan Johnstone, 24, was from the Royal Air Force.
He is commemorated on the Runnymede Memorial, Panel 6, 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 56.

He was the Navigator of HAM P1173. (Source: p003MACR)

1 airman from HAM P1173 was buried in Frederikshavn. 3 airmen have no known grave.

See Hampden and No. 44 Squadron RAF in Wikipedia and No. 44 Squadron (RAF): Second World War
RAF-Lincolnshire.info: 44 Squadron. This  took off from . See RAF Waddington now. See also p003MACR.
Hampden I P1173 KM-  took off from RAF Waddington at 08:20 on 12 APR 1940. (Source: Aircrew Remembered has this.)  4 airmen.