Avro Anson Mk.I AX583 of No.2 (Observer) Advanced Flying Unit crashed on Drum near Conwy on the 25th April 1944


Reginald William Thomas Smith Sergeant Pilot Killed
John Marshall Polomark Pilot Officer, RCAF Navigator Killed
George Williams Pilot Officer Passenger Killed
Norman Valentine Neville Robson Sergeant Wireless Operator Killed
Wilfred Jackson Sergeant Wireless Operator / Air Gunner Killed


The crew of the aircraft were on a night navigation and bombing exercise from RAF Millom in Cumbria. The planned route, to be flown at 2,500ft, was Millom – Beaumaris – Meni Bridge – Strumble Head – Santon Head – Douglas – Millom, it was while on the first leg of the flight that a navigation error was made which lead to the aircraft being 8 miles off track by the time it reached the North Wales coast. The crews who were flying that route were warned about high ground close to where they were to be flying and to use the radio beacon at Llandwrog to assist in locating their turning points along the North Wales coast as well as listening for the warning beacons which had by then been placed on some of the mountain tops.

At around the time the aircraft should have passed over its first turning point at Beaumaris it flew into the north-eastern side of Drum in the Carneddau killing all onboard.

When it failed to return to Millom the aircraft was reported as overdue and the RAF Mountain Rescue Team at RAF Llandwrog near Caernarfon were notified that it was possible the missing aircraft had crashed in North Wales. They were given the course the aircraft was believed to be flying on its first leg, on the basis of that they set out at 08:10 from Llandwrog to search Foel Fras and Foel Grach. While on the hill they received a radio message via the Police to say that an Army unit had discovered the wreckage of the aircraft further north on Drum.

Crash site of Avro Anson Mk.I AX583 on Drum, Conwy
The crash site is marked by a scar which contains small fragments of the aircraft. The view is towards to North East along the line from which the aircraft approached.
Crash site of Avro Anson Mk.I AX583 on Drum, Conwy
The largest items which remain at the site today are pieces of the undercarriage, this is one of those parts.
Crash site of Avro Anson Mk.I AX583 on Drum, Conwy
This is the largest of the undercarriage parts which still remain at the site.
Grave of Pilot Officer John Marshall Polomark RCAF at Chester (Blacon) Cemetery
Following the crash the victims were buried at various places in the UK.
The navigator, being a Canadian, was buried at Blacon Cemetery in Chester, his headstone is shown above.