Pembroke Dock

The crew left Pembroke Dock for RAF Calshot and was detached to take part to a presentation to the Royal Air Forces Association (RAFA) celebrations at Eastbourne, and was supposed to be displayed to welcome the Duke of Edinburgh. While landing on rough sea, the airplane hit waves, nosed down and plunged into the water before coming to rest few dozen yards off shore. Four crew members were killed, two other were injured and eight were unhurt. The aircraft was destroyed.

Hit a buoy while landing off Pembroke Dock. There were no casualties but the aircraft was considered as damaged beyond repair.

The floatplane was involved in a maritime patrol flight when it was shot down by a German submarine. Out of control, it crashed into the Bay of Biscay, off the Spanish coast. No trace of the aircraft nor the crew was found.
Crew (201st Squadron):
S/L William Dennys Butterworth, pilot,
F/O Colin John Griffith, pilot,
F/S John Charles Leleux, flight engineer,
F/S James William Hobson, flight engineer,
F/O Peter Anthony Cavendish Hunt, navigator,
F/O Anthony Valentine Philp, wireless operator,
F/S Duncan Jamieson McCormick Currie, wireless operator and air gunner,
Sgt Dennis Edward South, wireless operator and air gunner,
F/S Dennis Sharland, air gunner,
Sgt Frederick Foster, air gunner,
Sgt Jesse Robert French, air gunner,
F/S Edwin Watson, air gunner.

The crew was involved in a maritime patrol flight over the Bay of Biscay and left RAF Pembroke Dock at 1810LT on June 11. The floatplane should return to its base on June 12 with an ETA at 0725LT but failed to arrive. The British authorities confirmed that no trace of the aircraft nor the crew was found and that the aircraft has probably been shot down during the night by enemy fire, maybe by a German night fighter or a submarine.
Crew (228th Squadron).
Source: ASN

Crew was engaged in a maritime patrol flight and left RAF Pembroke Dock in the afternoon for a 13 hours mission. Aircraft was scheduled to overfly the Lake Lough Erne but for unknown reason, was off the initial track and was flying over a mountainous area in the Donegal County. By night, the four engine aircraft hit the slope of Mt Blue Stak at a height of 2,219 feet. Rescuers arrived on site, some 200 feet from the top, and were able to evacuate six injured crew members while all seven other occupants were killed.
Crew:
Lieutenant Howard Charles Sheffield Armstrong, pilot, †
Lieutenant Maurice Leonard Gillingham, pilot, †
Maurice Vincent Wareing, copilot, †
Joseph George Trull, navigator,
John Bruce Richardson, flight engineer,
Sergeant C. S. Hobbs, air gunner,
Sergeant Cyril Robinson Greenwood, †
Sergeant Frederick George Green, gunner, †
Sergeant John Ernest Parsons, †
Sergeant Frederick Tom Copp, flight engineer, †
Sergeant James Kenneth Gilchrist, rear gunner,
Sergeant A. Gowens.

Short Sunderland flying boat T228 took off from RAF Station Pembroke Dock at 0715LT on 24 December 1943 to carry out an anti-submarine patrol. At 1225LT a distress signal was received from the aircraft. At this time T228 was over a force of enemy destroyers and in company of another Sunderland. At 1310LT a message was received from the other Sunderland aircraft which stated that wreckage of a Sunderland aircraft had been sighted and one survivor seen on the wing float of the aircraft. A dinghy was dropped but the survivor disappeared a few minutes later. Although the crew of the accompanying aircraft did not actually see T228 shot down, it was believed that T228 was shot down by an enemy surface vessel.
Source:
http://www.aviation-safety.net/database/record.php?id=19431224-0

The seaplane left RAF Pembroke Dock at 2345LT on December 18 on a routine flight to Gibraltar with 19 crew members on board (two complete crews and reinforcements to the squadron as passengers). While cruising by night some 30 miles off the Saint-Vincent Cape located on the southwest coast of Portugal, the crew was able to send a distress IFF signal that was received by the crew of a second Short Sunderland which was following DW106. Despite intense SAR operations, no trace of the aircraft nor the crew was found.
Crew (270th Squadron):
F/O Vernon Maurice Sparkes,
F/Sgt Charles Albert Mark Barber,
F/Lt John Eric Wood,
F/Sgt Frederic Raymond Brown,
F/O Edward James Jay,
F/Sgt Francis Mcphee,
F/O Reginald Robert Terance Crump,
F/Sgt Eric Piggott Botting,
P/O Neil Procter Chapman,
F/O Norman Edmond Hanna,
Sgt Stanley Kidd,
F/O Raymond John Elderfield,
Sgt William Henry Cryer,
Sgt William Peter Houston,
Sgt Henry Leonard Thompson,
Sgt Maurice Robert Hunt,
Sgt Edmund Albert Hooker,
Sgt Samuel Hughes,
F/Sgt Leslie Robinson.
Source:
http://www.landinportugal.org/air_pages/a01_copy(133).htm

While approaching the Spanish coast, the aircraft was shot down by the pilot of a German fighter and crashed into the Bay of Biscay, killing all 12 occupants.

The seaplane was engaged in an attack against German U-boat when it was shot down by enemy fire and crashed into the Bay of Biscay off the French coast. All 11 crew members were killed.
Crew:
F/Lt Desmond Fairfax Hill,
F/Lt Leonard Bertrand Lee,
F/O George Lough,
F/O Alfred Keith MacDougall,
F/O Robert Jasper Agur,
W/O Vincent Murray Goldstone,
F/Sgt Robert Alexander Shaw,
Sgt Andrew Carmichael,
Sgt Dewi Madoc Davies,
Sgt James Watt Fraser,
Sgt Richard Evelyn Joseph Smith.

The aircraft was engaged in a maritime patrol flight over the Biscay Bay on a SAR mission following the recent crash of a BOAC DC-3. En route, the seaplane was attacked by eight German Junkers JU.88. Despite the situation and damages, the pilot was able to leave the combat zone and flew back to the UK. While approaching the coast of Cornwall, the captain decided to ditch the airplane few hundred yards off Praa Sands. A flight engineer was killed while all 10 other occupants escaped unhurt. The aircraft was later wrecked by tides and waves.
Crew (461th Squadron):
F/Lt Colin Braidwood Walker, pilot,
P/O Wilbur James Dowling, copilot,
P/O James Collier Amiss, copilot,
Sgt Edward Charles Ernest Miles, flight engineer, †
Sgt Phillip Kelvin Turner, flight engineer,
Sgt Louis Stanley Watson, mechanic,
P/O Kenneth Macdonald Simpson, navigator,
F/Sgt Alfred Eric Fuller, air gunner,
F/Sgt Sydney Frederick Miller, air gunner,
Sgt Albert Lane, air gunner,
F/Sgt Ray Marston Goode, air gunner.