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Lockheed Hudson FK791 Exhibition

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This section of the archive is dedicated exclusively to the investigation and documentation of the aviation accident that occurred in Ermida on March 6, 1944. The tragic incident resulted in the loss of three crew members aboard the Lockheed Hudson FK791. The aircraft was on a routine flight between Portreath, United Kingdom, and Lajes Air Base in the Azores, with a planned stopover in Gibraltar.

This is probably the least documented aviation accident to have occurred in Portugal during the Second World War. As expected, given Portugal’s supposed status of neutrality in the conflict, national newspapers made no mention of such incidents. The situation was no better in the regional press: the only local newspaper at the time, A Razão, had ceased publication in 1935. The closest active newspaper to the Mira region was Diário de Coimbra, which to this day has found no reference to the accident in its historical archives.

During the investigation, one of the first, if not the very first pieces of information discovered, was that the accident occurred on March 6, 1944. An aircraft of the Royal Air Force, a Lockheed Hudson IIIA with the registration FK791, belonging to No. 269 Squadron of Coastal Command, crashed in Ermida. At the start of the war, the mission of this command was to patrol coastal areas, and it was later deployed to Iceland with the objective of detecting and sinking German submarines. By March 1944, the squadron was based in the Azores, carrying out weather reconnaissance and maritime search and rescue operations, until it was deactivated on March 10, 1946.

The aircraft that crashed in Ermida was en route from Portreath, in the southwest of England, to Lajes Air Base in the Azores, with a scheduled stopover in Gibraltar. While flying over the Bay of Biscay, the plane was caught in a thunderstorm that damaged the left engine. As a result, the British pilot, David Duncan McPetrie, ordered the crew, George Gordon McLean, an Australian navigator; Philip Arthur Gallop, a Canadian radio operator and gunner; and Walter Edward Potwarka, also a Canadian radio operator and gunner to put on their parachutes.

As the aircraft approached the Mira region, it suffered total engine failure, prompting the crew to deploy an inflatable dinghy, part of the emergency equipment intended for the rescue of castaways, into the Mira Lagoon. At that moment, the Canadian crew member Walter Edward Potwarka parachuted from the aircraft, becoming the sole survivor of the crash. According to reports, he was rescued by a fisherman who was in the lagoon at the time. It is believed that the pilot attempted to turn the aircraft back north, but after the second engine failed, he lost control. The aircraft ultimately crashed south of Ermida at around five o’clock in the morning.

According to testimonies from Mira residents who went to the site at the time, Maria de Lourdes Costa (Cential, 1926), Fernando Cruz (Mira, 1931), and Alier Domingues Gonçalves (Ermida, 1937), as well as Artur Fresco (Lagoa, 1936), the aircraft flew over the municipality of Mira already on fire and was seen from several localities. During its final flight, it dropped maritime rescue equipment over the Mira Lagoon before crashing into the forest in the Pinhal do Canto do Mato, located in Ermida. It was also over the Mira Lagoon that the sole survivor, Edward Potwarka, parachuted from the aircraft, becoming entangled in a tree. Several reports indicate that he was heard by fishermen who were at the lagoon at that moment. Afterwards, Potwarka was taken to the village of Cential, to the house of the senior postman Manuel Miranda Rolo, where he was offered coffee and corn bread. To assist in communication, the writer and World War I veteran Maia Alcoforado (Panoias 1899 - Mira 1974), fluent in English, was called. Potwarka was then escorted to the local forestry station, where he was handed over to the Portuguese authorities. The artifacts presented here were preserved by Forest Ranger Mendes, resident at the Casa Florestal da Lagoa, the place where the remains of the crashed aircraft were taken. The subsequent fate of the aircraft remains unknown. At the time, it was common practice for unrecoverable military equipment to be donated to local charitable institutions (Misericórdias), which sold them as scrap to raise funds. Part of this collection was later donated to João António Miranda Petronilho, who kept it until he gave it to the municipality. The last item in this collection, registered under inventory number 193, was donated by Eduardo Maduro, a local resident of Mira who collected the piece on the very day of the accident.

Imagem 1

Badge of Squadron 269

Imagem 2

David Duncan McPetrie

Pilot

Imagem 3

Gerorge Gordon McLean

Navigator and gunner

Imagem 4

Philip Arthur Gallop

Navigator and gunner

Imagem 5

Walter Edward Potwarka

Navigator and gunner

Lockheed Hudson blueprint

Imagem 8

Flight plan

The original plan is shown in green.

In red, the route taken.

Imagem 9

Operations logbook

Imagem 10

Crew list of FK791

Imagem 11

Flight records of David Duncan McPetrie

Imagem 11

P. A. Gallop death news

Imagem 12

Diploma for Public Service

Manuel Rolo

Imagem 13

Confidential Circular No. 4/44

Customs Guard Post of Palheiros da Costa

to the Harbour Master of Figueira da Foz

reporting the possession of a parachute

belonging to the aircraft.

Imagem 14

Confidential Circular No. 3

Customs Guard Post of Palheiros da Costa

to the Harbour Master of Figueira da Foz

reporting the possession of a parachute

belonging to the aircraft.

Imagem 15

Burial Register

St James Cemetery

Oporto

Imagem 16

Locheed Hudson

Launching of a lifeboat

warhistory.org

Imagem 17

Reconstruction of the accident

over the Mira Lagoon

Image generated by AI

Round metal plate

N.I. 172

C55628, Bendix radio, SER. NO. 2327,

28 VOLTS | Diameter de 40mm

Thickness 10mm | Weight 15,88g

Imagem 173

Brass metal sheet,

N.I. 173

Measurements 50 x 31 x 0,1mm

Weight 7,25g

Imagem 174

Aluminium metal plate I

N.I. 174

AAM With a crown between the two letters.; TYPE RA-1B; REF.NO. 110D/303

TYPE 3611B; REF.NO. 11OU-36

Measurements 38 x 19 x 0,1mm

Weight 0,86g

Imagem 175

Aluminium metal plate II

N.I. 175

AM With a crown between the two letters.

TYPE RA-1B; REF.NO. 110D/303

Measurements 38 x 19 x 0,1mm

Weight 0,86g

Imagem 176

Round metal plate, with the inscription,

N.I. 176

Bendix

Diameter de 20mm | Thickness 2mm

Weight 5,90g

Imagem 177

Chapa metálica

N.I. 177

Cambridge instrument Co Inc.

INSTR: NO: 069119 | PART. NO. 8500-10

TYPE D-1 | D.C. VOLTS 24

ENG MFR wrigth

ENGTYPE GR-1820-G205AOCTAE RATING 90

INDICATOR UNIT | MADE IN USA

Measurements 52 x 31 x 2mm

Peso 3,40g

Imagem 178

Brass metal piece

N.I. 178

Length 82mm | Largura 8mm

Weight 2,56g | Thickness 0,1mm

Imagem 179

Brass metal part, illegible

N.I. 179

Length 32mm | Largura 8mm

Weight 1,1g | Espessura 0,1mm

Imagem 180

Victoria pocket watch

N.I. 180

Diameter 45mm | Weight 54,39g

Thickness 13mm

Imagem 181

Armed forces identification tag

N.I. 181

Length 38mm | Width 31mm

Weight 6,5g | Thickness 1mm

Imagem 183

Armed forces identification tag

N.I. 183

SGT Philip A. Galop | R99533

Length 38mm | Width 22mm

Weight 4,86g | Thickness 0,1mm

Imagem 184

Metal part

N.I. 184

Length 46mm | Width 23mm

Weight 4,97g | Thickness 0,1mm

Switch Unit | Type 35

1910 FB/155 | A M | Serial N 63430

Imagem 185

Bullet

N.I. 185

Length 30mm | Diameter 10.5mm

Weight 8,28g | RL

42*** | 082

Imagem 186

Button

N.I. 186

Royal Air Force button | Crown at the top

Brass | Eagle at the bottom | Y6-224

Diameter 25mm | Weight 2,87g | RL

Thickness 6mm

Imagem 187

Button

N.I. 187

Royal Air Force button | Crown at the top

Brass | Eagle at the bottom | JR

COUNT & SON, LONDON | Diameter 23mm

Weight 5,37g | RL | Thickness 4mm

Button

N.I. 188

Royal Air Force button | Crown at the top

Brass | CHENEY B'HAM

COUNT & SON, LONDON | Diameter 23mm

Weight 6,37g | Thickness 4mm

Button

N.I. 189

Royal Air Force button | Crown at the top

Brass | Eagle at the bottom

Diameter 23mm

Weigh 6,37g | Thickness 4mm

Button

N.I. 190

Royal Canadian Air Force button | Crown at the top

Eagle at the bottom. CARR | Brass

Weigh 8,37g | Diameter 23mm

Thickness 4mm

Button

N.I. 191

Royal Canadian Air Force button | Crown at the top

Eagle at the bottom. CARR | Brass

Weigh 1,89g | Diameter 23mm

Thickness 4mm

Metal part | Brass

N.I. 192

AICRAM RADIO RECIEVER | TYPE RA1B SER NO.4513 FREQUENCY RANGE

CYCLES 150-1.5 AND 1.00 - 150 MEGACYCLES | BANDS - MEGACYCLES

I - 150-315 IV 130 - 3.7 | II **680 V 8.7 - 15.0

III 650 - *** VI - 7.5 - 15.0

BENDIX RADIO CORPORATION | USA | PATENT NOTICE INSIDE

Dimensions 78 X 52 X 4mm

Weigh 1,89g | Thickness 4mm

Metal part | Stainless steel

N.I. 193

Acknowledgements

To João António Petronilho, for preserving these objects with such special care over so many years.

To Mrs Maria de Lourdes, in gratitude for the public testimony she provided.

Ao senhor Fernando Cruz, pelo depoimento público prestado.

To Mr Alier, for his testimony and his willingness to accompany us to the site of the accident.

To Mr Eduardo Maduro, for the gift of the item that once belonged to the crashed aircraft.

To Mr Artur Fresco, for his remarks on the occasion of the unveiling of the monument dedicated to the crew.

To Mrs Mafalda Caetano, in appreciation of her assistance, the documents she provided, and the recording of her grandmother’s testimony.

To Pedro Laranjeiro and Carlos Saramago, for their support in the endeavour to identify the location where the accident took place.

João F. Alcaide, archaeologist.

Master Forester José Mendes d'Oliveira

José Mendes d'Oliveira

Master Forester José Mendes d'Oliveira

Medalha atribuída

Medal awarded for services rendered.

First class postman, Manuel Miranda Rolo

Manuel Miranda Rolo

Senior postman, Manuel Miranda Rolo

Diploma

Public Service Diploma

Accident witnesses who made their way to the scene

Maria de Lourdes

Maria de Lurdes, daughter of Manuel de Miranda Rolo.

Fernando Cruz

Fernando Cruz

"Never in the field of human conflict was so much owed by so many to so few."

Winston Churchill, Winston Churchill, 20 August 1940.