On 19 April 1943 , the aircraft was attacked at 46N 9W by six Bf 110 fighters . Captain Koene Dirk Parmentier evaded the attackers by dropping to above the ocean and then climbing steeply into the clouds . The '' Ibis '' again sustained damage to the port aileron , shrapnel to the fuselage , and a punctured fuel tank . A new wingtip was flown to Lisbon to complete repairs . Despite these attacks , KLM and BOAC continued to fly the Lisbon – Whitchurch route
Captain Koene Dirk Parmentier
1948 KLM Constellation air disaster
BOAC Flight 777