Analysis of information sources in references of the Wikipedia article "Upper Winchendon" in English language version.
Emergency services were called to the site, near Waddesdon Manor, near Aylesbury, at 12:06 GMT
Four people have died … Two people were killed in each aircraft, Thames Valley Police said… [they] cannot see the crash site as the woodland is so dense.
Both aircraft involved in today's mid-air collision near Waddesdon are understood to have come from Wycombe Air Park, according to the Press Association.
Op basis van een foto van een wrakstuk op de site van de BBC lijkt het verongelukte vliegtuig een Cessna 152 met de registratie G-WACG te zijn.
the helicopter was carrying two people, while only the pilot was on board the light aircraft, reported to be a two-seat Cessna 152... which had suffered substantial damage to its landing gear, propeller and engine cowling during a previous crash as it was taking off at Bodmin airfield, in Cornwall, in July 1993.
A spokesman for the nearby Wycombe Air Park confirmed both aircraft had come from there. A representative of Waddesdon Manor, a large estate near Aylesbury, said the crash happened near the village of Upper Winchendon, a little beyond the manor's grounds.
