Here is what I have:
From the book“Poles in defence of Great Britain: July 1940-June 1941”, by Robert Gretzyngier and Wojtek Matusiak.
ISBN 1902304543 :
"The most effective Polish fighter pilot from the previous day, Sgt Antoni Siudak, had little time to celebrate his victory. On 6th, about 1.15 pm, he was killed during a bombing attack on RAF Northolt. A single bomber sneaked over the airfield and dropped bombs near a Hurricane of 303 Squadron – P3120/RF-A (58). The explosion killed three airmen, including one pilot – Siudak – and two others were wounded. Two more aircraft suffered damage, including Hurricane P3217/RF-S. "
From the Form 540 of 303 Sqn RAF, available online:
1940-10-06
NORTHOLT
10.30. Enemy attack made on the aerodrome by one aircraft, Sgt, Suidak was killed by a bomb which fall between the hangars. Aircraft totally destroyed.
F/Sgt. Kania rejoined the Squadron from No. 6 OUT.
Please note the time difference between both sources.
The site
http://www.aircrewremembered.com/siudak-antoni.html says that Siudak was killed and the Hurricane destroyed while taxying, so implying that he was aboard.
The webspage
http://www.rafcommands.com/forum/sho...rmen-6-10-1940 lists no other RAF member lost at Northolt this day outside of Siudak and Stennett
A CWGC search for the Uxbridge Urban district (to which Northolt was attached) shows 12 casualties for 6 October 1940, but none on the airfield or in Northolt:
_ 1 at High Road, Hillingdon
_ 10 in Montague Road, Uxbridge (No 36, 38, 40, 42)
_ one 17-years old girl was injured at Yeading Gardens, HAyes, and died on 10 October at Hillingdon County Hospital.
The closest civilian casualty in Northolt is Joseph Henry Pickering who was injured on 7 October 1940 at Yeading Lane, Northolt; died same day at Hillingdon County Hospital.