NTSB report
http://www.ntsb.gov/Recs/letters/1995/A95_35_37.pdf
"On June 18, 1994, about 0625, a Transportes Aereos Ejecutivos, S.A.
(TAESA) Learjet 25D, XA-BBA, crashed 0.8 nautical miles south of the threshold
of runway 1R at Dulles International Airport (IAD), Chantilly, Virginia, during an
instrument landing system (KS) approach in instrument meteorological conditions.
All 10 passengers and both crew members aboard were killed. The airplane was
destroyed by impact, and there was no fire."