It struck the aircraft, causing the a/c to crash into the harbour with fatalities
No - incorrect. It was a straight CFIT at night in marginal VMC (single pilot.) Aircraft hit a ridge line and was destroyed - no harbours involved!
http://www.cad.gov.hk/reports/Accide...6_of_B-HRX.pdf
The BGS (German border Guard) aircraft lost both cabin doors during an air test. It resulted in a temporary Vne restriction of 140 kts.