David H
The findings of the report (Civil Accident Report No BW/C/0203 published by the UK Board of Trade April 1969 SBN 11 510254 X) ) into this accident states :
(iv) No 2 engine fifth stage low pressure compressor wheel failed due to fatigue. Reason for failure not established
(v) Failure of the number 2 engine compressor wheel caused damage to the starboard side of the engine and to its cowling. This resulted in a fuel leak from the engine fuel supply line and a fire
(vii) First officer’s cancellation of the fire bell instead of the undercarriage warning horn prevented the fire bell from ringing
(viii) The closure of the fuel shut off valve by pulling the fire handle was inadvertently omitted by the Flight Engineer when he carried out the fire drill. The omission was not noticed by the Captain, First officer or Check captain.
(ix) The failure to close the fuel shut off valve permitted the fire to continue
I have missed out the uninteresting factual stuff like the aircarft documentation was correct.
The report eas also critical of the fire service
Hope this helps
Stephen John