PPRuNe Forums - View Single Post - Police helicopter crashes onto Glasgow pub: final AAIB report
Old 1st Nov 2015, 17:20
  #256 (permalink)  
RVDT
 
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Lets make an adjustment as it needs to be read in conjunction with the rest of the info -

"An algorithm is built into the CPDS software to prevent intermittent fuel transfer pump captions appearing during dynamic manoeuvres in flight, as the fuel moves about in the main tank. This inhibits the caption until there has been a continuous period of three minutes during which the pump has run dry. If, within the three-minute period, the pump becomes re-immersed in fuel, the three-minute delay is reset to zero to await the next dry running condition. The f pump aft and f pump fwd caution captions will also illuminate after three minutes if the fuel transfer pumps are switched off while immersed in fuel or become blocked. A message is not provided for the situation where a pump has been switched off, after running dry, and is then re-submerged in fuel.
The last part of the statement was just to clarify your assumption.
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