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Old 17th Apr 2009, 12:20
  #4240 (permalink)  
tucumseh
 
Join Date: Feb 2003
Location: uk
Posts: 3,225
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Radar Altimeter

I bow to aircrew expertise so don't comment on the Rad Alt settings, but did anyone get to the bottom of the design defect in the Rad Alt noted by the AAIB?

MoD can't say if it was ever investigated or corrected (presumably they no longer speak to the Design Authority or AAIB, which would explain much!!). So, we still have a contradiction whereby;

(a) On the basis of unvalidated testing of the TANS unit, in isolation, in unrepresentative conditions, MoD stated the entire Nav System was both serviceable and accurate (two different things), and,

(b) They acknowledge a design defect in the Rad Alt, part of the aforementioned Nav System which fed TANS.


I'm not suggesting Nav System error as the cause (although I know it was suspected early on); rather I'm noting, again, one of many examples whereby MoD did not meet their legal obligations, and their flat refusal to discuss the issue. When information such as this is hidden/withheld/destroyed, one should always question motive.
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