PPRuNe Forums - View Single Post - Instrument Rating Drift Allowances???
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Old 14th Jun 2006, 17:30
  #24 (permalink)  
MOR
 
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AerocatS2A

And exactly how do you work out what that bank angle should be?

Centaurus

If you overshoot the inbound leg that's OK - just ensure you are back on track to the aid before reaching overhead. I also knew the bloke in DCA who confirmed multiple drift angle corrections was not on because of the danger of straying outside the protected area
Actually it isn't OK. Leaving aside for a minute the fact that the wording assumes still air, the rule for holds - in the rest of the world, anyway - is that you should regain the inbound track as soon as is practicable after turning inbound. As for straying outside the protected area, there is absolutely no chance of that happening if you fly a drift-corrected outbound leg which subsequently allows a rate one turn to place you back on the inbound track. If your guy believes that is not the case, he needs to have a look at the construction of a PANS OPS II hold. The clearance surfaces are well outside any possible deviation that is purely to correct drift. The holds (and the protected area around them) are designed with exactly this purpose in mind.

That, anyway, is true for PANS OPS II holds, which your government says it abides by for these purposes.

Having said that, it would be just like Australia to try and do it differently to the rest of the world...
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