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CRP5 Issues

Old 16th Jun 2020, 20:29
  #1 (permalink)  
Thread Starter
Join Date: May 2005
Location: Essex
Posts: 3
Red face CRP5 Issues

I know it has been asked before, but not recently it seems. I have a Pooleys CRP-5 on which the slide rule (wind) part is really stiff. Unscrewing the screws doesnít make a difference, and also I find that the Wind calcs and some other numbers it produces are always slightly different to the correct answers (and I am using it correctly). Question is, can I use the Transair equivalent with the Wind Arm in the CAA/EASA ATPL exams these days, should I try another type (that can be used in the exams) or just accept what I have and the shoddy results it produces? Thanks in anticipation.
limaindia is offline  
Old 16th Jun 2020, 21:49
  #2 (permalink)  
Join Date: Feb 2000
Location: UK
Posts: 13,765
I used an AVIAT 617 for my writtens, and passed them all first time. The odd real bastard question, I drew an A4 sized triangle of velocities on the exam paper!

Nobody at CAA or EASA cares which specific form of Flight Computer you take into the exams. It is *assumed* that the CRP-5 is what was used for setting the exams, but I suspect that may just be rumour anyhow.

The AFE flight computer is a nice piece of kit, I've never heard any complaints. There are also various American variations, usually called E6B.

Last edited by Genghis the Engineer; 16th Jun 2020 at 23:44.
Genghis the Engineer is offline  
Old 17th Jun 2020, 05:16
  #3 (permalink)  

Join Date: Nov 2000
Location: White Waltham, Prestwick & Calgary
Age: 68
Posts: 3,818
As a slide computer the AFE ARC 2 is much better value for money, better made, etc. We recommend the Jeppesen CR-3 which is a circular one.
paco is offline  
Old 17th Jun 2020, 07:05
  #4 (permalink)  
Join Date: Jan 2005
Location: Hotel this week, hotel next week, home whenever...
Posts: 1,360
Try the smallest of small amount of talcum powder to lubricate the wheel. Be careful though, as any more than the bare minimum and youíll be finding white stuff everywhere for years.

I would think that any make that can handle compressibility should be OK - if thatís still part of the syllabus.
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