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Welcome to the CPL HPL question and answer forum. Please feel free to post your questions but more importantly also suggest answers for your forum colleagues. Bob himself or one of the other tutors will get to your question as soon as we can.
Hi Bob Sir. One of my friends recently sat the ATPL HPL exam, he passed however he brought back a question that has left me confused and I'm sitting my exam soon. The question goes: For a smoker, degradation of night vision usually begins at:
(D) Ground Level
**reason for confusion is that I know night vision deteriorates at 4000 ft, however, is that for a normal person & is so then would a smoker have a night vision deterioration at a lower altitude or same altitude?