Hopharrigan,
I think the correction in the Jumbo-400 manual to the altimeter is probably in ref. to position error and instrument error, but it is definitely not temp. error correction. Call the boss at Boeing, I gave you his number and do us all a favour, find out the facts! I don't want to sit as a pax on your a/c over the Alps when you lose one and end up descending to MSA with a Zurich temp. of -15'C, cos your going to bang into a hill. My flight Ops manager was a Canadian as well, these guys know their stuff and it's their bread and butter.
I spoke to a CAA guy last week who is an avionics project specialist, his opinion as well was like yours, in that you don't need a correction.
Does anyone remember any CAA question in the ATPL's that refers to Altimeter temp. error, whether in Perf. A or Instruments. I don't and they are talking about 35' clearances on obstacles, no way!
Less than 10% of the pilots I work with know about this problem area, and certainly none of the CAP 509 people, so what is going on?
CAA reply please.
[This message has been edited by Mach (edited 26 November 1999).]