I received the following information from a friend who in my experience
always knows what he's talking about.  He credits it to

> This information from the Airport Search Engine at
> http://www.uni-karlsruhe.de/~un9v/atm/ase.html

> YHU Montreal, QC (St.-Hubert Airport), Canada
> YMX Montreal, QC (Mirabel International Airport), Canada
> YMY Montreal, QC (Victoria STOLport), Canada
> YUL Montreal, QC (Dorval International Airport), Canada

There were also these.  Depending on whether the file is supposed to be
strictly airports, or all extant codes of this coding scheme, it may or
may not be good to put these in.

> List of Metropolitan Areas
> 
> These codes don't specify single airports but whole areas where more than one airport is situated. 
> 
> 
>      BER Berlin, Germany
>      BGT Baghdad, Iraq
>      BHZ Belo Horizonte, MG, Brazil
>      BUE Buenos Aires, Argentina
>      BUH Bucharest, Romania
>      CHI Chicago, IL, USA
>      DTT Detroit, MI, USA
>      JKT Jakarta, Indonesia
>      KCK Kansas City, KS
>      LON London, United Kingdom
>      MFW Miami, Ft. Lauderdale and West Palm Beach, FL, USA
>      MIL Milano, Italy
>      MOW Moskva, Russia
>      NRW airports in Nordrhein-Westfalen, Germany
>      NYC New York, NY, USA
>      PAR Paris, France
>      OSA Osaka, Japan
>      OSL Oslo, Norway
>      QDV Denver, CO, USA
>      QLA Los Angeles, CA, USA
>      QSF San Fransisco, CA, USA
>      RIO Rio de Janeiro, RJ, Brazil
>      ROM Roma, Italy
>      SAO Sao Paulo, SP, Brazil
>      STO Stockholm, Sweden
>      TYO Tokyo, Japan
>      WAS Washington, DC, USA
>      YEA Edmonton, AB, Canada
>      YMQ Montreal, QC, Canada
>      YTO Toronto, ON, Canada

					der Mouse

			       mouse@rodents.montreal.qc.ca
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