Another subtle difference with the Ops routes is that the flight contains more scenarios which have to be considered and acted upon. In the case of my first one, my instructor simply said that during a cruise check the carbon monoxide detector was indicating 'caution', and I now had to act with that information. The first concern is that the human body actually has a stronger affinity for carbon monoxide than it does oxygen (about 200 times!), and the CO displaces the oxygen from the blood, effectively suffocating the individual. The longer the CO poisoning continues the higher the likelihood of passing out, so time is of the essence. The most common cause would be a crack in the exhaust manifold, as the hot air to the cabin is heated from the hot exhaust. So the air is shut off, and the windows opened to ventilate the cabin.
I managed another flight this week up to Ardmore, which is New Zealand's busiest airport. Normally the traffic pattern is rather intimidating as so many aircraft are trying to fly so close to Aucklands airspace, but as I left Hamilton at 0740 and it was pretty windy, I pretty much snuck in and out without seeing anyone else (at least I hope there was no-one else!!). I was due to fly another solo on Friday, and one today with a night flight, but both days were cancelled due to high winds then low cloud. With four days of good weather ahead there is a real possibility I could finish my VFR phrase by the end of the week, and if that does happen I could in fact get home on time, but there are no guarantees, just hope!




