[MrPeaBody]

Oversight or lack there of - Part III

Some images to clarify this transitional surface business courtesy of the NZCAA. Keep in mind the transitional surface arrangement over the dutch is 1:7 or 8.13 degrees. This 1:7 slope is NOT a CASA requirement as suggested in the EAPL document.





Now this image is how it's worked out in Australia per the CASA MOS.



The NZCAA and FAA have adopted a more stringent definition of the transitional surface than CASA has; the reason being to protect airstrip space from possible encroaching development.......sound familiar.

I thought I had gotcha moment when I read the NZCAA requirements but that was just my lack of understanding of kiwi englush. In their requirements the strip width can be a minimum 150m wide; conveniently the same as runway 35 at Essendon. Then I worked out they are referring to 150m wide each side of the strup; why they couldn't have just written 300m is anyone's guess.

It makes me wonder though if someone tried to pass off the NZ requirement as a CASA requirement and conveniently misinterpreted the 150m. If it had been prepared in accordance with the NZ requirements correctly; there would not be any buildings at the DFO sight.

PB

PB