DFC, I'm not sure that the light spacing is still published in the AIP entry for the appropriate aerodrome, and would appreciate a pointer to it.
What I found is that the general AIP (June 2005) says (wrt to edge lighting) much the same as I quoted above:
4.4 Runway Edge Lighting
4.4.1 Runway edge lighting has longitudinal spacing of 60M for instrument runways but may be up to 90M for non-instrument runways and for non-precision approach runways at country aerodromes.
Then I trawled through the AIP online, and the aerodrome charts in the DAPs and they don't show it (links below for non-Oz PPRUNERs)
http://www.airservices.gov.au/public...RMAD01-103.pdf
http://www.airservices.gov.au/public...UDAD01-101.PDF
So a mate checked his Jepps, and the light spacings have been removed from those except "where not standard."
Here-in lies the rub - since it is standard according to the MOS Part 139 to have 60m OR 90m spacing on the same class of runway, a change from one to the other shouldn't trigger a "non-standard" action. So there is no reason for the plates to show anything to reflect the change.
Turning to a practical example, Broome 10/28 is a non-precision approach runway with a DME/NDB and a GPS approach.
(using my simple-man's rule of thumb: instrument runway = ILS; non-precision approach runway = GPS/DME/VOR/NDB; non-instrument runway = nothing)
At present its lights are at 90m spacing. If they get replaced (because the earth leakage has got too high because the cables are old and rotten or the ants have eaten too much insulation and it is cheaper to replace than repair), then they'll have to get replaced to the 60m spacing.
I still can't see where any pilot will get told about that. There is no tower, so you'd call Brisbane (4000 kms away). And come night-time, the airport manager is tucked up in bed or down the footy club. I can't see a reliable and practical answer. Can anyone else?