Under pressure...

1033 hectopascals to be precise ;)

A (very) high pressure system has been sitting on the country for the last couple of days... and as they pointed out during "Principles of Flight and Performance", High Pressure + Low Temperature = Awesome Performance. So, I figured I was in for a little fun last evening.

I was somewhat un-current at night, so I decided I would take the 152, 172 and Cherokee and do my 3 take-offs and landings. I pre-flighted DJU (the 172) and LMA (the Cherokee) and double checked I had enough gas... which I did. Chris and CFI Rob were taking JBL (the 152) for a quick jolly, so the plan was to go 172, 152 and finish with LMA.

I was under a little time pressure, as the night circuits curfew kicks in at 2230hrs local, but thankfully the circuit was pretty much empty, so I didn't have to worry too much about other aircraft. With the conditions the way they were, DJU leapt off the ground and I struggled to keep the airspeed below 80kts and was still climbing at over 1000' per minute!

I was feeling a little rusty... and the GPS track (yay, the GPS on my new phone + OziExplorer works really well!) kind of bears witness to this.

What a mess...

After taxiing back in, I pre-flighted JBL as Rob and Chris had returned, double-checked I had enough gas, had a quick pitstop and taxied out. I was feeling more comfortable for the 2nd lot of circuits, as the GPS track for that flight shows... Not too shabby if I do say so myself ;)

The way it should be...

And then it was time to take LMA... I was really pushing the curfew cut-off, taking out at 2210, but I snuck in 2 circuits before 2230 and vacated to the city for a quick scenic cruise. After flying up the harbour, I rounded SkyTower, headed out to One Tree Hill and requested (and was given) permission to enter the control zone to overfly NZAA and take a shortcut back to Ardmore.

And then things got interesting as the tower informed me I might have a bit of a hold at Mangere Town due to some departures... unless I wanted to turn left, head east until I crossed the southern motorway and then direct to Ardmore. I was more than happy with that, as I didn't really want to overfly NZAA, I just wanted the shortcut ;)

So I turned east, and enjoyed the slightly different scenery... before realising that I was heading towards my house :) Unfortunately, just as I was nearing the motorway and before I got too close to home, I was advised I could track direct, and as I didn't want to overstay my welcome, I set heading for Ardmore and watched my house slip by the port wing.

Looks like a giant sock puppet!

A most enjoyable evenings flying... and I am now current like a current thing ;)


This flight: 0.5 + 0.5 + 0.8 PinC Night
Total Hours: 179.0 (78.9/76.6 Day, 8.6/14.9 Night, 7.0 IFR)

A complete set

Well Euan was right... I did indeed kick some arse on my CPL Met exam... 96% to be precise ;)

So now I have the full set of CPL exams completed, which has now earned me a 'CPL Exam Credit' which is valid for 3 years. I'm really hoping it does not take me that long to actually get the CPL :P

Seeing as how I am in 'exam mode', I have decided to push on and do my Instrument Rating exams as well... so it is more book time for me. I am hoping to get started on the CPL cross-country syllabus as well.

I have also been tagging along with Trevor on some of his Instrument Rating adventures... Eyes Open, Mouth Closed... 'Sponge' mode engaged!

I have picked up quite a lot and I'm hoping this will pay off when I am the one in the hot-seat trying to do fifty million things at once :P

I successfully managed to miss the Whenuapai Open Day... but I was in the back of a PA28 going around the hold at Tauranga and shooting the missed approach etc... so it was a fair trade-off ;)

On the "New Gadget" front, my boss made me an offer I could not refuse... and I have upgraded from the Nokia 6275i to an Okta Touch (Windows Mobile 6.1) PDA-Phone. Was bummed to find that it had no GPS or wifi... until I found out a firmware upgrade enabled the GPS ;) (Still bummed about the lack of wifi tho)

I have successfully got Garmin Mobile XT running on it which allows routable car navigation and am investigating my options for airbourne GPS. Unfortunately the Windows Mobile version of the software I had been using on the Nokia, TrackMyJourney, does not seem to work with the GPS on my phone... I will continue to test it, but am thinking I may need to look at OziExplorer...

Which means I will need to redo all my maps *sigh* :(

Deadlines...

Nothing provides motivation like a deadline ;)

1 more week to figure out how "The Weather"(tm) works... Not sure how I am supposed to understand it all, given that the MetService, who get PAID to understand this stuff, still can't seem to figure it out! :P

Optimism pays dividends...

It was looking like another crappy weekend... with a big storm rolling on through. However, it looked like it was going to arrive a little earlier and move fairly quickly, so I had been hoping that Sunday would in fact be a 'Sun Day'...

and it was!

I had been planning on going and doing some flying with Nick in the afternoon, but decided not to waste the conditions, so I I headed out to Ardmore fairly early to get the aircraft pre-flighted and fueled. This turned out to be a great idea, as there were a number of visiting aircraft in town for the Pilot Expo which was putting a strain on the refueling guys. One of the club members had been waiting for an hour for fuel when I got there! So when the tanker finally arrived, I got the guy to fill up my aircraft as well.

I had been keeping an eye on the weather and it was steadily improving so I figured it would be all go for the afternoon. As I was really early, I decided to take ETZ for a few quick circuits to get it warmed up, so when Nick arrived we could get airborne relatively quickly.

I totally messed up the first landing... the conditions in the circuit were a little bumpy due to some blustery winds and mechanical turbulence coming off the terrain to the northwest. My approach was a bit messey, so I ended up high and consequently I was descending quite rapidly and I flared a little late... and a little too much... and proceeded to balloon and then hit a little hard.

The 2nd circuit I opted for a flapless... extended my downwind, and flew by the numbers... everything came together beautifully and I greased it onto the runway.

The 3rd and final I tried for a short-field approach. I flew the final leg at 60kts all the way down (theoretically the approach speed should be 54, but I was carrying extra speed due to the gusty conditions). I managed to be 50ft over the threshold and still get it down and stopped (without excessive braking) by taxiway Bravo. A landing roll of maybe 150 to 200metres, so I was pretty happy, especially given the wind conditions.

I taxied back and waited for Nick to arrive... only to get a text message saying he had been called into work and wouldn't be coming. So I decided to solo. Grabbed the weather for the far north which looked decent. Put in a flight plan to overhead Dargaville then on to Kerikeri, Whangarei and back to Ardmore. Double-checked the fuel onboard and then grabbed my gear and headed off.

Flying across the harbour to Rangitoto and the VFR transit lane by Whenuapai I was dodging aircraft left right and centre... seems everyone was doing city scenic flights! After that I saw a grand total of about 4 aircraft the rest of the flight, until I got back into the circuit at Ardmore.

Once I reached the far edge of the Whenuapai Control Zone I set course for Dargaville and climbed up to 2500' for the cruise north. It was a little bumpy so I tried 3000' and it was a lot smoother.

I also got a chance to test out the GPS on my phone after having spent ages getting the aeronautical charts loaded. It seemed to work really well. My reckoned position on my paper chart matched up pretty well with the GPS, and the actual location. The only issues I had were that it was giving bearings in degrees True. Which is problematic when you're navigating using a magnetic compass and a DI aligned to the magnetic compass ;) Not a huge problem... just have to allow the -20 or so degrees for magnetic variation. The other issue was that the phone battery died after around 3 hours... into a 3.5 hour flight! Might have to see if the cigarette lighter is compatible with the cigarette lighter charger I have... or go on shorter flights :P

Overheading Dargaville, I set course for Kerikeri and flew over some real tiger country. Some 2500' ranges and dense forests. A little unnerving and somewhat bumpy in spots. I found Kerikeri pretty easily and landed without incident and taxied to the pumps to fill up.

Heading back south at Whangarei, I thought I was going to run into some issues with myself, a parachute jump plane and one of the EagleAir Beech 1900's all arriving at the same time, but thankfully being in the little slow 152 meant I was able to sequence in behind everyone else pretty nicely without any hassles. The weather off to the east of Whangarei looked pretty bad... some massive cloud development and lots of rain. However it stayed where it was and I was able to touch and go and set heading for Ardmore without getting anywhere near it.

I made it back without further incident and managed to slot into the traffic pattern without too much hassle. Just a 172 from AFS that was overheading at the same time I was joining non-traffic side. Again, as I knew he would be faster than me, I just slowed up a little to get the spacing right and it all worked out pretty well.

If you look closely, you can see where the GPS died

A nice little afternoon jaunt, another 3.4 hours of cross-country time and another little personal milestone...

I now have more PinC time (89.7) than Dual time (87.5) ;)


This flight: 0.4 + 3.4 PinC
Total Hours: 177.2 (78.9/76.6 Day, 8.6/13.1 Night, 7.0 IFR)

Where's my snorkel?

Unfortunately, Yellow does not equal sunshine
AUCKLAND (NZAA):

METAR NZAA 191900Z 02015KT 9999 SHRA FEW006 BKN010 BKN013 21/20 Q1009
TEMPO 4000 RA BKN008 =

SPAR NZAA 191658Z
360/20KT X/W MEAN15KT 15KM RED 4000M SHRA FEW006 BKN010 BKN015=

TAF NZAA 191701Z 1918/2018
02018G30KT 9999 -SHRA FEW012 BKN035
TEMPO 1918/2001 4000 RA BKN008
BECMG 2001/2003 32015G25KT
TEMPO 2001/2006 3500 TSRA BKN012 FEW020CB
TEMPO 2006/2012 6000 SHRA BKN012
BECMG 2012/2014 26008KT
2000FT WIND 02025KT
BECMG 1918/1920 35035KT
BECMG 2005/2007 31015KT =


New Zealand is hiding in there somewhere!


Anyone got a bucket?

All quiet on the western front?

Despite the mostly good weather[1] we have been fortunate enough to enjoy over January and February, I have managed about 3 hours worth of flying.

This is not to say that I haven't been flying, I just have not been doing the actual flying.

Went with one of the other club members up to Whangarei as safety pilot so he could rack up some instrument time under the hood. I commented it was the first time I had been to Whangarei in the daytime... I got that same "WTF?!?!?!" look I usually get when I tell people I like flying around doing cross countries in the dark ;)

And the past few weekends I have been down in the Tron picking up tips on an instrument rating again as Trevor has been preparing for his Instrument Rating Flight Test. I did actually fly us down one trip. Just to help with the currency.

Also, I have been told to consider doing an IR before I do my CPL... as a bonus I can use the IR hours towards the 200hr minimum requirements for a CPL, so in a way, the hours are 'free'. Plus it also teaches you about precise flying.

One stumbling block however will be the 50 hours PinC Cross-country time as I currently have around 35. So I would need a couple of decent 4 hour trips to top it up to the minimums. Maybe a weekend down to see my folks near Palmerston North.

And of course, the exams required... *sigh*... I am currently struggling through the study book for my last CPL exam, which is meteorology. If only it were as simple as the weather rock ;)

Something to think about anyway...

In other news, I received a new mobile phone from work as we recently moved from Vodafone to Telecom... not really news, except for the fact that my new phone (a Nokia 6275i) has built-in GPS. And a really shitty built-in GPS application which does little more than give you your co-ordinates. Which got me thinking[2]... I wonder if anyone has written any cool little GPS apps for these phones???

I found a couple of things... MGMaps, which was relatively easy to install and setup and I even found a complete copy of the GoogleMaps street maps for New Zealand that someone had thoughtfully compiled for this application, so you could put it on a memory card and not get horrendous data charges for downloading maps on the go.

I thought it would be useful to get a 'rough' idea of where I was while flying around the countryside, as a handy little backup device. I even tested it when I was safety pilot for Joseph on the trip to Whangarei and it worked really well. I even had the crazy idea of scanning in my aeronautical charts and using them instead of googlemaps, and had some initial success, except the application kept crashing if you scrolled around and zoomed in or out too much.

Aside from the odd crash, this program had one serious flaw. It did not do 'tracking'. So, at the end of the journey, you cannot see the path you took. It has an online service so you can see live updates of where you are, and people have written scripts that simply poll the server every 30 seconds and log all the individual points as you move about... but that was a bit clumsy and too much like hard work[3]...

So I went looking for a better solution. Which is when I discovered TrackMyJourney. At first it looked like a service similar to the live update feature of MGMaps... but it turns out that is just part of it. This application is pretty much a full-featured GPS system for your Java capable phone/pda etc...

It did not suffer from the same application crashes when scrolling about or zooming in and out... it offers all sorts of views, options, waypoints, routes and most importantly tracking! :)

So then this idea of scanning in my aeronautical maps popped into my head again. TMJ provides a little utility for generating your own maps from picture files. So all that was needed was images of my maps, so I:

• 'Patiently' scanned in all my VNC's for the North Island (thank heavens for the A3 sized colour scanners at work!)...


• Then I stitched them back together using photoshop...


• Then I loaded them into a really nifty tool called 'MapCruncher' by Microsoft Research... essentially you take "your" map and load it into the application which displays it alongside "Virtual Earth". Then by lining up exact locations on each map, you calibrate your map to the 'real world'. In my case, the aeronautical charts have the latitude and longitude graticules printed on them, so I could mark fairly precise locations all over the map giving a decent rendering. I actually had to write a Perl script that would go through and 'edit' the map (or Mashup) config file generated by MapCruncher, as it was just too tedious to edit 50 or 60 points on each of the 6 North Island VNC's...


• Then I rendered out the re-projected map using MapCruncher... which broke it down into little 256x256 pixel tiles, named in 'Quadkey' format... If you're really interested you can read about it here, but be warned it is not exactly riveting!


• As this format is not in nice rows/columns, it was going to be a total mission to stitch these tiles back together to create a nice copy of the map to load into TMJ. So I wrote another Perl script that renamed the files into the format Y_X_zoomlevel.jpg so I could use some handy cut+paste and macro's to generate some commandlines to stitch these back together using the commandline batch processing options of a handy image utility called IrfanView...


• Once I had stitched all the tiles into a big giant map, I could load it into the TMJ image utility, and use it to generate the required map files the program needed... only I need to know the "Top-Left" and "Bottom-Right" 'Real World' Co-ordinates of my image... but I only had QuadKey's and/or X,Y values... so I wrote a third Perl Script that would automatically calculate it for me...


• Once I had those I was able to generate TMJ map files and load them onto the phone... and then repeat the entire process of stitching/aligning/rendering/stitching/re-aligning etc. for the other 5 maps!!!!

Quite simple[4] really! :/

All in all, it has been about 2 weeks of trial, error, head+desk, face+palm, lightbulb moments and extreme elation upon finally getting it all working.

The end result is a fairly useful little backup tool that should come in handy should I ever find myself situationally challenged while out flying.

I have already started 'upgrading' the functionality, as my scanned map is effectively still just a picture, so you cannot search for an aerodrome or anything like you can with a 'normal' aviation GPS. So I have also started messing about with the "waypoint" features of TMJ... I've added in all the North Island Aerodromes listed in the AIP with their co-ordinates and frequencies, so I should be able to pick an aerodrome and generate a direct track to it etc. and even do some basic 'flight planning' if required.

Now I just have to pray they don't update the charts in the near future ;)



[1] I'm choosing to ignore the ridiculous 30+ weather with 98% humidity ;)

[2] Always a dangerous thing

[3] Kind of ironic when you see what I ended up doing :/

[4] See... told you!

Another Year...

another truckload of money converted into noise+fun :)

Looking back over 2008, it certainly was quite eventful. I reached some personal milestones... like getting my PPL ;)

And started knocking off my CPL exams... only Met to do (and I am currently working my way through the study guide)

I managed to get rated in the 172 and the PA-28. I even did some aerobatics in the Warbirds CT-4A.

And I managed to get around a few different locations like Taupo, Rotorua, Whakatane, Opotiki, Pauanui, Whangarei, Keri Keri, Kaitaia, Kaikohe and even a scenic flight out to White Island.

I managed to do the odd bit of night flying and even managed a couple of night cross country's!

Hopefully 2009 will prove just as fruitful in terms of hours in the book... and hopefully might even include a sticker labeled "CPL" ;)


In other news I flew down to Hamilton on the weekend with the aim of joining up at the Waikato Aero Club... this should hopefully provide a couple of benefits (like access to a certified sim, membership in the RNZAC along with reciprocal rights at other RNZAC clubs and access to other training should I need it etc.)

Unfortunately, the usual office administrator was away, so I will need to go back again at some point and complete the paperwork. Although, I did run into Chris while I was chilling out in the Pilots Lounge... although I did not realise until I read his posting about failing to make it to Masterton. Nice to finally put a face to the name.

I also got a good wake-up call... as I finally came face to face with 'Cessna Bounce'. The grass runways at Hamilton have been baked pretty hard in the summer sunshine and it showed when the 172 hit it and bounced like it was on a trampoline. Thankfully, I had read somewhere that the trick is to give it a bit of power just after you reach the peak of the bounce to lessen the descent rate and break the cycle. So after the 2nd bounce (at which point I was starting to picture the aircraft stalling and nosing into the ground), I gave it a quick burst of power.

It worked a treat and the aircraft settled onto the ground nicely.

The landing after the return journey was much better ;)


This flight: 1.5 PinC
Total Hours: 172.0 (78.9/71.4 Day, 8.6/13.1 Night, 7.0 IFR)