On Saturday I was taking Kitt out to the Yarra Valley for a “Hen’s Party” winery tour (the “Buck’s Party” was last weekend – paintball – I’ve still got bruises) when I spotted a sign saying that Lilydale Airport (YLIL) was having an airshow. Neat! As I was thinking I’d better lock the date in to be there, I realised that the damned thing was happening TODAY!
Our route from Melbourne to Yarra Glen took us right past the airport (the road goes just south of the threshold of RW36) and after some frantic looking between the road and the airport, I did confirm the presence of a good lineup of aircraft. After getting Kitt to the meeting point and seeing her off with the other ladies (note: Hen’s parties are SCARY!) I ran a quick errand and then high-tailed it back to the airport.
On arrival I noted that there was no one taking the entry fee so I figured it must be getting close to the end of the day (it was 3pm by the time I got there). I walked in and started checking out the aircraft on display. The announcer was talking about Dick Hourigan’s Mustang (a license built and slightly modified P-51 manufactured in Australia during WWII) which was in the process of taxiing out to take off. Last time I saw this Mustang was at the 2002 Albury Airshow (scroll down the linked page to see photos of it) and it sounded great just taxiing in the distance. I didn’t bother with photos as I figured I’d get them when he came back in so I just enjoyed the take off. He did a low downwind pass then came back around a bit faster (and was that a tad lower?) for the upwind pass. Damn I love the sound of a Merlin! After that pass he left the area (which seemed to surprise the announcer a little) and that was the official end of the show.
Just as I was wondering who I’d have to talk with to get onto the flight line for some good photos, I realised that they’d dropped the barriers and we were allowed out with the aircraft. Wow. You have to appreciate that.
There was a huge line up to check out the Soko G2A “Galeb”, a Yugoslavian jet trainer that’s designed to operate from grass runways. Still flying under its Yugoslavian registration, it certainly did draw a crowd. As the only jet aircraft there it was like being the prettiest girl at the dance. Most people wanted to get their photo in the rear cockpit (mostly kids) and the pilot was on the wing helping them out. I managed to get some shots in the front cockpit and had a quick chat with pilot while this was going on. He’s been invited to the Avalon Airshow which is great as he’ll probably be parked on the warbirds tarmac where I’ll be working. Excellent!
I’ve loaded the photos I took into my photo gallery for you to enjoy. There were a number of aircraft there, including at least 3 Yaks. I just wish I’d grabbed a couple of shots of the Mustang in flight – oh well, maybe it’ll be at Avalon along with a few others like the 2007 show.
Some of the aircraft on display included:
- American Champion Super Decathlon (VH-JIR)
- Auster J1N (VH-SAH)
- CA18 Mustang
- CA22 Winjeel (VH-EDA)
- Cassutt Racer (VH-MXA)
- Cessna 206P (VH-TCZ)
- Cessna 337A (VH-NFW)
- Extra 300S (VH-XTR)
- Pacific Aerospace CT4A (VH-CTV)
- Piper PA22 (VH-RDB)
- Stinson L5B (VH-CDF)
- Soko G2A “Galeb” (YU-YEA)
- Yak 50 (VH-BYJ)
- Yak 52 x 3 (VH-RED, VH-YKK & VH-YLG)
There were other aircraft there, of course, including a few helicopters and lighties in the static area. After chatting with some of the folks working airside I headed out through the flight school to find out what the reason was for the airshow (“Oh, we just do them now and then”). After a quick chat I returned to the car and spent the rest of the afternoon hanging out with a friend who flies for Global Ballooning. We sat on his veranda and chatted as the afternoon drew to a close and a light aircraft practised aerobatics overhead. Not a bad way to spend a few hours.
Freaky ADIRU Behaviour Near Perth
As some of you may be aware, on October 7th 2008 a QANTAS A330 traveling from Singapore to Perth was about 154km west of Learmouth, West Australia when it entered a rapid descent, causing unsecured items & people to float up in the cabin, leading to injuries on board. The aircraft declared an emergency and diverted to Learmouth.
The ATSB has released a preliminary finding that states that a fault in one of the Air Data Inertial Reference Units (ADIRU #1) led to the incident. Investigations are continuing and QANTAS have instigated changes in their procedures should the symptoms appear again.
Well, guess what, the symptoms have appeared again! On Dec 27th, a QF A330 going from Perth to Singapore had a similar ADIRU problem in a similar part of the world (this time about 650 kilometers south of Learmouth). Fortunately the crew were able to enact the revised procedures and disconnect the systems, avoiding any upsets. They then decided to return to Perth.
The ATSB says it’s too early to draw conclusions but they note that it is the same problem and also that it occurred in a similar area to the previous incident. As such, they will include this incident in the investigations being performed for the Oct 7th incident which should produce a factual report about mid February.
One of the more interesting aspects of the Oct 7th incident is that the potential was raised for possible external influence on the ADIRU due to either portable electronic devices on board (laptops, mp3 players, etc) or from the Harold E Holt Naval Communications Station near Learmouth (there’s also a Wikipedia article on the comms station).
The situation gets even more interesting if you note that a Malaysian Airlines 777 had a similar ADIRU fault back in 2005 (PDF) in roughly the same area. Of course, the 777 has a different ADIRU, different software and the problem was traced to failed accelerometers and a software fault, but still – very interesting.
Hmmmm – I wonder if the military have been experimenting with something and accidentally zapping ADIRUs every now and again? (cue X-Files theme…).