Tag Archives: aircraft

St. Maarten aircaft landing videos

While talking about cool places to go, I was looking up links to St. Maarten (visited there in 2001).   Which, inevitably brings me to look up YouTube videos of landings there.    Here are a few that I really liked.. the last one gives you a REAL feel for how hairball that approach is!

Airbus A340 landing. Keep our head down:

No, really, you want to keep your head down! (KLM 747)

First of the takeoff videos. Does not show the human windsocks but.. you sort of get the idea:

What it looks like inside the jet. Yeah, that mountain really is pretty damn close!

This is the longest of them all, at more than 7 minutes, but there are some great shots of the takeoff there too (check time mark 2:00).

Shortly but goody. It looks like the jet is just at the fence while you are standing them having sand hit you at near super-sonic speeds. Good times!

Here is a short one shot from the Sunset Beach Bar.

Now.. this is the most hairball of the bunch. That fence on the end of the runway is only 5′ tall for a reason!

And, finish it all off with a pilot’s view of SXM

I’ve pirated the pilot’s comments from his video post since, you might never see them viewing the video in my page:

Landing St.Maarten from cockpit 747. After nosewheel landing camera touched windshield causing crackling noise.

For those viewers who made comments (or new viewers who are thinking about making the comment) that this approach is too high and/or too fast or whatever else you might think, here some free 😉 flying lessons from someone who’s flying B747’s for 20 years:

On an approach on instruments a B747 should cross the runway threshold (= the piano keys) with the main wheels at ± 35 ft above threshold. The 747 is so big that at that point the altitude of the cockpit is 35 ft higher, so the cockpit is at ± 70 ft when main wheels cross the threshold.
On a visual approach, as is the case here at St.Maarten, we have to have some more margin. Normally the pilot aims to see the runway threshold disappear under the nose at 80 ft (mind you, the main wheels are at that moment still NOT above the threshold) to have sufficient main wheel clearance.
If you look at the video and notice the altitude callouts, you’ll see the threshold disappear under the nose at the call 50, so actually I am a bit too low in stead of too high. (In fact I am only too low for a visual approach. If you look at my landing at JFK http://www.youtube.com/watch?v=q4YoXy… you will see that I cross the threshold also at 50 ft, which is normal on an instrument approach. Note: the automatic altitude callouts you hear on this video are Radio Altimeter altitudes. The Radio Alt is zero when the main gear is on the ground with struts extended.)

Now, there are quite some viewers who think we landed too far on the runway. What follows from earlier explanation is this:
We approach a runway at a three degrees approach angle. If main wheels cross the threshold at the correct altitude, the main wheels will hit the runway at approx 900ft (300m) behind the threshold, that is, if you don’t flare the airplane. If you look again at the video and wait till you hear 50,40,30,20,10 and see the solid white markers, they are at 900ft behind the threshold and the plane touches down right behind them, because I did flare the airplane. (Passengers seem to hate hard landings!!)
THIS IS THE NORMAL TOUCHDOWN POINT FOR A B747.
The FCTM(=Flight Crew Training Manual) from Boeing says: flare distance is approx 300 to 600mtr (=900 to 1800ft) beyond the threshold.

So, please, stop nagging about this landing being too far on the runway.

And then something about too fast: On this approach the 747 weighs about 260.000 kgs. The required approach speed is then 150 kts which is about 175 mph or 280 km/hr. So what about TOO FAST? If we fly slower, we will fall out of the air!!

Air France 477 – assembled time line

I was not able to find a lot of information on the aircraft communications time line past the first couple of days of the search. Of the information I was able to obtain, this is the short time line I was able to put together.

Following each, the ‘[#]’ links to the reference article where information was obtained.

0200 GMT – pilot sent a manual signal local time saying he was flying through an area of “CBs” — black, electrically charged cumulonimbus clouds that come with violent winds and lightning. [1]
0200 GMT – pilot reports turbulence [2]

0210 GMT – Autopilot had disengaged [1] [2] [3]
0210 GMT – Key computer system had switched to alternative power [1]
0210 GMT – Controls needed to keep the plane stable had been damaged [1]
0210 GMT – Alarm sounded indicating the deterioration of flight systems. [1]

0213 GMT – Failure of systems to monitor air speed [1]
0213 GMT – Failure of systems to monitor altitude [1]
0213 GMT – Failure of systems to monitor [1]
0213 GMT – Control of the main flight computer failed [1] [2]
0213 GMT – Control of spoilers failed [1]

0214 GMT – Loss of cabin pressure [1]
0214 GMT – Complete electrical failure [1]
0214 GMT – Cabin in Vertical Speed [2] [3]

The latest information on the wreckage and remains recovery:

A French nuclear submarine has arrived at the scene of the Air France crash in the ocean off Brazil to start searching for the flight’s data recorders.

The “black boxes”, which emit a locator signal for about 30 days, could be up to 6,100m (20,000ft) deep, on the bed of the Atlantic.

They could provide vital clues as to why the Airbus A330 crashed on 1 June.

Brazilian air and sea searches have now recovered 41 bodies from the plane, which had 228 people on board.

The submarine, and Brazilian naval and air forces, have a large and remote area of ocean to search.

Debris from the plane, which was flying from Rio de Janeiro to Paris, has been found some 1,000km (600 miles) north-east of the Fernando de Noronha islands. The islands are about 320km off the north-eastern coast of Brazil.

‘Very complicated’

French military spokesman Captain Christophe Prazuck said the submarine – the Emeraude – should be able to cover an area of 26 sq km each day. It has advanced sonar equipment on board.

“There are big uncertainties about the accident site, the ocean floor is rugged… so it’s going to be very difficult,” he told French radio.

“It’s going to be very complicated and we’re going to need a lot of luck” to find the plane’s data recorders.

A recovered section of the Air France jet, attached to a Brazilian navy vessel, 9 June (image from Brazilian air force website)

The US is also joining the search, sending two sophisticated listening devices, which will be deployed on two large vessels hired by France. They will be towed in a grid pattern across the search area.

If the aircraft’s two black boxes are located, a mini-submarine called the Nautile will be sent down to retrieve them. The vessel, which has a crew of three and is about 8m long, is the same one which explored the wreck of the Titanic.

FULL ARTICLE:  http://news.bbc.co.uk/2/hi/americas/8092715.stm

The tragedy of Air France 447

Since the disappearance of Air France 447, an Airbus A330-200, (the exact same model of aircraft flown by Northwest Airlines, that I took to Amsterdam last month), 800px-nwa_a330-300_n805nw_arpI have been following the news reports pretty closely.  A lot of speculation surrounds, what the call the doomed flight, but until they get the ‘black boxes’ this is mostly speculation.   However there are some unique bits of data that the aircraft’s monitoring systems sent to AirBus (or maybe Air France, it’s not clear to me where the messages were sent) that the events leading up to the crash occurred over a 10-15 minute time period.  Plenty of time for pilots to issue a ‘Mayday’ message if they’d had any indication of an impending problem.

From the various reports I’ve read, I’m going to start to assemble some timelines, and references to the article sources as possible.   It will likely take me a day or so to get this collected.  Once I have managed to do so, a follow-up message will be posted.

My prayers go out to the families affected, and especially the passengers on the fated flight.  From what I have read so far, it would appear the aircraft broke up at altitude.  I can’t image what that might have been like.

UPDATE: Timline Published.