Friday, October 27, 2006

Fire Island

Yesterday, a day to remember, took us to Mexico City. At one time it was the largest city on the Earth, and it still may be so... 30,000,000 plus folks living in a valley between two 12,000 foot peaks. The airport elevation is 7,600 feet above sea level; only a few hundred feet beneath the maximum take-off and landing altitude for most airliners. As we descended, very carefully, into the Mexico City area, I was struck, once again, about how massive this place really is; think about it... 30,000,000 + people living here, most in poverty. The initial approach fix is crossed at 12,000 feet above sea level at a right angle to the runway! Unreal, and that's putting it mildly. The air pollution is so bad, that you can actually taste it, smell it, and feel it on your skin. The landing visibility usually hangs around four miles, on a clear day. Crossing the runway threshold at 7,800 feet yields a higher groundspeed than, say, landing at Seattle. The air is thinner here, so the aircraft has to move faster to capture the same airspeed requirements. Hence, the runway is a 12,000 foot long piece of rough concrete. The engines and brakes work harder than normal to get the weight slowed to taxi speed. Taxiing to the gate, we were watched by hundreds of people that live on the perimeter of the airport in cardboard (literally) shanty towns, complete with laundry flapping in the yellow breeze.

The employees at the Mexico City station do an outstanding job of turning our aircraft around for the northbound flight. They truly love their jobs, as they are coveted. Hating management is not an option down here. The weight and balance is done long hand with a hand calculator. The numerical entries, via pencil, are always clear, concise and correct. Quite impressive. Fifty minutes later we were punching through the pollution layer into clean sky. Before take-off, I sucked 100% oxygen to clear any potential pollution caused stupid molecules running around in my feeble brain.

A few hours later, Redondo Beach sand was between my toes as we overnighted in LAX.

That was yesterday... Today, it's 25 degrees Fahrenheit in Anchorage with sunny skies. No pollution here, that you can see or smell, anyway. Riding in the crew van enroute to the hotel, a cow moose was blocking our path, until she slowly ambled into the trees.

We crossed the jet stream in the vicinity of Sandspit (YZP) at 32,000 feet. The wind velocity peaked at 203 m.p.h., 70 degrees left of our nose. Maintaining course required upwards of 25 degrees correction into the wind. The wind tunnel was about 30 miles in diameter and no turbulence was associated with it. Truly amazing... Imagine the nights before inertial navigation or global positioning magic; then throw in an undercast. Navigators had their hands full dealing with winds like these.

Finally, after six hours, we descended into Anchorage airspace, turned final approach over Fire Island and made a passable landing, mine. I would rate it about 80% on a scale of 1-100.

Day three of a four day...The adventure continues.

10 comments:

Colin Summers said...

Great writing as always. I'm happy to see that you are rating landings. I have only 427 of them and I fret and grade each one looking for improvement. Nice to know that doesn't change with a few thousand in the log book.

Anonymous said...

Very interesting post - especially about landing in Mexico City and I can't believe the 203 mph jet stream - had no idea it would be that much. Love your blog and read it faithfully.(I am a 172 pilot).
Liz

Anonymous said...

How do they do your schedule Dave? Is it usually 4 days on, 4 days off?

Anonymous said...

Great post. Keep up the hardwork dave.!

Ben said...

Dave, i have to admit that even though the residents around Mexico City Airport are living on low budgets, i`m still jealous of the fact that they can just stand in their own yards and watch the aircraft, to me that seems too good to be true!

Joel said...

Dave, I live about 4.25 miles from the threshold of runway 4R at ORD, right below the approach path. At about what altitude would an airliner typically be this far from the runway?

-Joel

NovemberChild said...

I agree with Ben & Joel, most people cringe at the thought of living under the flight path, but I truly love it.

I sit out on my patio watching those beautiful jets fly overhead carrying hundreds of passengers. I wonder where they are going or where they are coming from. As I sit there I am jealous that I'm not sitting inside looking down.

Anonymous said...

Hey Dave Great Artical on MEX...dirty city for sure..I got a link last night from another dispatcher buddy of mine at UAL for the first approved RNP approach to a city in Tebet! which is at 9670 msl! it has the first flight video to view..very cool very its a 757 doing the flight..this approach requires 108 waypoints to fly....it was produced by a company called Naverus..check out this link... down in the bottom of the page is the videos..cool stuff

Best regards, Craig H. IN MCO

http://www.naverus.com/RNP_at_Linzhi.htm

Anonymous said...

80% on any scale is still 80% :D

wil said...

Dave,

You might enjoy the video I posted today.