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Old 29th July 2006 | 23:56
  #15 (permalink)  
PantLoad
 
Joined: Jul 2006
Posts: 451
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From: USA
Glide DX

Yes, the 737-200/300/400 were pretty much the same. If you were descending straight in (no downwind or base turn to speak of), you needed to be 35 miles from touchdown at 10,000 ft AFE and 250 kts. That gave you a 3:1 plus an extra five miles for deceleration and dirty up.

This is the rule I always used, and it worked fairly well (no wind). Of course, if you were having to turn around and land the other direction (downwind/base/final) you could be 10,000 ft AFE and 250 kts at 25 miles. If you were doing a base entry, 10K/250/30 miles worked.

Descent profiles above 10,000 (or above your speed limit altitude) was (no wind) maybe 2.5:1...depending on how far down you pushed the nose.

Of course, all of the above assumes idle thrust and no wind. If you have to keep a bit above idle for pressurization...or if you're running engine A/I...or if you've got like maybe a 100 kt average tailwind...you'll have to add a bit (like maybe 10 miles or more....if you have to do all three...add maybe 20 miles).

Also, this assumes spool up at 500 ft AFE (VMC situation).

PantLoad
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