Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
B727-200Windshear Recovery(Decreasing Performance)  
User currently offlineBryand From United States of America, joined Jul 2002, 14 posts, RR: 0
Posted (13 years 10 months 5 days 6 hours ago) and read 1853 times:

On the approach,at 1000 feet AGL,because of an uncontrolled change from normal steady-state parameters.............15 knots indicated airspeed,500 FPM vertical speed,5 degree pitch attitude,1 dot displacement above or below the glidescope,Abnormal thrust requirements to regain control.EXECUTE AN IMMEDIATE GO-AROUND..........Is this realilistic?To me this doesn't sound believable!Of course possible,but how likely that the average pilot can react in such a time frame?I can recall in 1978,that an EASTERN B727-200 crashed on Rockaway Blvd.NY,due to windshear(on approach).Sure that was long ago and now windshear is part of the aviation mind-set and glossary.But if not identified immediately or 20 seconds late,does the 727 have the capability and climb rate to overcome?

2 replies: All unread, jump to last
User currently offlineRick767 From United Kingdom, joined Jan 2000, 2662 posts, RR: 50
Reply 1, posted (13 years 10 months 5 days 6 hours ago) and read 1842 times:

I am puzzled a little with your explanation.

Are you suggesting an aircraft on final @ 1,000ft AAL loses 15 knots headwind (a negative performance shear)?

Our aircraft (757/767) are equipped with a windshear warning system, advising the crew of any abrupt loss of airspeed. The action on receipt of the warning is to execute a go-around, no questions asked. 15 knots airspeed loss is nothing too serious, even @ 1,000ft. The aircraft remains well above the stall even at the new speed, and the thrust from the engines is sufficient to allow a very good climb rate away from the ground.

I am sure the 727 can boast similar performance?

I used to love the smell of Jet-A in the morning...
User currently offlineBroke From United States of America, joined Apr 2002, 1325 posts, RR: 3
Reply 2, posted (13 years 10 months 4 days 17 hours ago) and read 1806 times:

The Eastern 727-200 accident (Flight 66) occurred in 1974 not 1978. The airplane hit the approach light stanchions and went end over end. This accident served as the catalyst in wind shear research. It also resulted in the light stanchions being made a lot lighter.
There have been several incidents in which 727 crews have attempted a take off during a period of wind shear advisories. One was a Pan Am flight out of New Orleans and the airplane went down with a loss of all. Another was a United flight out of Denver, Stapleton (This was an airport with a lot of wind shear advisories), this airplane hit the approach lights are the other end of the runway but got airborne. The plane returned to the airport because the crew could not pressurize the cabin. An approximately 4' X 5' hole in the aft lower fuselage did the trick. The F/A's in the back knew they had hit something, but the crew did not. Before you get on the crew's case about not knowing they hit something; I have read about and/or seen several 727-200's that hit something or had a heavy landing that resulted in significant damage that the crew did not realize what had happened. The airplane seems to have a lot of "spring" in it.
My personal opinion is; if there is a wind shear advisory, wait for things to clear or go somewhere else. Both crews thought they had sufficient knowledge and skills to handle the situation by continuing.

Top Of Page
Forum Index

Reply To This Topic B727-200Windshear Recovery(Decreasing Performance)
No username? Sign up now!

Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)

Similar topics:More similar topics...
Takeoff Performance Of The ERJ-170 posted Mon Apr 23 2007 20:05:11 by EA772LR
Request MD-90 Performance Information posted Sun Apr 15 2007 10:02:11 by MD11Fanatic
ATR Performance/ Handling posted Tue Apr 10 2007 21:37:58 by KingAirMan
Airliner Performance Observations posted Wed Jan 31 2007 03:37:34 by Flyf15
B727 Voltage Regulators/Generators. posted Mon Jan 29 2007 21:21:12 by AirframeAS
Dash-8-300 Performance Question posted Thu Jan 18 2007 23:44:45 by Chief727
Bombardier Q400 Field Performance: Question posted Sun Dec 3 2006 17:40:48 by A342
Cranfield. Also, Performance Opts On Private A/C posted Sat Sep 23 2006 23:09:54 by BAe146QT
High Air Temp Affecting Aircraft Performance? posted Wed Aug 2 2006 11:36:00 by Singel09
Windsheer (or Microburst) Recovery Techniques posted Tue Jul 25 2006 10:57:14 by Speedracer1407

Sponsor Message:
Printer friendly format