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Old 04-04-2015 | 06:27 AM
  #183  
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Bilsch
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From: FAA ATSI VSRP ERC
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Looks like high EPR for a contaminated runway. I thought MD issued an advisory that 1.3 should be the max due to rudder blank and asymmetrical thrust possibility?

Found the reference. Looks like it was back in 1996 that MD issued the 1.3 notice after LIT accident?

https://books.google.com/books?id=CS...thrust&f=false

From the NTSB update (bold emphasis by me):

o The airplane was aligned with the runway centerline during the approach to the runway.
o The autopilot was engaged until the airplane was about 230 feet above the ground.
o The airspeed during the final approach was about 140 knots.
o The main landing gear touched down close to the runway centerline, at a speed of about 133 knots.
o Two seconds after main gear touchdown both thrust reversers were deployed and engines began advancing in power.
o The spoilers were fully deployed within 2.5 seconds after main gear touchdown.
o The nose gear touched down and brake pressure began to rise in a manner consistent with autobrake application 2.8 seconds after the main gear touchdown.
o About six seconds after main gear touchdown, the airplane’s heading began to diverge to the left. At this point, both the left and right engine EPR were about 1.9 with the reversers still deployed.
o The engines reached peak recorded reverse thrust of 2.07 EPR on the left, and 1.91 EPR on the right, between six and seven seconds after touchdown. Engine thrust decreased after this point.

o The thrust reversers were stowed nine seconds after main gear touchdown when the engines were both at about 1.6 EPR.
o The airplane departed the left side of the runway approximately 14 seconds after main gear touchdown.

http://www.ntsb.gov/news/press-relea...20150402b.aspx

Last edited by Bilsch; 04-04-2015 at 06:38 AM. Reason: Added citation for MD-80 reverser notice.
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