<< >> NASA ASRS Report 469200, April 2000

With anti-ice system required to be used, air carrier crews operating the MD80 have difficulty meeting crossing restr near ord.

Attributes
ACN	469200
Time
Date	200004
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	msl bound lower : 24000 msl bound upper : 24800
Environment
Flight Conditions	IMC
Weather Elements	Ice
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zau.artcc
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	descent : intermediate altitude
Route In Use	arrival other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 14000 flight time type : 5000
ASRS Report	469200
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Experience	flight time last 90 days : 210 flight time total : 8000 flight time type : 1100
ASRS Report	469505
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : crossing restriction not met altitude deviation : undershoot inflight encounter : weather inflight encounter other non adherence : clearance
Independent Detector	other controllerb other flight crewa
Resolutory Action	controller : issued new clearance none taken : unable
Supplementary
Problem Areas	Weather Aircraft Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Chicago ARTCC gave us a crossing restr 'cross 90 mi southwest of ord at FL240.' we had anti-ice on and could not bring the power all the way back and still heat the wings. We brought the power back as far as we could and still have anti-ice working and pulled the speed brake. We missed the crossing by approximately 800 ft. This is a constant problem with the MD80. We should have called ATC and requested relief from this restr.

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Original NASA ASRS Text

Title: WITH ANTI-ICE SYS REQUIRED TO BE USED, ACR CREWS OPERATING THE MD80 HAVE DIFFICULTY MEETING XING RESTR NEAR ORD.

Narrative: CHICAGO ARTCC GAVE US A XING RESTR 'CROSS 90 MI SW OF ORD AT FL240.' WE HAD ANTI-ICE ON AND COULD NOT BRING THE PWR ALL THE WAY BACK AND STILL HEAT THE WINGS. WE BROUGHT THE PWR BACK AS FAR AS WE COULD AND STILL HAVE ANTI-ICE WORKING AND PULLED THE SPD BRAKE. WE MISSED THE XING BY APPROX 800 FT. THIS IS A CONSTANT PROB WITH THE MD80. WE SHOULD HAVE CALLED ATC AND REQUESTED RELIEF FROM THIS RESTR.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.