<< >> NASA ASRS Report 557671, August 2002

Air carrier pilot complains that B757 and larger at ord receive more delays of 10 mins or more than other flts because they cause wake turbulence.

Attributes
ACN	557671
Time
Date	200208
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	agl single value : 0
Environment
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : holding
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
ASRS Report	557671
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	inflight encounter : wake turbulence other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Airspace Structure ATC Human Performance Aircraft Flight Crew Human Performance Weather Airport
Primary Problem	Ambiguous

Narrative:

Location: runway 32L intersection hold short, taxi pretkof. Twice in as many weeks, we have experienced a 10 min or longer delay awaiting takeoff due to airport landing/departing confign. The situation at ord seems to happen when landing runway 4 and runway 9 while departing off of runway 32L. In this situation, all aircraft B757 and larger are delayed waiting for a large gap between runway 9L arrs so that our wake does not affect them. This problem appears to have gotten worse this month. When ord is expecting a high amount of arrs, seems like it would make more sense to send B757 and larger aircraft off of runway 32R, runway 4L or runway 9L so that we are not delayed as long waiting for the gap in landing traffic. I'm assuming the gap would not have to be as big if we are lifting off somewhere other than in the arrival's flare zone.

Related reports:

• Commuter aircraft complains of wake turbulence following jet...
• Captain of a B757 complains about the simultaneous visual ap...
• An arriving B727 PIC complains of the temporary loss of airc...
• An air carrier flight crew, in turbulence, is told by the ap...
• A BE35 pilot complains while he was flying in thunderstorms ...
• A B737 flight crew complains of the lack of mmid ARTCC intra...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: ACR PLT COMPLAINS THAT B757 AND LARGER AT ORD RECEIVE MORE DELAYS OF 10 MINS OR MORE THAN OTHER FLTS BECAUSE THEY CAUSE WAKE TURB.

Narrative: LOCATION: RWY 32L INTXN HOLD SHORT, TAXI PRETKOF. TWICE IN AS MANY WKS, WE HAVE EXPERIENCED A 10 MIN OR LONGER DELAY AWAITING TKOF DUE TO ARPT LNDG/DEPARTING CONFIGN. THE SIT AT ORD SEEMS TO HAPPEN WHEN LNDG RWY 4 AND RWY 9 WHILE DEPARTING OFF OF RWY 32L. IN THIS SIT, ALL ACFT B757 AND LARGER ARE DELAYED WAITING FOR A LARGE GAP BTWN RWY 9L ARRS SO THAT OUR WAKE DOES NOT AFFECT THEM. THIS PROB APPEARS TO HAVE GOTTEN WORSE THIS MONTH. WHEN ORD IS EXPECTING A HIGH AMOUNT OF ARRS, SEEMS LIKE IT WOULD MAKE MORE SENSE TO SEND B757 AND LARGER ACFT OFF OF RWY 32R, RWY 4L OR RWY 9L SO THAT WE ARE NOT DELAYED AS LONG WAITING FOR THE GAP IN LNDG TFC. I'M ASSUMING THE GAP WOULD NOT HAVE TO BE AS BIG IF WE ARE LIFTING OFF SOMEWHERE OTHER THAN IN THE ARR'S FLARE ZONE.

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.