During a B737 pushback, a taxiing B777's wing passes over the wing of the B737.

Attributes
ACN	534993
Time
Date	200112
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	ground : pushback
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : ord.tower
Operator	common carrier : air carrier
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other other
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	534993
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	conflict : ground critical non adherence : company policies non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Supplementary
Problem Areas	Company Flight Crew Human Performance Maintenance Human Performance
Primary Problem	Ambiguous

Narrative:

While pushing back from gate at ord, we noticed a B777 taxiing east on taxiway B. As he passed by us after we had completed our pushback (with brakes set) we observed the right wing of the B777 passing over our left wing. I would estimate the overlap at about 2-5 ft horizontally. Perhaps refiguring the geometry of the pushback clrncs, given the wing span of the B777 would be useful.

Original NASA ASRS Text

Title: DURING A B737 PUSHBACK, A TAXIING B777'S WING PASSES OVER THE WING OF THE B737.

Narrative: WHILE PUSHING BACK FROM GATE AT ORD, WE NOTICED A B777 TAXIING E ON TXWY B. AS HE PASSED BY US AFTER WE HAD COMPLETED OUR PUSHBACK (WITH BRAKES SET) WE OBSERVED THE R WING OF THE B777 PASSING OVER OUR L WING. I WOULD ESTIMATE THE OVERLAP AT ABOUT 2-5 FT HORIZLY. PERHAPS REFIGURING THE GEOMETRY OF THE PUSHBACK CLRNCS, GIVEN THE WING SPAN OF THE B777 WOULD BE USEFUL.

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.