An air carrier freighter dc-9 was disabled when its push back tug collapsed the nose gear.

Attributes
ACN	263328
Time
Date	199402
Day	Tue
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : ord
State Reference	IL
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zbw
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : parked other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 2750 flight time type : 200
ASRS Report	263328
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial
Experience	flight time last 90 days : 150 flight time total : 10600 flight time type : 150
ASRS Report	262946
Events
Anomaly	aircraft equipment problem : critical conflict : ground critical non adherence : published procedure other anomaly other
Independent Detector	other flight crewa other other : unspecified
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Air Traffic Incident	other

Narrative:

Prior to pushback, while the brakes were set and checks in, a ground tug attempted to hook up to our medium large transport freighter aircraft. During this attempt to hook up, the tow bar impacted the nose gear assembly with sufficient force to collapse the nose gear. The crew effected a shutdown of the aircraft and evacuated. There were no injuries. Supplemental information from acn 262946: ramp was covered in frozen snow/ice. Tug driver was trying to hook up by himself. Extensive damage to nose gear doors. Contributing factors would include: only one person hooking up tug to towbar. Ramp conditions -- icy. General WX -- negative 5 degrees F. Tug driver had just completed another very difficult pushback and may have been upset/careless.

Original NASA ASRS Text

Title: AN ACR FREIGHTER DC-9 WAS DISABLED WHEN ITS PUSH BACK TUG COLLAPSED THE NOSE GEAR.

Narrative: PRIOR TO PUSHBACK, WHILE THE BRAKES WERE SET AND CHKS IN, A GROUND TUG ATTEMPTED TO HOOK UP TO OUR MLG FREIGHTER ACFT. DURING THIS ATTEMPT TO HOOK UP, THE TOW BAR IMPACTED THE NOSE GEAR ASSEMBLY WITH SUFFICIENT FORCE TO COLLAPSE THE NOSE GEAR. THE CREW EFFECTED A SHUTDOWN OF THE ACFT AND EVACUATED. THERE WERE NO INJURIES. SUPPLEMENTAL INFO FROM ACN 262946: RAMP WAS COVERED IN FROZEN SNOW/ICE. TUG DRIVER WAS TRYING TO HOOK UP BY HIMSELF. EXTENSIVE DAMAGE TO NOSE GEAR DOORS. CONTRIBUTING FACTORS WOULD INCLUDE: ONLY ONE PERSON HOOKING UP TUG TO TOWBAR. RAMP CONDITIONS -- ICY. GENERAL WX -- NEGATIVE 5 DEGS F. TUG DRIVER HAD JUST COMPLETED ANOTHER VERY DIFFICULT PUSHBACK AND MAY HAVE BEEN UPSET/CARELESS.

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.