A B777 being guided to a gate with wing walkers struck a stair truck incurring damage to #2 engine.

Attributes
ACN	503359
Time
Date	200103
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : powerplant technician : airframe
ASRS Report	503359
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : powerplant technician : airframe
ASRS Report	503360
Events
Anomaly	aircraft equipment problem : critical ground encounters : vehicle non adherence : company policies non adherence : published procedure other anomaly other
Independent Detector	other other : person 1
Resolutory Action	none taken : detected after the fact
Consequence	other other other
Supplementary
Problem Areas	Maintenance Human Performance Company Airport Aircraft
Primary Problem	Maintenance Human Performance

Narrative:

Aircraft xyz hit an airstair truck with #2 engine while repositioning aircraft. I was the ground guide man.

Original NASA ASRS Text

Title: A B777 BEING GUIDED TO A GATE WITH WING WALKERS STRUCK A STAIR TRUCK INCURRING DAMAGE TO #2 ENG.

Narrative: ACFT XYZ HIT AN AIRSTAIR TRUCK WITH #2 ENG WHILE REPOSITIONING ACFT. I WAS THE GND GUIDE MAN.

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.