A B747-400 flight crew was informed that a mechanic was injured while the aircraft was parking.

Attributes
ACN	454849
Time
Date	199911
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sfo.airport
State Reference	CA
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B747-400
Operating Under FAR Part	Part 121
Flight Phase	ground other : parking
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : instrument pilot : multi engine pilot : atp
Experience	flight time last 90 days : 80 flight time total : 25000 flight time type : 200
ASRS Report	454859
Person 2
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
Events
Anomaly	ground encounters other
Independent Detector	other flight crewa other other : 3
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Problem Areas	Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

During parking at gate, using lighting for guidance and stop distance, mechanic hit by chock and injured as a result of falling and injuring his head. Aircraft speed during parking just prior to stopping was 2 KTS. Lighting guidance alignment was right on. Callback conversation with reporter revealed the following information: the reporter feels the mechanic may have placed the nosewheel chock in position prior to the aircraft stopping. The nosewheel contacted the chock causing it to fly up and struck the mechanic who fell injuring his head. The standard procedure is to place the chock in position after the aircraft has come to a stop.

Original NASA ASRS Text

Title: A B747-400 FLC WAS INFORMED THAT A MECH WAS INJURED WHILE THE ACFT WAS PARKING.

Narrative: DURING PARKING AT GATE, USING LIGHTING FOR GUIDANCE AND STOP DISTANCE, MECH HIT BY CHOCK AND INJURED AS A RESULT OF FALLING AND INJURING HIS HEAD. ACFT SPD DURING PARKING JUST PRIOR TO STOPPING WAS 2 KTS. LIGHTING GUIDANCE ALIGNMENT WAS RIGHT ON. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR FEELS THE MECH MAY HAVE PLACED THE NOSEWHEEL CHOCK IN POS PRIOR TO THE ACFT STOPPING. THE NOSEWHEEL CONTACTED THE CHOCK CAUSING IT TO FLY UP AND STRUCK THE MECH WHO FELL INJURING HIS HEAD. THE STANDARD PROC IS TO PLACE THE CHOCK IN POS AFTER THE ACFT HAS COME TO A STOP.

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.