<< >> NASA ASRS Report 792654, June 2008

Mechanic reports while jacking the right strut of a B737-300; in order to change the #3 and #4 tires; the aircraft slipped off the jack; causing the jack to damage the strut metering valve cap.

Attributes
ACN	792654
Time
Date	200806
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : airframe technician : powerplant
ASRS Report	792654
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure non adherence : far
Independent Detector	other other : 1
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	performance deficiency : training performance deficiency : scheduled maintenance
Supplementary
Problem Areas	Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

While jacking the right strut in order to change #3 and #4 tires; the aircraft slipped off the jack; causing jack to damage the strut motoring valve cap. I had placed the jack on the strut jack pad. The aircraft brakes were released before the jacking started.

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Original NASA ASRS Text

Title: MECHANIC REPORTS WHILE JACKING THE RIGHT STRUT OF A B737-300; IN ORDER TO CHANGE THE #3 AND #4 TIRES; THE ACFT SLIPPED OFF THE JACK; CAUSING THE JACK TO DAMAGE THE STRUT METERING VALVE CAP.

Narrative: WHILE JACKING THE R STRUT IN ORDER TO CHANGE #3 AND #4 TIRES; THE ACFT SLIPPED OFF THE JACK; CAUSING JACK TO DAMAGE THE STRUT MOTORING VALVE CAP. I HAD PLACED THE JACK ON THE STRUT JACK PAD. THE ACFT BRAKES WERE RELEASED BEFORE THE JACKING STARTED.

Data retrieved from NASA's ASRS site as of May 2009 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.