An aircraft engine mechanic describes the consequence of failing to follow the correct procedure of an engine wash. The variable stator vane (vsv) feedback cable was damaged.

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Attributes
ACN	774479
Time
Date	200702
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
ASRS Report	774479
Events
Anomaly	maintenance problem : improper maintenance non adherence : published procedure
Independent Detector	other other : 1
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : weather performance deficiency : scheduled maintenance
Supplementary
Problem Areas	Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

By failing to follow correct procedure of engine wash; vsv feedback cable was damaged. By following correct procedure; the feedback cable would have been disconnected and not damaged during cold WX engine wash. Damaged cable due to not following procedure for engine wash in test cell in cold WX conditions.

Original NASA ASRS Text

Title: AN ACFT ENGINE MECHANIC DESCRIBES THE CONSEQUENCE OF FAILING TO FOLLOW THE CORRECT PROCEDURE OF AN ENGINE WASH. THE VARIABLE STATOR VANE (VSV) FEEDBACK CABLE WAS DAMAGED.

Narrative: BY FAILING TO FOLLOW CORRECT PROC OF ENG WASH; VSV FEEDBACK CABLE WAS DAMAGED. BY FOLLOWING CORRECT PROC; THE FEEDBACK CABLE WOULD HAVE BEEN DISCONNECTED AND NOT DAMAGED DURING COLD WX ENG WASH. DAMAGED CABLE DUE TO NOT FOLLOWING PROC FOR ENG WASH IN TEST CELL IN COLD WX CONDITIONS.

Data retrieved from NASA's ASRS site as of January 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.