A B737-700 engine driven pump harness had a connector replaced. Later investigation by reporter found entire harness should have been replaced per the maintenance manual. Also discovered standard wiring practices manual in conflict with maintenance manual on harness repair.

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Attributes
ACN	700526
Time
Date	200606
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Controlling Facilities	tower : mdt.tower
Operator	common carrier : air carrier
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	ground : parked ground : maintenance
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	maintenance : lead technician
Experience	maintenance lead technician : 7 maintenance technician : 30
ASRS Report	700526
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far
Independent Detector	other other : 1
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : manuals contributing factor : schedule pressure performance deficiency : installation performance deficiency : non compliance with legal requirements performance deficiency : repair
Supplementary
Problem Areas	Maintenance Human Performance Aircraft Chart Or Publication
Primary Problem	Maintenance Human Performance

Narrative:

Replaced D1204 connector on wire harness. After further investigation it was determined by myself that wire harness M & east should have been replaced not repaired per amm task. Comments: the standard wiring practices manual does not state that this harness cannot be repaired by replacing any cannon plugs.

Original NASA ASRS Text

Title: A B737-700 ENG DRIVEN PUMP HARNESS HAD A CONNECTOR REPLACED. LATER INVESTIGATION BY RPTR FOUND ENTIRE HARNESS SHOULD HAVE BEEN REPLACED PER THE MAINT MANUAL. ALSO DISCOVERED STANDARD WIRING PRACTICES MANUAL IN CONFLICT WITH MAINT MANUAL ON HARNESS REPAIR.

Narrative: REPLACED D1204 CONNECTOR ON WIRE HARNESS. AFTER FURTHER INVESTIGATION IT WAS DETERMINED BY MYSELF THAT WIRE HARNESS M & E SHOULD HAVE BEEN REPLACED NOT REPAIRED PER AMM TASK. COMMENTS: THE STANDARD WIRING PRACTICES MANUAL DOES NOT STATE THAT THIS HARNESS CANNOT BE REPAIRED BY REPLACING ANY CANNON PLUGS.

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.