An A320 had an incorrect oxygen bottle installed by a contract technician. Part was ordered by the carrier's maintenance controller. Local carrier agents dispatched aircraft with no technician signoff and no logbook report.

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Attributes
ACN	708088
Time
Date	200608
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance ground : parked
Flight Plan	IFR
Person 1
Affiliation	other
Function	maintenance : technician
ASRS Report	7080880762
Person 2
Affiliation	company : air carrier
Function	oversight : coordinator
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : published procedure
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : schedule pressure performance deficiency : non compliance with legal requirements performance deficiency : logbook entry performance deficiency : installation
Supplementary
Problem Areas	Maintenance Human Performance Aircraft Chart Or Publication Company Flight Crew Human Performance
Primary Problem	Company

Narrative:

Possible incorrect part number. Air carrier maintenance control advised wrong part used. Air carrier management was advised of improper or operational difficulties. Contract maintenance has to wait for access to the aircraft -- no key to jetbridge. Air carrier local agents closed the door and dispatched the aircraft without clearing with the mechanic; and the captain did not write an item.

Original NASA ASRS Text

Title: AN A320 HAD AN INCORRECT OXYGEN BOTTLE INSTALLED BY A CONTRACT TECHNICIAN. PART WAS ORDERED BY THE CARRIER'S MAINT CTLR. LCL CARRIER AGENTS DISPATCHED ACFT WITH NO TECHNICIAN SIGNOFF AND NO LOGBOOK RPT.

Narrative: POSSIBLE INCORRECT PART NUMBER. ACR MAINT CTL ADVISED WRONG PART USED. ACR MGMNT WAS ADVISED OF IMPROPER OR OPERATIONAL DIFFICULTIES. CONTRACT MAINT HAS TO WAIT FOR ACCESS TO THE ACFT -- NO KEY TO JETBRIDGE. ACR LCL AGENTS CLOSED THE DOOR AND DISPATCHED THE ACFT WITHOUT CLRING WITH THE MECH; AND THE CAPT DID NOT WRITE AN ITEM.

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.