<< >> NASA ASRS Report 666341, July 2005

An MD80 right engine anti-ice valve was reported inoperative. The left engine was inadvertently deferred as inoperative per the MEL.

Attributes
ACN	666341
Time
Date	200507
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance
Person 1
Affiliation	company : air carrier
Function	maintenance : lead technician
ASRS Report	666341
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
ASRS Report	666339
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance maintenance problem : non compliance with mel 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 : fault isolation performance deficiency : inspection performance deficiency : non compliance with legal requirements performance deficiency : logbook entry
Supplementary
Problem Areas	Chart Or Publication Maintenance Human Performance Aircraft Environmental Factor
Primary Problem	Maintenance Human Performance

Narrative:

The actual pilot report was written on the right engine anti-ice valve. We elected to defer the engine anti-ice valve per the MEL. In our haste; we worked on the left engine anti-ice valve by mistake. The error was not realized until the aircraft had departed. At that time I contacted MD80 maintenance control to inform them of the situation. I have reviewed the maintenance logbook and the gpm on proper MEL procedures. I contacted the MD80 maintenance control desk for a follow-up on the overnight maintenance for aircraft to correct the problem. Contributing factors: it was a hot day; the APU was loud; the mechanics were trying to avoid a maintenance delay.

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Original NASA ASRS Text

Title: AN MD80 R ENG ANTI-ICE VALVE WAS RPTED INOP. THE L ENG WAS INADVERTENTLY DEFERRED AS INOP PER THE MEL.

Narrative: THE ACTUAL PLT RPT WAS WRITTEN ON THE R ENG ANTI-ICE VALVE. WE ELECTED TO DEFER THE ENG ANTI-ICE VALVE PER THE MEL. IN OUR HASTE; WE WORKED ON THE L ENG ANTI-ICE VALVE BY MISTAKE. THE ERROR WAS NOT REALIZED UNTIL THE ACFT HAD DEPARTED. AT THAT TIME I CONTACTED MD80 MAINT CTL TO INFORM THEM OF THE SIT. I HAVE REVIEWED THE MAINT LOGBOOK AND THE GPM ON PROPER MEL PROCS. I CONTACTED THE MD80 MAINT CTL DESK FOR A FOLLOW-UP ON THE OVERNIGHT MAINT FOR ACFT TO CORRECT THE PROB. CONTRIBUTING FACTORS: IT WAS A HOT DAY; THE APU WAS LOUD; THE MECHS WERE TRYING TO AVOID A MAINT DELAY.

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.