<< >> NASA ASRS Report 758138, September 2007

At departure time; an MD80 mechanic deferred an anti-ice valve. MEL procedure not available at jetway. Mechanic relied on maintenance control for MEL procedure; but was not told of requirement to downgrade aircraft performance status.

Attributes
ACN	758138
Time
Date	200709
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	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 : technician
ASRS Report	758138
Person 2
Affiliation	company : air carrier
Function	other personnel other
Events
Anomaly	aircraft equipment problem : critical maintenance problem : non compliance with mel non adherence : far non adherence : published procedure
Independent Detector	other other : 1
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : briefing contributing factor : schedule pressure performance deficiency : logbook entry performance deficiency : non compliance with legal requirements
Supplementary
Problem Areas	Company Maintenance Human Performance Aircraft
Primary Problem	Maintenance Human Performance

Narrative:

Was called to flight at departure time for circuit breaker popped for anti-ice valve. Maintenance control notified for placard and manual procedures. Locked valve in open position as manual describes. Maintenance control service agent failed to inform me that downgrade was part of the procedure. As MEL manual is not available at jetway phone; logbook malfunction was deferred per MEL and manual procedures and flight dispatched. Maintenance control service did not relate to me all MEL procedures which were the performance downgrade pertaining to anti-ice valve inoperative. All manual procedures accomplished but was not informed of performance. MEL manual not avail at gate phone. Aircraft was past departure time.

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Original NASA ASRS Text

Title: AT DEPARTURE TIME; AN MD80 MECHANIC DEFERRED AN ANTI-ICE VALVE. MEL PROCEDURE NOT AVAILABLE AT JETWAY. MECHANIC RELIED ON MAINT CONTROL FOR MEL PROCEDURE; BUT WAS NOT TOLD OF REQUIREMENT TO DOWNGRADE ACFT PERFORMANCE STATUS.

Narrative: WAS CALLED TO FLT AT DEP TIME FOR CIRCUIT BREAKER POPPED FOR ANTI-ICE VALVE. MAINT CTL NOTIFIED FOR PLACARD AND MANUAL PROCS. LOCKED VALVE IN OPEN POS AS MANUAL DESCRIBES. MAINT CTL SVC AGENT FAILED TO INFORM ME THAT DOWNGRADE WAS PART OF THE PROC. AS MEL MANUAL IS NOT AVAILABLE AT JETWAY PHONE; LOGBOOK MALFUNCTION WAS DEFERRED PER MEL AND MANUAL PROCS AND FLT DISPATCHED. MAINT CTL SVC DID NOT RELATE TO ME ALL MEL PROCS WHICH WERE THE PERFORMANCE DOWNGRADE PERTAINING TO ANTI-ICE VALVE INOP. ALL MANUAL PROCS ACCOMPLISHED BUT WAS NOT INFORMED OF PERFORMANCE. MEL MANUAL NOT AVAIL AT GATE PHONE. ACFT WAS PAST DEP TIME.

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.