<< >> NASA ASRS Report 445075, July 1999

An EMB120 was dispatched in non compliance with the wrong MEL reference used to defer an inoperative air-conditioning pack.

Attributes
ACN	445075
Time
Date	199907
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : llbg.tower
Operator	common carrier : air carrier
Make Model Name	Brasilia EMB-120 All Series
Operating Under FAR Part	Part 135
Flight Phase	ground : parked ground : maintenance
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 300 flight time total : 12500 flight time type : 8500
ASRS Report	445075
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : multi engine pilot : commercial
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : non compliance with mel non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : schedule pressure performance deficiency : logbook entry performance deficiency : non compliance with legal requirements performance deficiency : training
Supplementary
Problem Areas	Maintenance Human Performance Aircraft Flight Crew Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

A new mechanic in a hurry deferred an item under the wrong MEL number. I saw the item listed on my dispatch release with the correct number. When I checked the MEL book for any restrs I used the correct number from my dispatch release never looking at the deferred log. The crew coming out the next morning found the discrepancy. Factors which contributed to this event. New personnel who work under time pressures to get the aircraft back in service as soon as possible. Heat. The discrepancy item was the pack that cooled the cockpit. The cockpit temperature must have been close to 120 degrees F.

Related reports:

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Original NASA ASRS Text

Title: AN EMB120 WAS DISPATCHED IN NON COMPLIANCE WITH THE WRONG MEL REF USED TO DEFER AN INOP AIR-CONDITIONING PACK.

Narrative: A NEW MECH IN A HURRY DEFERRED AN ITEM UNDER THE WRONG MEL NUMBER. I SAW THE ITEM LISTED ON MY DISPATCH RELEASE WITH THE CORRECT NUMBER. WHEN I CHKED THE MEL BOOK FOR ANY RESTRS I USED THE CORRECT NUMBER FROM MY DISPATCH RELEASE NEVER LOOKING AT THE DEFERRED LOG. THE CREW COMING OUT THE NEXT MORNING FOUND THE DISCREPANCY. FACTORS WHICH CONTRIBUTED TO THIS EVENT. NEW PERSONNEL WHO WORK UNDER TIME PRESSURES TO GET THE ACFT BACK IN SVC ASAP. HEAT. THE DISCREPANCY ITEM WAS THE PACK THAT COOLED THE COCKPIT. THE COCKPIT TEMP MUST HAVE BEEN CLOSE TO 120 DEGS F.

Data retrieved from NASA's ASRS site as of July 2007 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.