EMB145 flight crew accepts and flies an aircraft with an open non-flyable MEL.

Attributes
ACN	701526
Time
Date	200606
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dfw.airport
State Reference	TX
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	EMB ERJ 145 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	ground : preflight
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
ASRS Report	701526
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	maintenance problem : improper documentation non adherence : company policies non adherence : far non adherence : published procedure
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Consequence	other other
Supplementary
Problem Areas	Flight Crew Human Performance Maintenance Human Performance Aircraft
Primary Problem	Flight Crew Human Performance

Narrative:

Reviewed maintenance log prior to flight. Prior write-up (MEL 34-45) was entered on jun/sun/06 for FMS #2. New write-up (MEL 34-46) for FMS #1. Accepted aircraft for flight. Upon review of aml at destination; discovered that MEL 34-45 should have been cleared from aml before leaving. Called contract maintenance to remove MEL from logbook. MEL 34-46 was governing because both FMS units were inoperative and the aircraft should not have been dispatched with both write-ups. MEL 34-45 only applies when 1 FMS unit is inoperative. Reviewed MEL with captain and line check airman sitting in jumpseat. Also discussed issue with moc and dispatch over the telephone before deciding to call contract maintenance to clear the MEL.

Original NASA ASRS Text

Title: EMB145 FLT CREW ACCEPTS AND FLIES AN ACFT WITH AN OPEN NON-FLYABLE MEL.

Narrative: REVIEWED MAINT LOG PRIOR TO FLT. PRIOR WRITE-UP (MEL 34-45) WAS ENTERED ON JUN/SUN/06 FOR FMS #2. NEW WRITE-UP (MEL 34-46) FOR FMS #1. ACCEPTED ACFT FOR FLT. UPON REVIEW OF AML AT DEST; DISCOVERED THAT MEL 34-45 SHOULD HAVE BEEN CLRED FROM AML BEFORE LEAVING. CALLED CONTRACT MAINT TO REMOVE MEL FROM LOGBOOK. MEL 34-46 WAS GOVERNING BECAUSE BOTH FMS UNITS WERE INOP AND THE ACFT SHOULD NOT HAVE BEEN DISPATCHED WITH BOTH WRITE-UPS. MEL 34-45 ONLY APPLIES WHEN 1 FMS UNIT IS INOP. REVIEWED MEL WITH CAPT AND LINE CHK AIRMAN SITTING IN JUMPSEAT. ALSO DISCUSSED ISSUE WITH MOC AND DISPATCH OVER THE TELEPHONE BEFORE DECIDING TO CALL CONTRACT MAINT TO CLR THE MEL.

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.