<< >> NASA ASRS Report 779007, March 2008

CRJ200 crew climbing out of ZZZ received a thrust reverser unlock EICAS message for a thrust reverser that was already deferred.

Attributes
ACN	779007
Time
Date	200803
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	common carrier : air carrier
Make Model Name	Regional Jet 200 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	climbout : vacating altitude ground : maintenance
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 260 flight time type : 900
ASRS Report	779007
Events
Anomaly	non adherence : published procedure
Independent Detector	aircraft equipment other aircraft equipment : eicas
Resolutory Action	flight crew : declared emergency flight crew : diverted to another airport
Consequence	other
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

On climb out from ZZZ; we received a thrust reverser unlock EICAS message. We followed the QRH and declared an emergency. After we were on approach; we realized that the thrust reverser was already deferred. Having already declared an emergency; we didn't think it was prudent to 'un-declare' an emergency; so we continued and landed back at ZZZ. We discussed the MEL in the release brief; but neither one of us had gotten an EICAS message with a deferred thrust reverser before. Maintenance came out and said everything was normal so fueled up and completed the flight without incident.

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Original NASA ASRS Text

Title: CRJ200 CREW CLIMBING OUT OF ZZZ RECEIVED A THRUST REVERSER UNLOCK EICAS MESSAGE FOR A THRUST REVERSER THAT WAS ALREADY DEFERRED.

Narrative: ON CLBOUT FROM ZZZ; WE RECEIVED A THRUST REVERSER UNLOCK EICAS MESSAGE. WE FOLLOWED THE QRH AND DECLARED AN EMER. AFTER WE WERE ON APCH; WE REALIZED THAT THE THRUST REVERSER WAS ALREADY DEFERRED. HAVING ALREADY DECLARED AN EMER; WE DIDN'T THINK IT WAS PRUDENT TO 'UN-DECLARE' AN EMER; SO WE CONTINUED AND LANDED BACK AT ZZZ. WE DISCUSSED THE MEL IN THE RELEASE BRIEF; BUT NEITHER ONE OF US HAD GOTTEN AN EICAS MESSAGE WITH A DEFERRED THRUST REVERSER BEFORE. MAINT CAME OUT AND SAID EVERYTHING WAS NORMAL SO FUELED UP AND COMPLETED THE FLT WITHOUT INCIDENT.

Data retrieved from NASA's ASRS site as of May 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.