A crj-700 first officer reported cas alerts for idg 2 even though the idg 2 was deferred before depa...

Attributes
ACN	896620
Time
Date	201005
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet 700 ER/LR (CRJ700)
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Generator Drive
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Maintenance

Narrative:

The idg number 2 was deferred on [our] aircraft. During flight the cas system gave continuous amber alerts for 'idg 2.' we decided that we should call maintenance about the issue. When maintenance understood that the cas was continually indicating 'idg 2;' they advised us to disconnect the idg 2 from the engine via the disconnect switch. The cas stopped giving the 'idg 2' amber alert; and the flight continued without incident. Apparently; since the idg was deferred; it should have also been disconnected from the engine. Any time something is deferred on an aircraft; I'll be more diligent to make sure that all necessary action has been completed.

Original NASA ASRS Text

Title: A CRJ-700 First Officer reported CAS alerts for IDG 2 even though the IDG 2 was deferred before departure. Maintenance advised a disconnect; and later reporter learned it should have been disconnected as part of the deferral process.

Narrative: The IDG number 2 was deferred on [our] aircraft. During flight the CAS system gave continuous amber alerts for 'IDG 2.' We decided that we should call Maintenance about the issue. When Maintenance understood that the CAS was continually indicating 'IDG 2;' they advised us to disconnect the IDG 2 from the engine via the disconnect switch. The CAS stopped giving the 'IDG 2' amber alert; and the flight continued without incident. Apparently; since the IDG was deferred; it should have also been disconnected from the engine. Any time something is deferred on an aircraft; I'll be more diligent to make sure that all necessary action has been completed.

Data retrieved from NASA's ASRS site as of April 2012 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.

A crj-700 first officer reported cas alerts for idg 2 even though the idg 2 was deferred before departure. Maintenance advised a disconnect; and later reporter learned it should have been disconnected as part of the deferral process.