MD83 first officer experiences an IRU fault during cruise which is corrected using QRH procedures. F...

Narrative:

During cruise we experienced a fault with the #2 IRU. Performed the procedures outlined in the QRH checklist and the problem was corrected. Approximately 15 minutes later; the copilots pfd and nd lost attitude; heading; map; etc information. The flight directors on both sides were lost and the autopilot also failed. The captain's side map display also failed. I checked the standby compass and confirmed the captain's heading information appeared correct. He continued to hand fly using the VOR. We declared an emergency and relayed the status of our flight information display and navigation capability to ATC. We were given vectors and flew a visual approach to an otherwise uneventful landing.

Original NASA ASRS Text

Title: MD83 First Officer experiences an IRU fault during cruise which is corrected using QRH procedures. Fifteen minutes later the IRU fails completely. An emergency is declared and the flight continues to destination uneventfully.

Narrative: During cruise we experienced a fault with the #2 IRU. Performed the procedures outlined in the QRH checklist and the problem was corrected. Approximately 15 minutes later; the copilots PFD and ND lost attitude; heading; map; etc information. The flight directors on both sides were lost and the autopilot also failed. The Captain's side Map display also failed. I checked the standby compass and confirmed the Captain's heading information appeared correct. He continued to hand fly using the VOR. We declared an emergency and relayed the status of our flight information display and navigation capability to ATC. We were given vectors and flew a visual approach to an otherwise uneventful landing.

Data retrieved from NASA's ASRS site as of July 2013 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.

Attributes
ACN	992309
Time
Date	201202
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	MD-83
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	INS / IRS / IRU
Person 1
Function	First Officer Pilot Not Flying
Events
Anomaly	Aircraft Equipment Problem Critical

MD83 first officer experiences an IRU fault during cruise which is corrected using QRH procedures. Fifteen minutes later the IRU fails completely. An emergency is declared and the flight continues to destination uneventfully.