B717 crew experiences a dual mcdu lockout shortly after takeoff which cannot be corrected. The fligh...

Attributes
ACN	1120735
Time
Date	201308
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	B717 (Formerly MD-95)
Operating Under FAR Part	Part 121
Flight Phase	Climb
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	FMS/FMC
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 60 Flight Crew Total 22000 Flight Crew Type 7000
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

Shortly after takeoff both mcdu's locked out. We lost all navigation ability. The course line on the map display disappeared; we could not select standby nav; manually tune any frequencies; the autopilot would not engage and the FMS would not compute the proper airspeeds. We checked the QRH and aom for guidance and realized we could not correct the problem. After checking the weather we declared an emergency and diverted because the weather there was VFR. Landed without incident. Maintenance corrected the issue and we continued to destination.

Original NASA ASRS Text

Title: B717 crew experiences a dual MCDU lockout shortly after takeoff which cannot be corrected. The flight diverts to a suitable airport for maintenance; then continues to destination.

Narrative: Shortly after takeoff both MCDU's locked out. We lost all navigation ability. The course line on the map display disappeared; we could not select standby Nav; manually tune any frequencies; the autopilot would not engage and the FMS would not compute the proper airspeeds. We checked the QRH and AOM for guidance and realized we could not correct the problem. After checking the weather we declared an emergency and diverted because the weather there was VFR. Landed without incident. Maintenance corrected the issue and we continued to destination.

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.

B717 crew experiences a dual mcdu lockout shortly after takeoff which cannot be corrected. The flight diverts to a suitable airport for maintenance; then continues to destination.