While on initial arrival the flight crew of an A320 suffered the loss of multiple FMGC related funct...

Narrative:

Just below 10;000 ft on descent captain's nd went to map not available; all nav data was lost. Tried to manually tune the ord VOR in mcdu 1... Wait for response was displayed..VOR on nd was useless. All speeds dropped from the FMGC. There was no ECAM or other fault message. Later there was a pressurization ECAM regarding lost landing elevation data. The approach mode would not arm on either side on final approach. The weather was clear; we made a visual approach; manually set the landing elevation and landed without incident. In bad weather it could have been serious. The weather was clear.

Original NASA ASRS Text

Title: While on initial arrival the flight crew of an A320 suffered the loss of multiple FMGC related functions including the Captain's ND; all nav data; landing performance data; and landing elevation reference. Fortunately; clear skies prevailed and an uneventful landing ensued.

Narrative: Just below 10;000 FT on descent Captain's ND went to map not available; all nav data was lost. Tried to manually tune the ORD VOR in MCDU 1... Wait for response was displayed..VOR on ND was useless. All speeds dropped from the FMGC. There was no ECAM or other fault message. Later there was a pressurization ECAM regarding lost landing elevation data. The approach mode would not arm on either side on final approach. The weather was clear; we made a visual approach; manually set the landing elevation and landed without incident. In bad weather it could have been serious. The weather was clear.

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.

Attributes
ACN	969428
Time
Date	201109
Local Time Of Day	0601-1200
Place
Locale Reference	ORD.Airport
State Reference	IL
Aircraft 1
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	Descent
Flight Plan	IFR
Component
Aircraft Component	FMS/FMC
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

While on initial arrival the flight crew of an A320 suffered the loss of multiple FMGC related functions including the captain's nd; all nav data; landing performance data; and landing elevation reference. Fortunately; clear skies prevailed and an uneventful landing ensued.