After suffering multiple autoflight and instrument failures the flight crew of an A320 descended out...

Narrative:

I was flying with the autopilot engaged on our way to FL340. Passing FL290 the autopilot kicked off. I tried to reengage the autopilot with no success. At that time we got an ECAM navigation adr 1 fault; autopilot off and GPWS fault. The captain instructed me to fly the airplane and talk to ATC while he ran the ECAM. After finishing the ECAM and running through the appropriate procedures; we had lost numerous systems necessary for auto flight. I now was hand flying the aircraft. The captain discussed the situation with dispatch and maintenance and after working through the appropriate procedures decided to divert. He exercised captain's emergency authority to recycle FMGC 1 and 2 circuit breaker. Despite running all appropriate procedures we were unable to return the aircraft to normal flight. We did not declare an emergency with ATC. We descended [below rvsm] and flew block altitudes to the divert airport. We also burned down our fuel in order to land under max landing weight. The landing was uneventful. After arriving at the gate; we debriefed with operations and maintenance.

Original NASA ASRS Text

Title: After suffering multiple autoflight and instrument failures the flight crew of an A320 descended out of RVSM airspace and diverted uneventfully for maintenance.

Narrative: I was flying with the autopilot engaged on our way to FL340. Passing FL290 the autopilot kicked off. I tried to reengage the autopilot with no success. At that time we got an ECAM NAV ADR 1 Fault; Autopilot Off and GPWS Fault. The Captain instructed me to fly the airplane and talk to ATC while he ran the ECAM. After finishing the ECAM and running through the appropriate procedures; we had lost numerous systems necessary for auto flight. I now was hand flying the aircraft. The Captain discussed the situation with Dispatch and Maintenance and after working through the appropriate procedures decided to divert. He exercised Captain's Emergency Authority to recycle FMGC 1 and 2 Circuit Breaker. Despite running all appropriate procedures we were unable to return the aircraft to normal flight. We did not declare an emergency with ATC. We descended [below RVSM] and flew block altitudes to the divert airport. We also burned down our fuel in order to land under max landing weight. The landing was uneventful. After arriving at the gate; we debriefed with Operations and Maintenance.

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	966335
Time
Date	201108
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	IMC
Aircraft 1
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Autoflight System
Person 1
Function	Captain Pilot Flying
Experience	Flight Crew Last 90 Days 150 Flight Crew Total 11000 Flight Crew Type 3500
Person 2
Function	Pilot Not Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 250 Flight Crew Total 19000 Flight Crew Type 8000
Events
Anomaly	Aircraft Equipment Problem Critical

After suffering multiple autoflight and instrument failures the flight crew of an A320 descended out of rvsm airspace and diverted uneventfully for maintenance.