A319
Flight Crew Air Transport Pilot (ATP)
Confusion; Troubleshooting
Aircraft Equipment Problem Critical
Flight Crew Landed As Precaution; Flight Crew Returned To Departure Airport; General Maintenance Action; General Declared Emergency
Aircraft
During takeoff roll around 100 KTS I lost my airspeed indication on my Primary Flight Display (PFD). I immediately looked over to the First Officer's PFD; noticed his airspeed indication was normal; decided to continue the takeoff; and verbalized 'continuing.' I rotated when the First Officer said rotate. We raised the landing gear and around 200 FT AGL we got a master warning; master caution; and several ECAM messages with the associated CRC and chimes. We also lost our flight directors; auto thrust; and the Autopilot 2 would not engage. I transferred control to the First Officer and tried to sort through the ECAM messages using our Non-Normal Methodology. We had the following ECAM Warning Messages-AUTO FLT RUD TRV LIM SYS; AUTO FLT A/THR OFF; AUTO FLT; F/CTL ELAC 1 PITCH FAULT; F/CTL; NAV IAS discrepancy. The Maintenance post flight report recorded all of the above messages at our takeoff time. Some of the ECAM messages cleared with no action and some did not. Some ECAM messages reappeared after a few seconds and it was difficult to determine which messages were valid. The last ECAM message NAV IAS discrepancy remained and I accomplished the ECAM Action by switching the air data switch to CAPT on 3. I got back my airspeed indication and then more ECAM messages reappeared. The First Officer and I decided to declare an emergency and return. I felt that with the multiple chimes every 5-10 seconds and computer faults we could not safely continue to destination. Computer faults; maybe pitot static system faults. [I] had a rest of 9+31 (block to block) prior to this duty period. This rest includes travel time to the hotel and 1 hour reporting time and did not provide 8 hours sleep. All airlines should implement the new FAA rest rules now.
A319 Captain experiences loss of airspeed indication at 100 KTS and continues the takeoff; noting that the First Officer's indications are normal. Once airborne; many ECAM warnings associated with the loss of ADR 1 are annunciated. With the Captain's PFD using ADR 3; airspeed indication returns; but other anomalies remain and the crew elects to return to the departure airport.