A319 captain reports erroneous first officer airspeed indications during takeoff. Once airborne airc...

Attributes
ACN	804194
Time
Date	200809
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : zzz.tower
Operator	common carrier : air carrier
Make Model Name	A319
Operating Under FAR Part	Part 121
Flight Phase	ground : takeoff roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	804194
Events
Anomaly	aircraft equipment problem : critical other anomaly
Independent Detector	aircraft equipment other aircraft equipment : ecam other flight crewa
Resolutory Action	flight crew : declared emergency flight crew : diverted to another airport flight crew : landed in emergency condition other
Consequence	faa : assigned or threatened penalties
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

On takeoff roll; first officer; PNF verbalized erroneous airspeed indications. Captain; PF continued takeoff with good airspeed indications. After lift-off; no autothrust ECAM displayed. Could not reengage. Autoplt would not engage. Both flight directors inoperative. Reactive windshear and conditioned trim air system faults displayed. Altn law: prot lost. Declared an emergency. Returned to ZZZ for visual approach. I continued flying because of reliable flight instruments. First officer contacted operations; ATC; flight attendants and passenger. Gear down; flaps 3 degrees: direct law; use manual pitch trim. Emergency equipment standing by as precaution. Taxied to gate. According to the logbook; ADR3 indicated 80 KTS at gate. Adm malfunctioned. Callback conversation with reporter revealed the following information: the reporter stated that the only knowledge he has of the repairs required to return the aircraft to service were gleaned from this aircraft's log book several days later. No air data switching occurred during the short flight and how ADR3 managed to affect the first officer's airspeed indication is unknown.

Original NASA ASRS Text

Title: A319 CAPT REPORTS ERRONEOUS FO AIRSPEED INDICATIONS DURING TKOF. ONCE AIRBORNE ACFT IS IN ALTERNATE LAW WITH OTHER ECAM WARNINGS. SAFE RETURN TO DEPARTURE ARPT ENSUES.

Narrative: ON TKOF ROLL; FO; PNF VERBALIZED ERRONEOUS AIRSPD INDICATIONS. CAPT; PF CONTINUED TKOF WITH GOOD AIRSPD INDICATIONS. AFTER LIFT-OFF; NO AUTOTHRUST ECAM DISPLAYED. COULD NOT REENGAGE. AUTOPLT WOULD NOT ENGAGE. BOTH FLT DIRECTORS INOP. REACTIVE WINDSHEAR AND CONDITIONED TRIM AIR SYS FAULTS DISPLAYED. ALTN LAW: PROT LOST. DECLARED AN EMER. RETURNED TO ZZZ FOR VISUAL APCH. I CONTINUED FLYING BECAUSE OF RELIABLE FLT INSTS. FO CONTACTED OPS; ATC; FLT ATTENDANTS AND PAX. GEAR DOWN; FLAPS 3 DEGS: DIRECT LAW; USE MANUAL PITCH TRIM. EMER EQUIP STANDING BY AS PRECAUTION. TAXIED TO GATE. ACCORDING TO THE LOGBOOK; ADR3 INDICATED 80 KTS AT GATE. ADM MALFUNCTIONED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE REPORTER STATED THAT THE ONLY KNOWLEDGE HE HAS OF THE REPAIRS REQUIRED TO RETURN THE ACFT TO SERVICE WERE GLEANED FROM THIS ACFT'S LOG BOOK SEVERAL DAYS LATER. NO AIR DATA SWITCHING OCCURRED DURING THE SHORT FLIGHT AND HOW ADR3 MANAGED TO AFFECT THE FO'S AIRSPEED INDICATION IS UNKNOWN.

Data retrieved from NASA's ASRS site as of May 2009 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.

A319 captain reports erroneous first officer airspeed indications during takeoff. Once airborne aircraft is in alternate law with other ECAM warnings. Safe return to departure airport ensues.