An airbus 319 just after V1 till 4000 ft in climb lost #1 and #3 inertial reference units and captain's flight director, autoplts. Returned to the field.

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Attributes
ACN	543225
Time
Date	200204
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 4000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : zzz.tracon
Operator	common carrier : air carrier
Make Model Name	A319
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : initial climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : multi engine
Experience	flight time last 90 days : 110 flight time total : 17000 flight time type : 150
ASRS Report	543225
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : iru warning light other flight crewa other flight crewb
Resolutory Action	flight crew : diverted to another airport
Consequence	other
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

Just after V1 on takeoff, inertial reference unit #1 and inertial reference unit #3 failed. Captain's primary flight display, navigation display, attitude, heading and map were lost. Autothrust failed, autoplts were both inoperative. Manual trim only. Returned to field in VMC and landed uneventfully.

Original NASA ASRS Text

Title: AN AIRBUS 319 JUST AFTER V1 TILL 4000 FT IN CLB LOST #1 AND #3 INERTIAL REF UNITS AND CAPT'S FLT DIRECTOR, AUTOPLTS. RETURNED TO THE FIELD.

Narrative: JUST AFTER V1 ON TKOF, INERTIAL REF UNIT #1 AND INERTIAL REF UNIT #3 FAILED. CAPT'S PRIMARY FLT DISPLAY, NAV DISPLAY, ATTITUDE, HDG AND MAP WERE LOST. AUTOTHRUST FAILED, AUTOPLTS WERE BOTH INOP. MANUAL TRIM ONLY. RETURNED TO FIELD IN VMC AND LANDED UNEVENTFULLY.

Data retrieved from NASA's ASRS site as of July 2007 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.