B737 departing oak bird strike at rotation and returns to field.

Attributes
ACN	711183
Time
Date	200609
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : oak.airport
State Reference	CA
Altitude	msl single value : 10
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tower : oak.tower
Operator	common carrier : air carrier
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 170 flight time total : 20500 flight time type : 17000
ASRS Report	711183
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical inflight encounter : birds other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : landed as precaution
Supplementary
Problem Areas	Aircraft Environmental Factor
Primary Problem	Environmental Factor

Narrative:

Bird strike on rotation runway 29 oak. Immediately got stick shaker and indicated airspeed disagreement warnings. First officer's airspeed was 60 KTS less than the captain and standby indicators. During vectors for a downwind return to oak both eec's went to 'alternate mode.' we then experienced a loss of FMC on the first officer's side. Completed all checklists and made a return landing at oak runway 29. Postflt inspection revealed the bird hit the upper pitot tube on the first officer's side.

Original NASA ASRS Text

Title: B737 DEPARTING OAK BIRD STRIKE AT ROTATION AND RETURNS TO FIELD.

Narrative: BIRD STRIKE ON ROTATION RWY 29 OAK. IMMEDIATELY GOT STICK SHAKER AND INDICATED AIRSPD DISAGREEMENT WARNINGS. FO'S AIRSPD WAS 60 KTS LESS THAN THE CAPT AND STANDBY INDICATORS. DURING VECTORS FOR A DOWNWIND RETURN TO OAK BOTH EEC'S WENT TO 'ALTERNATE MODE.' WE THEN EXPERIENCED A LOSS OF FMC ON THE FO'S SIDE. COMPLETED ALL CHKLISTS AND MADE A RETURN LNDG AT OAK RWY 29. POSTFLT INSPECTION REVEALED THE BIRD HIT THE UPPER PITOT TUBE ON THE FO'S SIDE.

Data retrieved from NASA's ASRS site as of January 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.