Flight crew of B757 on takeoff at sjc has near midair collision with C172 on takeoff parallel runway...

Attributes
ACN	411498
Time
Date	199808
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sjc
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 300
Aircraft 1
Controlling Facilities	tower : sjc tower : ege
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : takeoff climbout : initial
Route In Use	departure other departure sid : sid
Flight Plan	IFR
Aircraft 2
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff climbout : initial
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	411498
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 300 vertical : 300
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Operational Deviation

Narrative:

ATC facility: sjc tower. Location: runway 30L. We were cleared for takeoff on runway 30L and a C172 was doing touch and goes on runway 30R at sjc. Watching the C172 as we gained speed to rotate and then again after rotation we came within 500 ft and possibly within 300 ft horizontal and within 0-300 ft vertical as we climbed out. The C172 approximately abeam our right wing, then turned right as we climbed through his altitude. We called the tower after climb out to ask what the separation of the runways was and the answer was 700 ft. This does not include wing span distance which was approximately less than 630 ft to start the takeoff roll. The C172 drifted left of centerline into our flight path and within approximately 300 ft. Sjc tower was informed that a NASA report would be filed on the incident. Ftw dispatch was notified via ACARS and lga chief pilot on duty was called once we landed. Sjc tower supervisor was given the information via telephone after we landed. No evasive action was needed to avoid this C172.

Original NASA ASRS Text

Title: FLC OF B757 ON TKOF AT SJC HAS NMAC WITH C172 ON TKOF PARALLEL RWY.

Narrative: ATC FACILITY: SJC TWR. LOCATION: RWY 30L. WE WERE CLRED FOR TKOF ON RWY 30L AND A C172 WAS DOING TOUCH AND GOES ON RWY 30R AT SJC. WATCHING THE C172 AS WE GAINED SPD TO ROTATE AND THEN AGAIN AFTER ROTATION WE CAME WITHIN 500 FT AND POSSIBLY WITHIN 300 FT HORIZ AND WITHIN 0-300 FT VERT AS WE CLBED OUT. THE C172 APPROX ABEAM OUR R WING, THEN TURNED R AS WE CLBED THROUGH HIS ALT. WE CALLED THE TWR AFTER CLBOUT TO ASK WHAT THE SEPARATION OF THE RWYS WAS AND THE ANSWER WAS 700 FT. THIS DOES NOT INCLUDE WING SPAN DISTANCE WHICH WAS APPROX LESS THAN 630 FT TO START THE TKOF ROLL. THE C172 DRIFTED L OF CTRLINE INTO OUR FLT PATH AND WITHIN APPROX 300 FT. SJC TWR WAS INFORMED THAT A NASA RPT WOULD BE FILED ON THE INCIDENT. FTW DISPATCH WAS NOTIFIED VIA ACARS AND LGA CHIEF PLT ON DUTY WAS CALLED ONCE WE LANDED. SJC TWR SUPVR WAS GIVEN THE INFO VIA TELEPHONE AFTER WE LANDED. NO EVASIVE ACTION WAS NEEDED TO AVOID THIS C172.

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.