B727 departure from sfb has near midair collision with C172 believed to be off parallel runway.

Attributes
ACN	602012
Time
Date	200312
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sfb.airport
State Reference	FL
Altitude	agl single value : 1100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sfb.tower
Operator	common carrier : air carrier
Make Model Name	B727-200
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Route In Use	departure sid : n/c
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : sfb.tower
Make Model Name	Skyhawk 172/Cutlass 172
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 175 flight time total : 17000 flight time type : 7000
ASRS Report	602012
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : flight engineer pilot : commercial
Experience	flight time last 90 days : 140 flight time total : 4500 flight time type : 1600
ASRS Report	602231
Events
Anomaly	conflict : airborne critical conflict : nmac other spatial deviation
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 200 vertical : 100
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance Airport
Primary Problem	Ambiguous

Narrative:

We took off on runway 27R at sfb (sanford, fl). We assume the other aircraft took off on runway 27C. We were flying runway heading to 5000 ft. The light aircraft was on the extended centerline of runway 27R. We performed an immediate left turn and stopped climbing. I was flying and the first officer called my attention to the traffic, then we got the TCASII TA/RA. Supplemental information from acn 602231: while passing through 1000 ft on our altimeters I noticed the C172 slightly below us and directly in front of us. I immediately brought it to the captain's attention and he executed a left turn without hesitation. We then received the TCASII TA/RA. Since the C172 was moving in the same direction as us (west) and appeared to be climbing, it may be fair to assume that they took off from runway 27C and drifted right (north) to the runway 27R centerline.

Original NASA ASRS Text

Title: B727 DEP FROM SFB HAS NMAC WITH C172 BELIEVED TO BE OFF PARALLEL RWY.

Narrative: WE TOOK OFF ON RWY 27R AT SFB (SANFORD, FL). WE ASSUME THE OTHER ACFT TOOK OFF ON RWY 27C. WE WERE FLYING RWY HEADING TO 5000 FT. THE LIGHT ACFT WAS ON THE EXTENDED CTRLINE OF RWY 27R. WE PERFORMED AN IMMEDIATE L TURN AND STOPPED CLBING. I WAS FLYING AND THE FO CALLED MY ATTN TO THE TFC, THEN WE GOT THE TCASII TA/RA. SUPPLEMENTAL INFO FROM ACN 602231: WHILE PASSING THROUGH 1000 FT ON OUR ALTIMETERS I NOTICED THE C172 SLIGHTLY BELOW US AND DIRECTLY IN FRONT OF US. I IMMEDIATELY BROUGHT IT TO THE CAPT'S ATTN AND HE EXECUTED A L TURN WITHOUT HESITATION. WE THEN RECEIVED THE TCASII TA/RA. SINCE THE C172 WAS MOVING IN THE SAME DIRECTION AS US (W) AND APPEARED TO BE CLBING, IT MAY BE FAIR TO ASSUME THAT THEY TOOK OFF FROM RWY 27C AND DRIFTED R (N) TO THE RWY 27R CTRLINE.

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.