BE20 is directed to pass behind B747 departing wbound off sfo at direction of N90, which causes a TC...

Attributes
ACN	510780
Time
Date	200105
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sfo.airport
State Reference	CA
Altitude	msl single value : 35000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air taxi
Make Model Name	Super King Air 200 HDC
Flight Phase	cruise : level
Route In Use	enroute : on vectors
Flight Plan	VFR
Aircraft 2
Controlling Facilities	tracon : nct.tracon
Operator	common carrier : air carrier
Make Model Name	B747 Undifferentiated or Other Model
Flight Phase	climbout : initial 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 : 150 flight time total : 6000 flight time type : 1900
ASRS Report	510780
Events
Anomaly	conflict : airborne critical other anomaly other
Resolutory Action	controller : separated traffic flight crew : took evasive action flight crew : took precautionary avoidance action
Miss Distance	horizontal : 5000 vertical : 200
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance Environmental Factor
Primary Problem	Environmental Factor

Narrative:

Following northbound shoreline route at 3500 ft, advised by bay approach of B747 departing wbound from sfo. Called B747 in sight, and was directed by bay to 'pass behind.' altered course about 50 degrees right, and passed behind B747 by about 1 mi. B747 captain initiated a TCASII-directed descent as I was crossing his track behind him. We were never closer than 1 mi, and our tracks were diverging when he got the RA.

Original NASA ASRS Text

Title: BE20 IS DIRECTED TO PASS BEHIND B747 DEPARTING WBOUND OFF SFO AT DIRECTION OF N90, WHICH CAUSES A TCASII RA FOR THE B747.

Narrative: FOLLOWING NBOUND SHORELINE RTE AT 3500 FT, ADVISED BY BAY APCH OF B747 DEPARTING WBOUND FROM SFO. CALLED B747 IN SIGHT, AND WAS DIRECTED BY BAY TO 'PASS BEHIND.' ALTERED COURSE ABOUT 50 DEGS R, AND PASSED BEHIND B747 BY ABOUT 1 MI. B747 CAPT INITIATED A TCASII-DIRECTED DSCNT AS I WAS XING HIS TRACK BEHIND HIM. WE WERE NEVER CLOSER THAN 1 MI, AND OUR TRACKS WERE DIVERGING WHEN HE GOT THE RA.

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.

BE20 is directed to pass behind B747 departing wbound off sfo at direction of N90, which causes a TCASII RA for the B747.