Medium large transport has near midair collision with small aircraft during descent.

Attributes
ACN	241095
Time
Date	199305
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : hyp
State Reference	CA
Altitude	msl bound lower : 8000 msl bound upper : 10000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : oak
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	arrival other
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft
Flight Phase	climbout : intermediate altitude
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 8500 flight time type : 300
ASRS Report	241095
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	conflict : nmac
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	none taken : insufficient time
Consequence	Other
Miss Distance	horizontal : 100 vertical : 350
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

While flying el nido arrival to sjc, ATC called traffic at about 20 mi at 1 O'clock. We continued and the target on TCASII was converging. He was 1000 ft below us and climbing. ATC cleared us from 10000 ft to 8000 ft. Traffic continued to close on us. We first got a TA and then when the traffic was 1 mi we saw him visually and got a monitor vertical speed command. At the closest point the TCASII showed the small aircraft at 300-400 ft below and climbing just under the captain's window.

Original NASA ASRS Text

Title: MLG HAS NMAC WITH SMA DURING DSCNT.

Narrative: WHILE FLYING EL NIDO ARR TO SJC, ATC CALLED TFC AT ABOUT 20 MI AT 1 O'CLOCK. WE CONTINUED AND THE TARGET ON TCASII WAS CONVERGING. HE WAS 1000 FT BELOW US AND CLBING. ATC CLRED US FROM 10000 FT TO 8000 FT. TFC CONTINUED TO CLOSE ON US. WE FIRST GOT A TA AND THEN WHEN THE TFC WAS 1 MI WE SAW HIM VISUALLY AND GOT A MONITOR VERT SPD COMMAND. AT THE CLOSEST POINT THE TCASII SHOWED THE SMA AT 300-400 FT BELOW AND CLBING JUST UNDER THE CAPT'S WINDOW.

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.