MD80 crew had less than legal separation in nct class C.

Attributes
ACN	569683
Time
Date	200212
Day	Sat
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : sjc.airport
State Reference	CA
Altitude	msl single value : 3000
Environment
Flight Conditions	Marginal
Weather Elements	Rain
Aircraft 1
Controlling Facilities	tracon : nct.tracon
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 12l
Flight Phase	descent : approach
Route In Use	approach : instrument precision
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : nct.tracon
Operator	other
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	569683
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	airspace violation : entry conflict : airborne critical non adherence : far non adherence : published procedure non adherence : required legal separation other anomaly other
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	flight crew : executed missed approach flight crew : took evasive action none taken : detected after the fact other
Consequence	faa : reviewed incident with flight crew other
Supplementary
Problem Areas	Airspace Structure Flight Crew Human Performance ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Radar vectors from downwind to base for ILS runway 12L sjc received TCASII RA action taken to maneuver in accordance with TCASII commands. ATC informed. Returned to 3000 ft MSL assigned. Continued approach. Called sierra approach upon arrival via telephone. Was informed the other aircraft had been on visual approach to moffett NAS and had lost visual contact. Executed missed approach. During the missed approach the aircraft strayed into our airspace.

Original NASA ASRS Text

Title: MD80 CREW HAD LESS THAN LEGAL SEPARATION IN NCT CLASS C.

Narrative: RADAR VECTORS FROM DOWNWIND TO BASE FOR ILS RWY 12L SJC RECEIVED TCASII RA ACTION TAKEN TO MANEUVER IN ACCORDANCE WITH TCASII COMMANDS. ATC INFORMED. RETURNED TO 3000 FT MSL ASSIGNED. CONTINUED APCH. CALLED SIERRA APCH UPON ARR VIA TELEPHONE. WAS INFORMED THE OTHER ACFT HAD BEEN ON VISUAL APCH TO MOFFETT NAS AND HAD LOST VISUAL CONTACT. EXECUTED MISSED APCH. DURING THE MISSED APCH THE ACFT STRAYED INTO OUR AIRSPACE.

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.