Large transport on approach to sfo has conflict with spn operating at same altitude, not on radar.

Attributes
ACN	81792
Time
Date	198802
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sfo
State Reference	CA
Altitude	msl bound lower : 8000 msl bound upper : 8000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : oak
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	descent other
Route In Use	arrival star : star
Flight Plan	IFR
Aircraft 2
Operator	general aviation : instructional
Make Model Name	Sail Plane
Flight Phase	cruise other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : second officer
Qualification	pilot : instrument pilot : student pilot : flight engineer pilot : commercial pilot : cfi
Experience	flight time last 90 days : 240 flight time total : 8000 flight time type : 4000
ASRS Report	81792
Person 2
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Miss Distance	horizontal : 500 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

A glider was spotted at our 11 O'clock position, level at 8000' MSL. An immediate right turn was made and bay TRACON was notified. Bay said he (glider) was not painting on his radar.

Original NASA ASRS Text

Title: LGT ON APCH TO SFO HAS CONFLICT WITH SPN OPERATING AT SAME ALT, NOT ON RADAR.

Narrative: A GLIDER WAS SPOTTED AT OUR 11 O'CLOCK POS, LEVEL AT 8000' MSL. AN IMMEDIATE RIGHT TURN WAS MADE AND BAY TRACON WAS NOTIFIED. BAY SAID HE (GLIDER) WAS NOT PAINTING ON HIS RADAR.

Data retrieved from NASA's ASRS site as of August 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.