Air carrier X had conflict with glider on approach to uncontrolled airport. See and avoid concept.

Attributes
ACN	307962
Time
Date	199506
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : fca
State Reference	MT
Altitude	agl bound lower : 2500 agl bound upper : 2500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zlc
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Sail Plane
Operating Under FAR Part	Part 91
Flight Plan	None
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 : 1800 flight time type : 2000
ASRS Report	307962
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : airborne less severe
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Miss Distance	horizontal : 500 vertical : 300
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other
Situations
Airport	procedure or policy : unspecified

Narrative:

Air carrier X cleared visual approach by ZLC, at angil intersection. Flew direct glaci OM, captain flying, at north edge of flathead lake switched to CTAF 123.0 and announced location and intention to land runway 2. No aircraft or unicom response. Switched back to ZLC on #2 radio to cancel IFR then switched back to CTAF on #1 radio, announced 7 mi south kalispell, inbound straight in runway 2 kalispell. Seconds later a glider was at 1 to 2 O'clock to our aircraft 1/2 mi converging. Glider passed below and to our right. No evasive action was needed. Glider called us after we passed. We told him we did not know he was in the area since he did not respond to our calls on CTAF. We announced our intentions again over CTAF, 5 mi straight in runway 2 kalispell. Landing was uneventful.

Original NASA ASRS Text

Title: ACR X HAD CONFLICT WITH GLIDER ON APCH TO UNCTLED ARPT. SEE AND AVOID CONCEPT.

Narrative: ACR X CLRED VISUAL APCH BY ZLC, AT ANGIL INTXN. FLEW DIRECT GLACI OM, CAPT FLYING, AT N EDGE OF FLATHEAD LAKE SWITCHED TO CTAF 123.0 AND ANNOUNCED LOCATION AND INTENTION TO LAND RWY 2. NO ACFT OR UNICOM RESPONSE. SWITCHED BACK TO ZLC ON #2 RADIO TO CANCEL IFR THEN SWITCHED BACK TO CTAF ON #1 RADIO, ANNOUNCED 7 MI S KALISPELL, INBOUND STRAIGHT IN RWY 2 KALISPELL. SECONDS LATER A GLIDER WAS AT 1 TO 2 O'CLOCK TO OUR ACFT 1/2 MI CONVERGING. GLIDER PASSED BELOW AND TO OUR R. NO EVASIVE ACTION WAS NEEDED. GLIDER CALLED US AFTER WE PASSED. WE TOLD HIM WE DID NOT KNOW HE WAS IN THE AREA SINCE HE DID NOT RESPOND TO OUR CALLS ON CTAF. WE ANNOUNCED OUR INTENTIONS AGAIN OVER CTAF, 5 MI STRAIGHT IN RWY 2 KALISPELL. LNDG WAS UNEVENTFUL.

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.