Air carrier large transport nearly collides with WX balloon at FL390.

Attributes
ACN	82726
Time
Date	198802
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : mgm
State Reference	AL
Altitude	msl bound lower : 39000 msl bound upper : 39100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : ztl
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 150 flight time total : 14000 flight time type : 800
ASRS Report	82726
Person 2
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Miss Distance	horizontal : 0 vertical : 100

Narrative:

We were on a collision course with a WX balloon. Balloon transmitter passed directly overhead and missed the cockpit windshield by approximately 100'.

Original NASA ASRS Text

Title: ACR LGT NEARLY COLLIDES WITH WX BALLOON AT FL390.

Narrative: WE WERE ON A COLLISION COURSE WITH A WX BALLOON. BALLOON TRANSMITTER PASSED DIRECTLY OVERHEAD AND MISSED THE COCKPIT WINDSHIELD BY APPROX 100'.

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.