ATR72 flight crew received TCASII RA evasive action climb command on jump aircraft not visually sighted. Reporter claims the traffic had not been issued by ATC. Reporter heard ATC tell jump aircraft about reporter's aircraft location.

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Attributes
ACN	374775
Time
Date	199707
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : adm
State Reference	OK
Altitude	msl bound lower : 12000 msl bound upper : 12000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zfw
Operator	common carrier : air carrier
Make Model Name	ATR 72
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Route In Use	arrival other
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise other descent other
Route In Use	approach : visual
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 240 flight time total : 16000 flight time type : 240
ASRS Report	374775
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : airborne less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

ATC did not advise air carrier flight of jump plane. Jump plane appeared on TCASII +500 ft and TCASII RA directed 2000 FPM climb, as jump plane dived across air carrier nose. No visual contact. ATC had advised jump plane of our location and encouraged that plane to descend through our altitude. Cabin service was in progress and no flight attendant was hurt. FAA ATC person on my jump seat said jump plane was too close to clouds/FAA controller had opportunity to advise air carrier of danger.

Original NASA ASRS Text

Title: ATR72 FLC RECEIVED TCASII RA EVASIVE ACTION CLB COMMAND ON JUMP ACFT NOT VISUALLY SIGHTED. RPTR CLAIMS THE TFC HAD NOT BEEN ISSUED BY ATC. RPTR HEARD ATC TELL JUMP ACFT ABOUT RPTR'S ACFT LOCATION.

Narrative: ATC DID NOT ADVISE ACR FLT OF JUMP PLANE. JUMP PLANE APPEARED ON TCASII +500 FT AND TCASII RA DIRECTED 2000 FPM CLB, AS JUMP PLANE DIVED ACROSS ACR NOSE. NO VISUAL CONTACT. ATC HAD ADVISED JUMP PLANE OF OUR LOCATION AND ENCOURAGED THAT PLANE TO DSND THROUGH OUR ALT. CABIN SVC WAS IN PROGRESS AND NO FLT ATTENDANT WAS HURT. FAA ATC PERSON ON MY JUMP SEAT SAID JUMP PLANE WAS TOO CLOSE TO CLOUDS/FAA CTLR HAD OPPORTUNITY TO ADVISE ACR OF DANGER.

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.