A DC9-50 flight crew had a BAE146 departing mem fail to maintain separation.

Attributes
ACN	452479
Time
Date	199910
Day	Wed
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : mem.airport
State Reference	TN
Altitude	msl single value : 6000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	DC-9 50
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : mem.tracon
Operator	common carrier : air carrier
Make Model Name	BAe 146 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 200 flight time total : 5000 flight time type : 500
ASRS Report	452383
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 15000 flight time type : 5000
ASRS Report	452479
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne critical non adherence : required legal separation non adherence : far non adherence : clearance other spatial deviation
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 3000 vertical : 200
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

The BAE146 took off after us. We were cleared by departure to turn left from our heading of 360 degrees to 180 degrees and climb to 16000 ft. Departure cleared the BAE146 to 14000 ft with a vector heading of 260 degrees. He had reported visual contact on us to departure and was told to maintain visual separation from us on his climb. He was climbing faster than us and continued his visual climb through our altitude. We received a TCASII RA and turned to a heading of 140 degrees. He passed below us by 200 ft and less than 1/2 mi horizontal.

Original NASA ASRS Text

Title: A DC9-50 FLC HAD A BAE146 DEPARTING MEM FAIL TO MAINTAIN SEPARATION.

Narrative: THE BAE146 TOOK OFF AFTER US. WE WERE CLRED BY DEP TO TURN L FROM OUR HDG OF 360 DEGS TO 180 DEGS AND CLB TO 16000 FT. DEP CLRED THE BAE146 TO 14000 FT WITH A VECTOR HDG OF 260 DEGS. HE HAD RPTED VISUAL CONTACT ON US TO DEP AND WAS TOLD TO MAINTAIN VISUAL SEPARATION FROM US ON HIS CLB. HE WAS CLBING FASTER THAN US AND CONTINUED HIS VISUAL CLB THROUGH OUR ALT. WE RECEIVED A TCASII RA AND TURNED TO A HDG OF 140 DEGS. HE PASSED BELOW US BY 200 FT AND LESS THAN 1/2 MI HORIZ.

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.