An IFR large transport crew climbed in response to a TCASII command. There was a VFR intruder in the...

Attributes
ACN	221818
Time
Date	199209
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : bwi
State Reference	MD
Altitude	msl bound lower : 16000 msl bound upper : 16300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	climbout : intermediate altitude
Flight Plan	VFR
Person 1
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	221818
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 9000 vertical : 1000
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

TCASII RA with 300 ft climb for traffic. Received climb RA on TCASII, climbed to 16300 ft. Advised ATC and returned to altitude. No further problems. Conflict aircraft was VFR and given us as traffic 1000 ft above him. He continued climb to within 400 ft of our altitude approximately 1 1/2 mi which resulted in RA climb. We never obtained visual contact.

Original NASA ASRS Text

Title: AN IFR LGT CREW CLBED IN RESPONSE TO A TCASII COMMAND. THERE WAS A VFR INTRUDER IN THE AREA.

Narrative: TCASII RA WITH 300 FT CLB FOR TFC. RECEIVED CLB RA ON TCASII, CLBED TO 16300 FT. ADVISED ATC AND RETURNED TO ALT. NO FURTHER PROBLEMS. CONFLICT ACFT WAS VFR AND GIVEN US AS TFC 1000 FT ABOVE HIM. HE CONTINUED CLB TO WITHIN 400 FT OF OUR ALT APPROX 1 1/2 MI WHICH RESULTED IN RA CLB. WE NEVER OBTAINED VISUAL CONTACT.

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.

An IFR large transport crew climbed in response to a TCASII command. There was a VFR intruder in the area.