An air carrier medium large transport climbed in response to a TCASII command.

Attributes
ACN	246265
Time
Date	199307
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : lrp airport : bwi
State Reference	PA
Altitude	msl bound lower : 12000 msl bound upper : 13000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zjx
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude cruise other
Route In Use	enroute airway : zny
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft
Flight Phase	cruise other
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 170 flight time total : 10000 flight time type : 170
ASRS Report	246265
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe inflight encounter : vfr in imc non adherence : clearance non adherence : required legal separation other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa
Resolutory Action	flight crew : took evasive action other
Consequence	Other
Miss Distance	horizontal : 1000 vertical : 6000
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Crossed lancaster VOR outbound on V499 to 190 degree radial at 12000 ft. ZNY called traffic 12 O'clock. Received TA, then RA and initiated climb to 13000 ft. Visual reference to contact made as he passed in between cumulus buildups. He was in and out of IFR conditions without flight plan. Single engine aircraft. After threat, resumed 12000 ft clearance to bwi and informed center.

Original NASA ASRS Text

Title: AN ACR MLG CLBED IN RESPONSE TO A TCASII COMMAND.

Narrative: CROSSED LANCASTER VOR OUTBOUND ON V499 TO 190 DEG RADIAL AT 12000 FT. ZNY CALLED TFC 12 O'CLOCK. RECEIVED TA, THEN RA AND INITIATED CLB TO 13000 FT. VISUAL REF TO CONTACT MADE AS HE PASSED IN BTWN CUMULUS BUILDUPS. HE WAS IN AND OUT OF IFR CONDITIONS WITHOUT FLT PLAN. SINGLE ENG ACFT. AFTER THREAT, RESUMED 12000 FT CLRNC TO BWI AND INFORMED CTR.

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.