TCASII RA and pilot response creates an altitude deviation altitude excursion during an evasive acti...

Attributes
ACN	201951
Time
Date	199202
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : bwi
State Reference	MD
Altitude	msl bound lower : 2500 msl bound upper : 3400
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : bwi
Operator	common carrier : air carrier
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 10700 flight time type : 1500
ASRS Report	201951
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance non adherence : required legal separation other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	vertical : 900
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Received a TA for traffic at 12 O'clock, below the airplane. Could not get visual on the aircraft. Baltimore gave us a descent to 2500 ft and at the same time we received commands from the TCASII to climb. We immediately climbed and at 3400 ft got the all clear from the TCASII. At that point we initiated a descent to 2500 ft as assigned and reported the TCASII deviation to ATC.

Original NASA ASRS Text

Title: TCASII RA AND PLT RESPONSE CREATES AN ALTDEV ALT EXCURSION DURING AN EVASIVE ACTION CLB.

Narrative: RECEIVED A TA FOR TFC AT 12 O'CLOCK, BELOW THE AIRPLANE. COULD NOT GET VISUAL ON THE ACFT. BALTIMORE GAVE US A DSCNT TO 2500 FT AND AT THE SAME TIME WE RECEIVED COMMANDS FROM THE TCASII TO CLB. WE IMMEDIATELY CLBED AND AT 3400 FT GOT THE ALL CLR FROM THE TCASII. AT THAT POINT WE INITIATED A DSCNT TO 2500 FT AS ASSIGNED AND RPTED THE TCASII DEV TO ATC.

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.

TCASII RA and pilot response creates an altitude deviation altitude excursion during an evasive action climb.