Air carrier medium large transport altitude deviation excursion from clearance altitude in response ...

Attributes
ACN	198266
Time
Date	199201
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : atl
State Reference	GA
Altitude	msl bound lower : 11000 msl bound upper : 11300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : atl
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other descent other
Route In Use	arrival star : star enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 60 flight time total : 3500 flight time type : 350
ASRS Report	198266
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Miss Distance	vertical : 1000
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On approach to atlanta, we were directed to descend to 11000 ft as we leveled, approach gave us a left turn to approximately east (atl landing west, we were on rome arrival). An aircraft on departure climbing to 10000 triggered a TCASII RA. We climbed to 11300 before getting a visual on the traffic and returning to 11000. We advised the controller that we had experienced a TCASII RA. I have seen this exact scenario in dallas at dfw. TCASII doesn't know the departing traffic is going to level at 10000 so it projects a conflict with arriving traffic at 11000. If ATC does not provide more horizontal or vertical separation between arriving and departing traffic, these annoying TCASII RA's will induce pilots to start turning the system off in the air traffic area where it is most likely to save us from having an accident.

Original NASA ASRS Text

Title: ACR MLG ALTDEV EXCURSION FROM CLRNC ALT IN RESPONSE TO TCASII RA.

Narrative: ON APCH TO ATLANTA, WE WERE DIRECTED TO DSND TO 11000 FT AS WE LEVELED, APCH GAVE US A L TURN TO APPROX E (ATL LNDG W, WE WERE ON ROME ARR). AN ACFT ON DEP CLBING TO 10000 TRIGGERED A TCASII RA. WE CLBED TO 11300 BEFORE GETTING A VISUAL ON THE TFC AND RETURNING TO 11000. WE ADVISED THE CTLR THAT WE HAD EXPERIENCED A TCASII RA. I HAVE SEEN THIS EXACT SCENARIO IN DALLAS AT DFW. TCASII DOESN'T KNOW THE DEPARTING TFC IS GOING TO LEVEL AT 10000 SO IT PROJECTS A CONFLICT WITH ARRIVING TFC AT 11000. IF ATC DOES NOT PROVIDE MORE HORIZ OR VERT SEPARATION BTWN ARRIVING AND DEPARTING TFC, THESE ANNOYING TCASII RA'S WILL INDUCE PLTS TO START TURNING THE SYS OFF IN THE ATA WHERE IT IS MOST LIKELY TO SAVE US FROM HAVING AN ACCIDENT.

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.

Air carrier medium large transport altitude deviation excursion from clearance altitude in response to TCASII RA.