Air carrier widebody transport altitude deviation excursion from clearance altitude in response to T...

Attributes
ACN	181242
Time
Date	199106
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : bwz airport : lga
State Reference	NJ
Altitude	msl bound lower : 16600 msl bound upper : 17000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zny
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
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 : 20000 flight time type : 2500
ASRS Report	181242
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
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Miss Distance	horizontal : 18000 vertical : 900
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were assigned and approaching 17000' on climb out from lga on a west heading. Approaching bwz, TCAS showed aircraft 12 O'clock, level 6 mi but climbing. As aircraft neared, it moved to pass off our right about 3 mi. Prior to passing, TCAS showed aircraft at 200-300' above. It also gave T/a and then an right/a commanding descent. Command was followed to 16600', where descent command ceased and aircraft passed our 3 O'clock indicating 900' above us or 17500'. We had been advised of the traffic by ATC. We advised ATC of the altitude TCAS deviation and returned to 17000'.

Original NASA ASRS Text

Title: ACR WDB ALT DEVIATION EXCURSION FROM CLRNC ALT IN RESPONSE TO TCASII RA.

Narrative: WE WERE ASSIGNED AND APCHING 17000' ON CLBOUT FROM LGA ON A W HDG. APCHING BWZ, TCAS SHOWED ACFT 12 O'CLOCK, LEVEL 6 MI BUT CLBING. AS ACFT NEARED, IT MOVED TO PASS OFF OUR RIGHT ABOUT 3 MI. PRIOR TO PASSING, TCAS SHOWED ACFT AT 200-300' ABOVE. IT ALSO GAVE T/A AND THEN AN R/A COMMANDING DSNT. COMMAND WAS FOLLOWED TO 16600', WHERE DSNT COMMAND CEASED AND ACFT PASSED OUR 3 O'CLOCK INDICATING 900' ABOVE US OR 17500'. WE HAD BEEN ADVISED OF THE TFC BY ATC. WE ADVISED ATC OF THE ALT TCAS DEVIATION AND RETURNED TO 17000'.

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 widebody transport altitude deviation excursion from clearance altitude in response to TCASII RA.