A traffic conflict resolved by compliance with a TCASII RA.

Attributes
ACN	548858
Time
Date	200205
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	intersection : burgs
State Reference	WV
Altitude	msl bound lower : 24000 msl bound upper : 24500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : zob.tower
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise : enroute altitude change
Route In Use	enroute airway : j14.airway
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zob.artcc
Operator	common carrier : air carrier
Make Model Name	Widebody Transport
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : atp
Experience	flight time last 90 days : 70 flight time total : 10500 flight time type : 7130
ASRS Report	548858
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 4200 flight time type : 1400
ASRS Report	548911
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : published procedure
Independent Detector	aircraft equipment : tcas
Miss Distance	horizontal : 0 vertical : 1000
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Level FL240, established J145, just north of burgs intersection. Received a TCASII resolution. Followed TCASII guidance, climbed to FL245. Informed ZOB of TCASII resolution and altitude deviation. We passed overhead a widebody transport aircraft. After clear of traffic, we returned to our assigned altitude of FL240. When we received the TA, we visually acquired the aircraft. TCASII indicated he was 1200 ft below and climbing. When TCASII issued a traffic resolution, we couldn't determine visually whether we'd maintain proper separation. We followed the TCASII guidance which never allowed us to get within 1000 ft vertical separation.

Original NASA ASRS Text

Title: A TFC CONFLICT RESOLVED BY COMPLIANCE WITH A TCASII RA.

Narrative: LEVEL FL240, ESTABLISHED J145, JUST N OF BURGS INTXN. RECEIVED A TCASII RESOLUTION. FOLLOWED TCASII GUIDANCE, CLBED TO FL245. INFORMED ZOB OF TCASII RESOLUTION AND ALTDEV. WE PASSED OVERHEAD A WDB ACFT. AFTER CLR OF TFC, WE RETURNED TO OUR ASSIGNED ALT OF FL240. WHEN WE RECEIVED THE TA, WE VISUALLY ACQUIRED THE ACFT. TCASII INDICATED HE WAS 1200 FT BELOW AND CLBING. WHEN TCASII ISSUED A TFC RESOLUTION, WE COULDN'T DETERMINE VISUALLY WHETHER WE'D MAINTAIN PROPER SEPARATION. WE FOLLOWED THE TCASII GUIDANCE WHICH NEVER ALLOWED US TO GET WITHIN 1000 FT VERT SEPARATION.

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.