<< >> NASA ASRS Report 519549, July 2001

An A320 crew climbing to FL310 responded to a TCASII descend RA.

Attributes
ACN	519549
Time
Date	200107
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ind.airport
State Reference	IN
Altitude	msl bound lower : 28000 msl bound upper : 28500
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid.artcc tracon : iad.tracon
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : enroute altitude change
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zid.artcc
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
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 : 210 flight time total : 10500 flight time type : 1800
ASRS Report	519549
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 8500 flight time type : 1900
ASRS Report	519727
Events
Anomaly	non adherence : required legal separation
Independent Detector	aircraft equipment : tcas
Resolutory Action	controller : issued new clearance flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 300 vertical : 500
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

While climbing to FL310, as cleared, passing FL280 TCASII activated a TA, immediately followed by an RA. Called center and was told to maintain FL280. While responding to TCASII we went from IMC to VMC and saw an MD80 pass overhead. Supplemental information from acn 519727: during climb to FL310, TCASII issued RA at FL285. Descent initiated to FL280. Traffic passed overhead, MD80. TA started in IMC. At end of RA, we broke out in VFR and had visual contact with conflict traffic.

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Original NASA ASRS Text

Title: AN A320 CREW CLBING TO FL310 RESPONDED TO A TCASII DSND RA.

Narrative: WHILE CLBING TO FL310, AS CLRED, PASSING FL280 TCASII ACTIVATED A TA, IMMEDIATELY FOLLOWED BY AN RA. CALLED CTR AND WAS TOLD TO MAINTAIN FL280. WHILE RESPONDING TO TCASII WE WENT FROM IMC TO VMC AND SAW AN MD80 PASS OVERHEAD. SUPPLEMENTAL INFO FROM ACN 519727: DURING CLB TO FL310, TCASII ISSUED RA AT FL285. DSCNT INITIATED TO FL280. TFC PASSED OVERHEAD, MD80. TA STARTED IN IMC. AT END OF RA, WE BROKE OUT IN VFR AND HAD VISUAL CONTACT WITH CONFLICT TFC.

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.