<< >> NASA ASRS Report 513930, June 2001

An A320 captain reported that ZBW issued a clearance to climb which caused an RA with another aircraft.

Attributes
ACN	513930
Time
Date	200106
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : zbw.artcc
State Reference	NH
Altitude	msl single value : 13000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	A320
Flight Phase	climbout : vacating altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zbw.artcc
Operator	common carrier : air carrier
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 9000 flight time type : 2572
ASRS Report	513930
Events
Anomaly	conflict : airborne critical non adherence : required legal separation non adherence : published procedure
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

We were leveled at 13000 ft due to reported traffic at 14000 ft at about 10 O'clock position. Center asked the ATR if they had us in sight and could remain clear. When they responded that they could, we were issued a climb clearance to FL230. We had the ATR on TCASII and visually acquired the ATR as we started our climb. Shortly after starting climb with a good rate, we got an RA to descend. Since we could see that the ATR was going to pass below and behind and they also were expecting us to climb, we continued to climb. I'm not sure if center knew we would get an RA, but it was disconcerting.

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Original NASA ASRS Text

Title: AN A320 CAPT RPTED THAT ZBW ISSUED A CLRNC TO CLB WHICH CAUSED AN RA WITH ANOTHER ACFT.

Narrative: WE WERE LEVELED AT 13000 FT DUE TO RPTED TFC AT 14000 FT AT ABOUT 10 O'CLOCK POS. CTR ASKED THE ATR IF THEY HAD US IN SIGHT AND COULD REMAIN CLR. WHEN THEY RESPONDED THAT THEY COULD, WE WERE ISSUED A CLB CLRNC TO FL230. WE HAD THE ATR ON TCASII AND VISUALLY ACQUIRED THE ATR AS WE STARTED OUR CLB. SHORTLY AFTER STARTING CLB WITH A GOOD RATE, WE GOT AN RA TO DSND. SINCE WE COULD SEE THAT THE ATR WAS GOING TO PASS BELOW AND BEHIND AND THEY ALSO WERE EXPECTING US TO CLB, WE CONTINUED TO CLB. I'M NOT SURE IF CTR KNEW WE WOULD GET AN RA, BUT IT WAS DISCONCERTING.

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.