<< >> NASA ASRS Report 1240952, February 2015

Pilots and controller report of two aircraft getting a RA and responding to the RA with no loss of separation. Controller possibly climbed one aircraft to the other's altitude.

Attributes
ACN	1240952
Time
Date	201502
Local Time Of Day	0001-0600
Place
Locale Reference	ZDC.ARTCC
State Reference	VA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Large Transport
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Aircraft 2
Make Model Name	Large Transport
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Person 1
Function	Enroute
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 10
Person 2
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 225 Flight Crew Total 12000 Flight Crew Type 7000
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy

Narrative:

I took radar on aircraft X at FL330 northbound requesting FL350. Had aircraft Y at FL350 south-eastbound. I thought I climbed aircraft X to FL340. Later on the two aircraft said they were getting an RA (resolution advisory) and one climbed and the other descended. No loss of separation. I was thinking of FL350. The aircraft X wanted FL350 for a final; and I had aircraft Y at FL350. I must have said FL350 even though my entry was FL340 for aircraft X.

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Original NASA ASRS Text

Title: Pilots and Controller report of two aircraft getting a RA and responding to the RA with no loss of separation. Controller possibly climbed one aircraft to the other's altitude.

Narrative: I took radar on Aircraft X at FL330 northbound requesting FL350. Had Aircraft Y at FL350 south-eastbound. I thought I climbed Aircraft X to FL340. Later on the two aircraft said they were getting an RA (resolution advisory) and one climbed and the other descended. No loss of separation. I was thinking of FL350. The Aircraft X wanted FL350 for a final; and I had Aircraft Y at FL350. I must have said FL350 even though my entry was FL340 for Aircraft X.

Data retrieved from NASA's ASRS site 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.