Emb-145 captain reported receiving an RA to descend at the same time ATC was telling them to climb.

Attributes
ACN	1480333
Time
Date	201709
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	EMB ERJ 145 ER/LR
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict

Narrative:

Climbing to 25;000 feet. At 10;000 feet TCAS gave us a TA. Traffic was approaching above us at 10-11 o'clock. ATC gave us instruction 'expedite climb.' at the same time TCAS RA gave us 'descend'. We followed TCAS RA and initiated descent. We informed ATC about RA. In VMC we never saw the traffic. After 'clear of conflict' we continued to climb to 25;000 feet.

Original NASA ASRS Text

Title: EMB-145 Captain reported receiving an RA to descend at the same time ATC was telling them to climb.

Narrative: Climbing to 25;000 feet. At 10;000 feet TCAS gave us a TA. Traffic was approaching above us at 10-11 o'clock. ATC gave us instruction 'Expedite climb.' At the same time TCAS RA gave us 'Descend'. We followed TCAS RA and initiated descent. We informed ATC about RA. In VMC we never saw the traffic. After 'Clear of conflict' we continued to climb to 25;000 feet.

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.