Regional Jet 200 ER/LR (CRJ200)
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Returned To Departure Airport; Flight Crew Inflight Shutdown; General Declared Emergency
Aircraft
On initial climb out; leveled at 3;000 ft; then 5;000 ft; then 7;000 ft.  Leveling at 7;000 ft; Captain (CA) pulled throttles back and #1 engine remained at previous setting; then went to APR power setting; 89.3% N1.  Pilots suspected broken throttle cable.  Only QRH procedure available was for stuck throttle.  Had ATC give us vectors and remained at 10;000 ft; expecting to return to [departure airport] and do emergency landing.  Ran QRH for stuck throttle; shut down engine #1.  CA ran QRH and attempted contact with [company] radio.  No contact at 10;000 feet.  First Officer flew aircraft and declared emergency with ATC when CA finished with PA and ACARS message to maintenance.  Ran single engine scenario through and got vectors to runway (winds were 310 at 15G25).  Visual landing uneventful.  Met by fire department on second high speed turnoff.  Landed at 47;692 lbs.  After fire crew inspected aircraft; taxied back to gate. Cause: No errors or undesired aircraft states noted; other than unresponsive engine.  QRH should include procedure for suspected broken throttle cable; or unresponsive engine; even if part of jammed throttle procedure.
CRJ-200 First Officer reported encountering stuck power lever on climbout. The engine was shut down as per the checklist and they returned to departure airport.