Narrative:

While on the arrival two EICAS messages appeared; stall protection system (sps) advanced and flap low speed; as well as no indications of flap position. Below 250KIAS; the captain and I decided to position the flap lever to the 9 degrees position to see if there was any movement or no indication. With still no flap indication; we called our flight attendant to have her check out the windows to see if the flaps had changed position; she called back to say the flaps had not moved. Captain flew the airplane; and I proceeded to run through the QRH for flap failure at 0 degrees. I [let] ATC [know about our] flight control failure of the flaps; and asked for delay vectors. The captain and I briefed our flight attendant; the company (dispatch/maintenance); and the passengers about the situation. Once we were ready; we asked ATC to return to the airport. The captain flew the ILS approach; [and] landed with no further issues. I notified ATC that we would require no further assistance; and we taxied into the gate.the aircraft was in an undesired state to land with the flaps stuck at 0 degrees. After calculating landing distance with the ACARS with a QRH landing distance penalty applied; the captain and I determined that the runway length suitable to land as safely as possible in the undesired aircraft state.

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Original NASA ASRS Text

Title: EMB-145LR First Officer reported flap failure resulting in a successful zero flap approach and landing.

Narrative: While on the arrival two EICAS messages appeared; Stall Protection System (SPS) ADVANCED and FLAP LOW SPEED; as well as no indications of flap position. Below 250KIAS; the Captain and I decided to position the flap lever to the 9 degrees position to see if there was any movement or no indication. With still no flap indication; we called our flight attendant to have her check out the windows to see if the flaps had changed position; she called back to say the flaps had not moved. Captain flew the airplane; and I proceeded to run through the QRH for flap failure at 0 degrees. I [let] ATC [know about our] flight control failure of the flaps; and asked for delay vectors. The Captain and I briefed our flight attendant; the company (dispatch/maintenance); and the passengers about the situation. Once we were ready; we asked ATC to return to the airport. The Captain flew the ILS approach; [and] landed with no further issues. I notified ATC that we would require no further assistance; and we taxied into the gate.The aircraft was in an undesired state to land with the flaps stuck at 0 degrees. After calculating landing distance with the ACARS with a QRH landing distance penalty applied; the captain and I determined that the runway length suitable to land as safely as possible in the undesired aircraft state.

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.