Narrative:

Following a normal takeoff and departure; the left engine experienced a compressor stall and loss of thrust passing 4;300 ft MSL on a heading of 010 degrees magnetic. The failure was accompanied by a loud bang audible in the cockpit; and a slight left yawing moment. N1 went to 13 percent; all remaining indications went to zero (0). No indications of fire or seizure were present. Captain was flying the aircraft. Upon indications of failure; first officer pulled out the QRH; and ran the following checklists while captain turned the aircraft direct back to the airport. First checklist run was the engine/failure shutdown checklist. Steps 1-9 were completed; no driftdown was required and no restart was attempted. To configure for landing; captain called for the one engine inoperative checklist. This was completed and the aircraft was configured flaps 15 for landing. Captain maneuvered the aircraft for a straight-in approach. First officer coordinated with approach; then tower for the approach. First officer alerted passengers and flight attendants to the situation and directed all in the cabin to remain seated with their seatbelts fastened through approach; landing; and rollout. First officer requested emergency vehicles upon arrival and declared an emergency via 7700 and voice. Flight crew configured for a flaps 15 approach however; target speed appeared to be to slow at 135 KTS. Captain decided to maintain a target speed of 150 KTS on final. Crew landed the aircraft without further incident. Fire rescue crew cleared the aircraft of any fire hazard and the captain elected to taxi to the gate on the right engine. Maintenance and customer service met the aircraft at gate. Incidental failure of critical engine part. Examine current change schedule of this part to ensure adequate service life through current schedule.

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Original NASA ASRS Text

Title: B737 First Officer reports an engine failure climbing out of 4;300 FT. An emergency is declared; the engine is shut down; and the flight returns to departure airport. The calculated approach speed of 135 KTS is deemed too low by the Captain and 150 KTS is used for approach.

Narrative: Following a normal takeoff and departure; the left engine experienced a compressor stall and loss of thrust passing 4;300 FT MSL on a heading of 010 degrees magnetic. The failure was accompanied by a loud bang audible in the cockpit; and a slight left yawing moment. N1 went to 13 percent; all remaining indications went to zero (0). No indications of fire or seizure were present. Captain was flying the aircraft. Upon indications of failure; First Officer pulled out the QRH; and ran the following checklists while Captain turned the aircraft direct back to the airport. First checklist run was the Engine/Failure Shutdown checklist. Steps 1-9 were completed; no driftdown was required and no restart was attempted. To configure for landing; Captain called for the One Engine Inoperative Checklist. This was completed and the aircraft was configured flaps 15 for landing. Captain maneuvered the aircraft for a straight-in approach. First Officer coordinated with Approach; then Tower for the approach. First Officer alerted passengers and flight attendants to the situation and directed all in the cabin to remain seated with their seatbelts fastened through approach; landing; and rollout. First Officer requested emergency vehicles upon arrival and declared an emergency via 7700 and voice. Flight crew configured for a flaps 15 approach however; target speed appeared to be to slow at 135 KTS. Captain decided to maintain a target speed of 150 KTS on final. Crew landed the aircraft without further incident. Fire Rescue Crew cleared the aircraft of any fire hazard and the Captain elected to taxi to the gate on the right engine. Maintenance and Customer Service met the aircraft at gate. Incidental failure of critical engine part. Examine current change schedule of this part to ensure adequate service life through current schedule.

Data retrieved from NASA's ASRS site as of April 2012 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.