Date: 202112
Local time of day: 0601-1200
Location: ZZZ1.Tower, US
Flight conditions: VMC
Light: Daylight
Aircraft: B737-700
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Initial Approach
Airspace: Class B ZZZ1
ATC / advisory: Tower ZZZ1
Aircraft component: Turbine Engine
Component problem: Malfunctioning
Reporter organization: Air Carrier
Reporter function: Pilot Not Flying; First Officer
Reporter qualification: Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Human factors: Troubleshooting; Workload; Communication Breakdown; Confusion; Situational Awareness; Time Pressure
Anomaly: Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Detector: Person Flight Crew
When detected: In-flight
Result: Air Traffic Control Provided Assistance; Flight Crew Overcame Equipment Problem; Flight Crew Requested ATC Assistance / Clarification; General Flight Cancelled / Delayed; General Maintenance Action
Contributing factors: Human Factors; Aircraft; Procedure
Primary problem: Aircraft

Narrative: I was First Officer and Pilot Monitoring Aircraft X; ZZZ-ZZZ1; Date. At some point below 2000 feet MSL on ILS XXL; we began to feel vibrations 'in the seat'; and shortly after noticed indications in the number 1 engine. We continued the approach; monitoring the engine instruments and indications. At approximately 1000 feet vibrations increased along with an increase in EGT and banging (compressor stalls?) coming from the engine. At some point the Pilot Flying stated he had lost power from the number 1 engine. Just before landing the vibration increased and indicated 4.5 along with the box around the vibration indication. Also the temp on the number 1 engine quickly increased to 750 degrees (from what I last recall).We continued the landing and rolled off on the high speed. Captain asked me to ask Tower if they observed any smoke and another aircraft reported he had observed flames coming from the number 1 engine. Tower responded the fire trucks were en route to our position as we ran the engine fire or severe damage QRC and determined we did not have any fire indications. We continued to the QRH checklists. The Captain did an excellent job informing the Flight Attendants and announcing to the Passengers to remain seated and that we'd get right back to them. The Fire Department informed us there were no indications of fire and we taxied to the gate. The only other thing I'd like to mention is it seemed we were bombarded with questions on the taxi in; not sure if it was from Ops or from Maintenance. It was a busy period; and both the Captain and I were probably overloaded with adrenaline. Once at the gate; again it seemed there were many people to greet us at the gate. I know intentions were only to provide help; and I don't honestly have suggestions for change for the better; but it did seem like a lot to handle all at once when taxiing to the gate and once the main entry door was opened. I'd hope for less communication from the Ops/Maintenance during a busy stressful time taxiing in.




Synopsis: First Officer reported loss of power on the #1 engine during approach but landed safely.