B737 captain reported completing the QRH engine limit or surge or stall checklist after number 2 eng...

Narrative:

While in cruise descent from FL370 on arrival 90 miles outside of our destination airframe vibrated with no abnormal engine indications. Went to idle descent and airframe vibrations seized. When advancing thrust levers to cruise at FL300 airframe vibrated and engine indications were erratic. Reduced thrust on number 2 engine until vibrations seized and engine indications were normal. We ran the QRH checklist for engine limit or surge or stall. With all indications normal elected to leave the engine running; ran one engine inoperative checklist; and asked ATC for priority handling; weather and to have fire and rescue standing by. Notified dispatch; destination station operations; flight attendants and passengers of situation and planned to land the aircraft in our destination. Landed safely; shutdown engine when clear of runway and had the fire department inspect the engine. No abnormal indications made by fire department. Taxied the aircraft to the gate with no further incident. Contacted dispatch; maintenance control; and chief pilot. Logbook entry was made for defect.

Original NASA ASRS Text

Title: B737 Captain reported completing the QRH ENGINE LIMIT OR SURGE OR STALL Checklist after number 2 engine developed vibrations during descent.

Narrative: While in cruise descent from FL370 on arrival 90 miles outside of our destination airframe vibrated with no abnormal engine indications. Went to idle descent and airframe vibrations seized. When advancing thrust levers to cruise at FL300 airframe vibrated and engine indications were erratic. Reduced thrust on number 2 engine until vibrations seized and engine indications were normal. We ran the QRH Checklist for engine limit or surge or stall. With all indications normal elected to leave the engine running; ran one Engine Inoperative Checklist; and asked ATC for priority handling; weather and to have Fire and Rescue standing by. Notified Dispatch; destination Station Operations; Flight Attendants and Passengers of situation and planned to land the aircraft in our destination. Landed safely; shutdown engine when clear of runway and had the Fire Department inspect the engine. No abnormal indications made by Fire Department. Taxied the aircraft to the gate with no further incident. Contacted Dispatch; Maintenance Control; and Chief Pilot. Logbook entry was made for defect.

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.

Attributes
ACN	1441833
Time
Date	201704
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Light	Night
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Descent
Flight Plan	IFR
Component
Aircraft Component	Turbine Engine
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 200
Events
Anomaly	Aircraft Equipment Problem Less Severe

B737 captain reported completing the QRH engine limit or surge or stall checklist after number 2 engine developed vibrations during descent.