SF340 flight crew experienced compressor stalls; high itt; and low propeller RPM on departure. After...

Attributes
ACN	849605
Time
Date	200908
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	SF 340B
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Component
Aircraft Component	Turbine Engine
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 25 Flight Crew Total 9000 Flight Crew Type 7500
Person 2
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Commercial
Experience	Flight Crew Last 90 Days 25 Flight Crew Total 3500 Flight Crew Type 2400
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

After takeoff making loud banging noises. Initially we thought we had lost the #2 engine; but after a closer look at the engine instruments determined that the engine was still operating. The engine overtemp light was on and engine temp was approx 1025; torque was zero; and prop RPM 400-500. The first officer brought the power back to 25-30% and ctot (constant torque on takeoff) down and off for memory items for a compressor stall which lowered the temp on the engine and quieted it down. An emergency was declared and we began receiving vectors for an ILS. The flight attendant; passengers and dispatch were all notified. I thought we had a problem in the prop gearbox and we completed the low prop RPM checklist in the non-normal procedures; which lead us to shut the engine down. We landed uneventfully.

Original NASA ASRS Text

Title: SF340 flight crew experienced compressor stalls; high ITT; and low propeller RPM on departure. After some confusion the engine was shutdown; an emergency declared; and the flight returned to the departure airport.

Narrative: After takeoff making loud banging noises. Initially we thought we had lost the #2 engine; but after a closer look at the engine instruments determined that the engine was still operating. The engine overtemp light was on and engine temp was approx 1025; torque was zero; and prop RPM 400-500. The First Officer brought the power back to 25-30% and CTOT (Constant Torque on Takeoff) down and off for memory items for a compressor stall which lowered the temp on the engine and quieted it down. An emergency was declared and we began receiving vectors for an ILS. The Flight Attendant; passengers and Dispatch were all notified. I thought we had a problem in the prop gearbox and we completed the low prop RPM checklist in the non-normal procedures; which lead us to shut the engine down. We landed uneventfully.

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.

SF340 flight crew experienced compressor stalls; high itt; and low propeller RPM on departure. After some confusion the engine was shutdown; an emergency declared; and the flight returned to the departure airport.