In-flight engine problem caused air carrier medium large transport to divert to alternate airport.

Attributes
ACN	144880
Time
Date	199005
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : air
State Reference	OH
Altitude	msl bound lower : 35000 msl bound upper : 35000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zny
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other cruise other other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 200 flight time total : 10000 flight time type : 5000
ASRS Report	144880
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 250 flight time total : 3500 flight time type : 1000
ASRS Report	144881
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency none taken : anomaly accepted other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

Level at FL50 in cruise flight. #2 motor started to surge and pop. We reduced power and turned on right wing anti-ice per the aircraft handbook procedure. The engine was ok at idle, but would start popping when the power lever was advanced. We declared an emergency and diverted to phl. Made a normal landing using single engine procedures. After landing the #2 engine started to overtemp and we shut it down.

Original NASA ASRS Text

Title: INFLT ENGINE PROBLEM CAUSED ACR MLG TO DIVERT TO ALTERNATE ARPT.

Narrative: LEVEL AT FL50 IN CRUISE FLT. #2 MOTOR STARTED TO SURGE AND POP. WE REDUCED PWR AND TURNED ON RIGHT WING ANTI-ICE PER THE ACFT HANDBOOK PROC. THE ENG WAS OK AT IDLE, BUT WOULD START POPPING WHEN THE PWR LEVER WAS ADVANCED. WE DECLARED AN EMER AND DIVERTED TO PHL. MADE A NORMAL LNDG USING SINGLE ENG PROCS. AFTER LNDG THE #2 ENG STARTED TO OVERTEMP AND WE SHUT IT DOWN.

Data retrieved from NASA's ASRS site as of July 2007 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.