Falcon 2000 captain at FL400 reports engine rumbling turning to an itt exceedance during descent and...

Attributes
ACN	788264
Time
Date	200805
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 40000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zzz.artcc artcc : zzz.artcc
Operator	general aviation : corporate
Make Model Name	Falcon 2000
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 140 flight time total : 8650 flight time type : 1550
ASRS Report	788264
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : landed in emergency condition flight crew : declared emergency flight crew : diverted to another airport
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Flying at FL400; we experienced a rumbling in the #1 engine with rising itt temperatures. We did an emergency divert to ZZZ with a descent started after declaring an emergency with the #1 engine running at idle. During the descent the engine parameters continued to rise; so we elected to secure the engine. An uneventful single engine landing was made at ZZZ. The emergency was declared with center and we spoke to numerous center controllers; then ZZZ approach and tower. No clrncs were exceeded from the start of the emergency to the aircraft being shut down and secured. Callback conversation with reporter revealed the following information: engine teardown at the repair shop revealed that bearing failure had occurred; causing considerable damage to the engine. The reporter also stated that oil temperature was steadily rising prior to the onset of engine rumble.

Original NASA ASRS Text

Title: FALCON 2000 CAPT AT FL400 REPORTS ENGINE RUMBLING TURNING TO AN ITT EXCEEDANCE DURING DESCENT AND DIVERSION.

Narrative: FLYING AT FL400; WE EXPERIENCED A RUMBLING IN THE #1 ENG WITH RISING ITT TEMPS. WE DID AN EMER DIVERT TO ZZZ WITH A DSCNT STARTED AFTER DECLARING AN EMER WITH THE #1 ENG RUNNING AT IDLE. DURING THE DSCNT THE ENG PARAMETERS CONTINUED TO RISE; SO WE ELECTED TO SECURE THE ENG. AN UNEVENTFUL SINGLE ENG LNDG WAS MADE AT ZZZ. THE EMER WAS DECLARED WITH CTR AND WE SPOKE TO NUMEROUS CTR CTLRS; THEN ZZZ APCH AND TWR. NO CLRNCS WERE EXCEEDED FROM THE START OF THE EMER TO THE ACFT BEING SHUT DOWN AND SECURED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: ENGINE TEARDOWN AT THE REPAIR SHOP REVEALED THAT BEARING FAILURE HAD OCCURRED; CAUSING CONSIDERABLE DAMAGE TO THE ENGINE. THE REPORTER ALSO STATED THAT OIL TEMPERATURE WAS STEADILY RISING PRIOR TO THE ONSET OF ENGINE RUMBLE.

Data retrieved from NASA's ASRS site as of May 2009 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.

Falcon 2000 captain at FL400 reports engine rumbling turning to an itt exceedance during descent and diversion.