Narrative:

I was captain (pilot not flying) on a falcon 900EX. During the enroute climb at approximately FL270; we heard a loud thump; there was a brief airframe shudder; and a very slight yaw. As the climb continued; we both checked engine instruments and noted a slightly elevated itt; and a slight increase on the #1 engine vibration scale. There were no excessive indications and the engine oil temperature and pressure remained normal. The pilot flying reduced power on the #1 engine; took over radio communications and advised ATC of a potential engine problem and possible divert. I began afm checklist procedures for engine vibration. As the aircraft was leveled off and the thrust further reduced; the vibration became noticeable in the airframe. The engine was then secured using the engine failure inflight afm checklist. With the engine secured; we advised ATC of the situation; declared an emergency and requested divert to ZZZ. It was decided to declare the emergency because of the potential of unknown damage to the #1 engine and the possibility of additional loss of systems enroute. ZZZ was chosen because of the runway lengths and available emergency services. Center provided vectors and we prepared for the approach and landing. All briefings; emergency and normal checklists were completed. The arrival; approach and landing were uneventful. The service from ATC was excellent. At no time were deviations from fars required or requested.

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Original NASA ASRS Text

Title: A DA-900 experienced an engine failure on departure climb. The flight crew secured the engine; declared an emergency; and diverted to a nearby airport.

Narrative: I was Captain (pilot Not flying) on a Falcon 900EX. During the enroute climb at approximately FL270; we heard a loud thump; there was a brief airframe shudder; and a very slight yaw. As the climb continued; we both checked engine instruments and noted a slightly elevated ITT; and a slight increase on the #1 engine vibration scale. There were no excessive indications and the engine oil temperature and pressure remained normal. The Pilot Flying reduced power on the #1 engine; took over radio communications and advised ATC of a potential engine problem and possible divert. I began AFM checklist procedures for engine vibration. As the aircraft was leveled off and the thrust further reduced; the vibration became noticeable in the airframe. The engine was then secured using the engine failure inflight AFM checklist. With the engine secured; we advised ATC of the situation; declared an emergency and requested divert to ZZZ. It was decided to declare the emergency because of the potential of unknown damage to the #1 engine and the possibility of additional loss of systems enroute. ZZZ was chosen because of the runway lengths and available emergency services. Center provided vectors and we prepared for the approach and landing. All briefings; emergency and normal checklists were completed. The arrival; approach and landing were uneventful. The service from ATC was excellent. At no time were deviations from FARs required or requested.

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.