A hawker 400XP flight crew climbing out of FL210 noticed an abnormal left engine vibration. The crew...

Attributes
ACN	701806
Time
Date	200606
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : abi.airport
State Reference	TX
Altitude	msl single value : 21000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zfw.artcc
Operator	general aviation : corporate
Make Model Name	Beechjet 400
Operating Under FAR Part	Part 135
Navigation In Use	other
Flight Phase	climbout : vacating altitude
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 12000 flight time type : 100
ASRS Report	701806
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 75 flight time total : 2775 flight time type : 77
ASRS Report	701911
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : eng vib other flight crewa
Resolutory Action	flight crew : landed as precaution flight crew : diverted to another airport
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Shortly after departure from dfw during climb through FL210; the crew noticed an unusual airframe vibration. All engine indications were normal; however; an abnormal vibration meter reading on the left engine was noted. The vibration began to get slightly worse and could not be felt in the rudder pedals. Left engine vibration meter indicated 2.0 - 3.0 with peak indications of 3.5. The right engine vibration meter remained at 1.0 at all times. The crew made a call to the chief pilot and maintenance. A decision was made by the crew with input and guidance from the company to land at abi which was the closest suitable airport to our location. An uneventful landing was made and no emergency was declared.

Original NASA ASRS Text

Title: A HAWKER 400XP FLT CREW CLBING OUT OF FL210 NOTICED AN ABNORMAL L ENG VIBRATION. THE CREW DIVERTED TO ABI.

Narrative: SHORTLY AFTER DEP FROM DFW DURING CLB THROUGH FL210; THE CREW NOTICED AN UNUSUAL AIRFRAME VIBRATION. ALL ENG INDICATIONS WERE NORMAL; HOWEVER; AN ABNORMAL VIBRATION METER READING ON THE L ENG WAS NOTED. THE VIBRATION BEGAN TO GET SLIGHTLY WORSE AND COULD NOT BE FELT IN THE RUDDER PEDALS. L ENG VIBRATION METER INDICATED 2.0 - 3.0 WITH PEAK INDICATIONS OF 3.5. THE R ENG VIBRATION METER REMAINED AT 1.0 AT ALL TIMES. THE CREW MADE A CALL TO THE CHIEF PLT AND MAINT. A DECISION WAS MADE BY THE CREW WITH INPUT AND GUIDANCE FROM THE COMPANY TO LAND AT ABI WHICH WAS THE CLOSEST SUITABLE ARPT TO OUR LOCATION. AN UNEVENTFUL LNDG WAS MADE AND NO EMER WAS DECLARED.

Data retrieved from NASA's ASRS site as of January 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.

A hawker 400XP flight crew climbing out of FL210 noticed an abnormal left engine vibration. The crew diverted to abi.