A flight crew experienced high engine vibration. They shut down the engine; declared an emergency; a...

Narrative:

Aircraft confign -- clean; 280 IAS; 2000 FPM descent rate; autoplt engaged. Flight conditions: smooth air VMC; during descent from a cruise altitude of FL372 FL220. Flight to ZZZ between FL240 and FL220 an intermediate vibration was felt by both the crew and passenger. We leveled off at 22000 ft the captain increase the speed to 300 KTS. There was no change in noise or vibration. The vibration was intermittent; we then tried reducing speed to 230 KTS no change in vibration. Passenger confirmed the vibration. I got out of my seat and went to the cabin to look at the flight controls and engine; I used this time to brief our passenger that we were troubleshooting the vibration problem and intended to land at ZZZ airport or nearest suitable airport as soon as we can identify the problem. Captain turned off the engine synchronizer and split the throttles. I confirm the right engine cowling was vibrating. I returned to my seat and the flight crew completed the abnormal indication or behavior checklist; these procedures led us to this section high engine vibration the flight crew followed the steps and then came to the recommendation outlined in the checklist carry out engine failure procedures. At XA48Z we declared an emergency. We were about 11 mi south of ZZZ1 VOR; less than 50 mi from ZZZ when we completed the shutdown procedure checklist when ZZZ2 center switched us to date an approach. We completed the engine shutdown according to the recommendations and procedures prescribed in the hawker abnormal indication or behavior checklist. Upon completion of the shutdown the vibration was eliminated. The flight crew believes ZZZ was the most suitable airport. Aircraft was overweight and it would have required too high workload to divert to ZZZ3. It was safer to take our time and complete all the appropriate checklists. ATC was informed 3 souls onboard; 4000 pounds of fuel; estimated time of arrival 12 min. Crew had ATIS for ZZZ recorded and the approach plates pulled. The ILS approach was already briefed. ZZZ was VFR. ATC authority/authorized direct ZZZ at XC06Z we completed an uneventful landing at ZZZ. Crash fire rescue equipment was standing by. Aircraft taxi under its own power.

Original NASA ASRS Text

Title: A FLT CREW EXPERIENCED HIGH ENG VIBRATION. THEY SHUT DOWN THE ENG; DECLARED AN EMER; AND DETERMINED THEIR ORIGINAL DEST WAS SUITABLE FOR LNDG.

Narrative: ACFT CONFIGN -- CLEAN; 280 IAS; 2000 FPM DSCNT RATE; AUTOPLT ENGAGED. FLT CONDITIONS: SMOOTH AIR VMC; DURING DSCNT FROM A CRUISE ALT OF FL372 FL220. FLT TO ZZZ BTWN FL240 AND FL220 AN INTERMEDIATE VIBRATION WAS FELT BY BOTH THE CREW AND PAX. WE LEVELED OFF AT 22000 FT THE CAPT INCREASE THE SPD TO 300 KTS. THERE WAS NO CHANGE IN NOISE OR VIBRATION. THE VIBRATION WAS INTERMITTENT; WE THEN TRIED REDUCING SPD TO 230 KTS NO CHANGE IN VIBRATION. PAX CONFIRMED THE VIBRATION. I GOT OUT OF MY SEAT AND WENT TO THE CABIN TO LOOK AT THE FLT CTLS AND ENG; I USED THIS TIME TO BRIEF OUR PAX THAT WE WERE TROUBLESHOOTING THE VIBRATION PROB AND INTENDED TO LAND AT ZZZ ARPT OR NEAREST SUITABLE ARPT AS SOON AS WE CAN IDENT THE PROB. CAPT TURNED OFF THE ENG SYNCHRONIZER AND SPLIT THE THROTTLES. I CONFIRM THE R ENG COWLING WAS VIBRATING. I RETURNED TO MY SEAT AND THE FLT CREW COMPLETED THE ABNORMAL INDICATION OR BEHAVIOR CHKLIST; THESE PROCS LED US TO THIS SECTION HIGH ENG VIBRATION THE FLT CREW FOLLOWED THE STEPS AND THEN CAME TO THE RECOMMENDATION OUTLINED IN THE CHKLIST CARRY OUT ENG FAILURE PROCS. AT XA48Z WE DECLARED AN EMER. WE WERE ABOUT 11 MI S OF ZZZ1 VOR; LESS THAN 50 MI FROM ZZZ WHEN WE COMPLETED THE SHUTDOWN PROC CHKLIST WHEN ZZZ2 CTR SWITCHED US TO DATE AN APCH. WE COMPLETED THE ENG SHUTDOWN ACCORDING TO THE RECOMMENDATIONS AND PROCS PRESCRIBED IN THE HAWKER ABNORMAL INDICATION OR BEHAVIOR CHKLIST. UPON COMPLETION OF THE SHUTDOWN THE VIBRATION WAS ELIMINATED. THE FLT CREW BELIEVES ZZZ WAS THE MOST SUITABLE ARPT. ACFT WAS OVERWT AND IT WOULD HAVE REQUIRED TOO HIGH WORKLOAD TO DIVERT TO ZZZ3. IT WAS SAFER TO TAKE OUR TIME AND COMPLETE ALL THE APPROPRIATE CHKLISTS. ATC WAS INFORMED 3 SOULS ONBOARD; 4000 LBS OF FUEL; ESTIMATED TIME OF ARR 12 MIN. CREW HAD ATIS FOR ZZZ RECORDED AND THE APCH PLATES PULLED. THE ILS APCH WAS ALREADY BRIEFED. ZZZ WAS VFR. ATC AUTH DIRECT ZZZ AT XC06Z WE COMPLETED AN UNEVENTFUL LNDG AT ZZZ. CFR WAS STANDING BY. ACFT TAXI UNDER ITS OWN PWR.

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.

Attributes
ACN	704837
Time
Date	200607
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl bound lower : 22000 msl bound upper : 24000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	general aviation : corporate
Make Model Name	BAe 125 Series 800
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	descent : intermediate altitude descent : vacating altitude
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : cfi pilot : atp
Experience	flight time last 90 days : 90 flight time total : 6800 flight time type : 180
ASRS Report	704837
Person 2
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

A flight crew experienced high engine vibration. They shut down the engine; declared an emergency; and determined their original destination was suitable for landing.