Narrative:

Climbing out of 30000 ft vibration compressor stall right engine. Engine went to flight idle. Egt, N1 N2 oil pressure, oil temperature, oil qty all appeared normal. Aircraft yawed right, performed engine securing checklist. Vibration ceased, declared emergency with center. Request clearance direct las. Requested descent. Advised dispatch and company. Returned to las. Had emergency equipment standby. Landed at 195000 pounds, landed uneventful. ZLA very helpful -- excellent job. Advised approach and tower at las we were returning with engine shutdown. Did not attempt to restart engine because of vibration. Engine parameters had looked good but felt not wise to do so with vibration we had. Vibration ceased when engine was secured. Landed at las on runway 25R. Requested with tower to use runway 25R because of aircraft weight for landing. While on final to las cleared for visual approach. When approximately 6 mi out tower advised aircraft on numbers departing. Emergency equipment standing by when approximately 4 mi out. Tower cleared another aircraft, air carrier X, into position. Did not feel that was good judgement with fact we had one engine shut down and emergency. Air carrier X departed ok, but if he had aborted or had some problem at last min would have had to clear runway. May not have cleared in time and would have caused us to do single-engine go around at heavy weight and high elevation airport. That could have been prevented. Did not see necessity to get that last aircraft airborne.

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Original NASA ASRS Text

Title: ACFT EQUIP PROB ON CLBOUT. ENG VIBRATION. ENG SHUTDOWN AND FLT RETURNED TO DEP ARPT.

Narrative: CLBING OUT OF 30000 FT VIBRATION COMPRESSOR STALL R ENG. ENG WENT TO FLT IDLE. EGT, N1 N2 OIL PRESSURE, OIL TEMP, OIL QTY ALL APPEARED NORMAL. ACFT YAWED R, PERFORMED ENG SECURING CHKLIST. VIBRATION CEASED, DECLARED EMER WITH CTR. REQUEST CLRNC DIRECT LAS. REQUESTED DSCNT. ADVISED DISPATCH AND COMPANY. RETURNED TO LAS. HAD EMER EQUIP STANDBY. LANDED AT 195000 LBS, LANDED UNEVENTFUL. ZLA VERY HELPFUL -- EXCELLENT JOB. ADVISED APCH AND TWR AT LAS WE WERE RETURNING WITH ENG SHUTDOWN. DID NOT ATTEMPT TO RESTART ENG BECAUSE OF VIBRATION. ENG PARAMETERS HAD LOOKED GOOD BUT FELT NOT WISE TO DO SO WITH VIBRATION WE HAD. VIBRATION CEASED WHEN ENG WAS SECURED. LANDED AT LAS ON RWY 25R. REQUESTED WITH TWR TO USE RWY 25R BECAUSE OF ACFT WT FOR LNDG. WHILE ON FINAL TO LAS CLRED FOR VISUAL APCH. WHEN APPROX 6 MI OUT TWR ADVISED ACFT ON NUMBERS DEPARTING. EMER EQUIP STANDING BY WHEN APPROX 4 MI OUT. TWR CLRED ANOTHER ACFT, ACR X, INTO POS. DID NOT FEEL THAT WAS GOOD JUDGEMENT WITH FACT WE HAD ONE ENG SHUT DOWN AND EMER. ACR X DEPARTED OK, BUT IF HE HAD ABORTED OR HAD SOME PROB AT LAST MIN WOULD HAVE HAD TO CLR RWY. MAY NOT HAVE CLRED IN TIME AND WOULD HAVE CAUSED US TO DO SINGLE-ENG GAR AT HVY WT AND HIGH ELEVATION ARPT. THAT COULD HAVE BEEN PREVENTED. DID NOT SEE NECESSITY TO GET THAT LAST ACFT AIRBORNE.

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.