Narrative:

We were a scheduled flight dtw-roc. As we started our descent the right generator inoperative-xtie lockout, right AC bus off annunciator lights illuminated. Left side of cockpit went dark. While running the checklist, the aircraft began vibrating. At first the vibration was minor, then quickly became severe. The right start valve annunciator illumination and pressurization outflow valve drove full closed. I shut right engine down, declared emergency with the ZOB, and requested immediate vectors to buf. ATC controllers at cle, approach control, and buf tower were superb. Suspecting possible damage, we delayed landing to run checks but ATC cooperated fully. The approach and landing were in VFR conditions. Supplemental information from acn 297650: dc-9-30 experienced right generator failure and AC bus lockout. Started APU to regain normal electrical power. Subsequently felt aircraft vibration accompanied by start vale open indication and right engine. Secured right engine and got vectors to buffalo while completing emergency checklist and landed without incident in buffalo. Postflt revealed damaged cconstant speed drive and generator unit. On next day, unrelated flight, found aircraft to be leaking constant speed drive fluid out of right engine. Flight was canceled for maintenance delay.

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Original NASA ASRS Text

Title: R ENG FAILED, SEVERE VIBRATION, SHUT DOWN R ENG, DECLARED EMER, DIVERTED TO CLOSEST ARPT FOR EMER LNDG.

Narrative: WE WERE A SCHEDULED FLT DTW-ROC. AS WE STARTED OUR DSCNT THE R GENERATOR INOP-XTIE LOCKOUT, R AC BUS OFF ANNUNCIATOR LIGHTS ILLUMINATED. L SIDE OF COCKPIT WENT DARK. WHILE RUNNING THE CHKLIST, THE ACFT BEGAN VIBRATING. AT FIRST THE VIBRATION WAS MINOR, THEN QUICKLY BECAME SEVERE. THE R START VALVE ANNUNCIATOR ILLUMINATION AND PRESSURIZATION OUTFLOW VALVE DROVE FULL CLOSED. I SHUT R ENG DOWN, DECLARED EMER WITH THE ZOB, AND REQUESTED IMMEDIATE VECTORS TO BUF. ATC CTLRS AT CLE, APCH CTL, AND BUF TWR WERE SUPERB. SUSPECTING POSSIBLE DAMAGE, WE DELAYED LNDG TO RUN CHKS BUT ATC COOPERATED FULLY. THE APCH AND LNDG WERE IN VFR CONDITIONS. SUPPLEMENTAL INFO FROM ACN 297650: DC-9-30 EXPERIENCED R GENERATOR FAILURE AND AC BUS LOCKOUT. STARTED APU TO REGAIN NORMAL ELECTRICAL PWR. SUBSEQUENTLY FELT ACFT VIBRATION ACCOMPANIED BY START VALE OPEN INDICATION AND R ENG. SECURED R ENG AND GOT VECTORS TO BUFFALO WHILE COMPLETING EMER CHKLIST AND LANDED WITHOUT INCIDENT IN BUFFALO. POSTFLT REVEALED DAMAGED CCONSTANT SPD DRIVE AND GENERATOR UNIT. ON NEXT DAY, UNRELATED FLT, FOUND ACFT TO BE LEAKING CONSTANT SPD DRIVE FLUID OUT OF R ENG. FLT WAS CANCELED FOR MAINT DELAY.

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.