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An MD82 in cruise at FL280 declared an emergency and diverted due to the inability to disconnect a failed right engine CSD.
| Attributes | |
| ACN | 502550 |
| Time | |
| Date | 200102 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : pit.airport |
| State Reference | PA |
| Altitude | msl single value : 28000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-82 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Route In Use | enroute airway : j91.airway |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : multi engine pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 12500 flight time type : 500 |
| ASRS Report | 502550 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 6000 flight time type : 500 |
| ASRS Report | 502552 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : generator drive light other flight crewa other flight crewb |
| Resolutory Action | flight crew : declared emergency flight crew : diverted to another airport |
| Consequence | other |
| Supplementary | |
| Problem Areas | Chart Or Publication Aircraft |
| Primary Problem | Aircraft |
Narrative:
The right CSD low oil pressure light illuminated with high temperatures. CSD was not successfully disconnected through use of QRH. Over concern of continued operation of the unit in a damaged state, the decision was made to return to ZZZ. An emergency was declared. The right engine was operated at idle while practicable on the advice of maintenance technician's help, and an overweight landing was performed. The QRH does not address this situation. It assumes the CSD will disconnect, but we continued to show 100 volts and 390 cps and high rise and outlet temperatures.
Original NASA ASRS Text
Title: AN MD82 IN CRUISE AT FL280 DECLARED AN EMER AND DIVERTED DUE TO THE INABILITY TO DISCONNECT A FAILED R ENG CSD.
Narrative: THE R CSD LOW OIL PRESSURE LIGHT ILLUMINATED WITH HIGH TEMPS. CSD WAS NOT SUCCESSFULLY DISCONNECTED THROUGH USE OF QRH. OVER CONCERN OF CONTINUED OP OF THE UNIT IN A DAMAGED STATE, THE DECISION WAS MADE TO RETURN TO ZZZ. AN EMER WAS DECLARED. THE R ENG WAS OPERATED AT IDLE WHILE PRACTICABLE ON THE ADVICE OF MAINT TECHNICIAN'S HELP, AND AN OVERWT LNDG WAS PERFORMED. THE QRH DOES NOT ADDRESS THIS SIT. IT ASSUMES THE CSD WILL DISCONNECT, BUT WE CONTINUED TO SHOW 100 VOLTS AND 390 CPS AND HIGH RISE AND OUTLET TEMPS.
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.