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An MD80 in cruise had the left CSD low oil pressure warning light on steady with voltage and frequency fluctuating. Switched to APU generator.
| Attributes | |
| ACN | 545133 |
| Time | |
| Date | 200204 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : bwg.airport |
| State Reference | KY |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zme.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 545133 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : left csd low press light other flight crewa other flight crewb |
| Resolutory Action | flight crew : overcame equipment problem |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Approximately 1/2 way into the flight, left CSD oil pressure low light began to flicker. Started APU and monitored CSD oil temperature and generator frequency. After approximately 10 mins, the CSD oil pressure low light illuminated steady. Continued to monitor CSD oil temperature and generator frequency. After approximately another 10 mins the left generator frequency began to fluctuate and became unstable. Placed left APU buss switch on and left generator switch off. Continued to monitor CSD oil temperature throughout the remainder of the flight. CSD oil temperature remained below the red line, therefore, a CSD disconnect was not necessary as per the operating manual.
Original NASA ASRS Text
Title: AN MD80 IN CRUISE HAD THE L CSD LOW OIL PRESSURE WARNING LIGHT ON STEADY WITH VOLTAGE AND FREQ FLUCTUATING. SWITCHED TO APU GENERATOR.
Narrative: APPROX 1/2 WAY INTO THE FLT, L CSD OIL PRESSURE LOW LIGHT BEGAN TO FLICKER. STARTED APU AND MONITORED CSD OIL TEMP AND GENERATOR FREQ. AFTER APPROX 10 MINS, THE CSD OIL PRESSURE LOW LIGHT ILLUMINATED STEADY. CONTINUED TO MONITOR CSD OIL TEMP AND GENERATOR FREQ. AFTER APPROX ANOTHER 10 MINS THE L GENERATOR FREQ BEGAN TO FLUCTUATE AND BECAME UNSTABLE. PLACED L APU BUSS SWITCH ON AND L GENERATOR SWITCH OFF. CONTINUED TO MONITOR CSD OIL TEMP THROUGHOUT THE REMAINDER OF THE FLT. CSD OIL TEMP REMAINED BELOW THE RED LINE, THEREFORE, A CSD DISCONNECT WAS NOT NECESSARY AS PER THE OPERATING MANUAL.
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.