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Medium large transport flight approximately 15 minutes away from departure airport had high CSD temperature that would not reduce after disconnect. Flight returned to departure airport, landing overweight.
| Attributes | |
| ACN | 110593 |
| Time | |
| Date | 198905 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : phx |
| State Reference | AZ |
| Altitude | agl bound lower : 0 agl bound upper : 18000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zab |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude descent other landing other |
| Route In Use | arrival other departure other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 10000 flight time type : 1000 |
| ASRS Report | 110593 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : unable |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
During climb out I had a CSD oil temperature high warning in the #1 engine--checked temperature indicator and found needle to be fully deflected to the right indicating maximum temperature overheat. Disconnected the CSD from the generator, called for the checklist. Then found that the temperature would not come down, that my backup source of electricity was now my primary source for the left side and it was snowing at my destination airport and I would need to have more fuel on board for being able to get to a reasonable alternate airport if I were to lose another generator. I chose to return to phx, which was my airport of departure to have work performed since I was only 15 mins away. I was required to make an overweight landing and noted this in the log book. Because it was a smooth T/D on landing it only required a minimum inspection of landing gear and tires. I did not feel it was necessary to declare an emergency.
Original NASA ASRS Text
Title: MLG FLT APPROX 15 MINUTES AWAY FROM DEP ARPT HAD HIGH CSD TEMPERATURE THAT WOULD NOT REDUCE AFTER DISCONNECT. FLT RETURNED TO DEP ARPT, LNDG OVERWEIGHT.
Narrative: DURING CLBOUT I HAD A CSD OIL TEMP HIGH WARNING IN THE #1 ENG--CHKED TEMP INDICATOR AND FOUND NEEDLE TO BE FULLY DEFLECTED TO THE RIGHT INDICATING MAX TEMP OVERHEAT. DISCONNECTED THE CSD FROM THE GENERATOR, CALLED FOR THE CHKLIST. THEN FOUND THAT THE TEMP WOULD NOT COME DOWN, THAT MY BACKUP SOURCE OF ELECTRICITY WAS NOW MY PRIMARY SOURCE FOR THE LEFT SIDE AND IT WAS SNOWING AT MY DEST ARPT AND I WOULD NEED TO HAVE MORE FUEL ON BOARD FOR BEING ABLE TO GET TO A REASONABLE ALTERNATE ARPT IF I WERE TO LOSE ANOTHER GENERATOR. I CHOSE TO RETURN TO PHX, WHICH WAS MY ARPT OF DEP TO HAVE WORK PERFORMED SINCE I WAS ONLY 15 MINS AWAY. I WAS REQUIRED TO MAKE AN OVERWEIGHT LNDG AND NOTED THIS IN THE LOG BOOK. BECAUSE IT WAS A SMOOTH T/D ON LNDG IT ONLY REQUIRED A MINIMUM INSPECTION OF LNDG GEAR AND TIRES. I DID NOT FEEL IT WAS NECESSARY TO DECLARE AN EMER.
Data retrieved from NASA's ASRS site as of August 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.