Narrative:

Climbing out of 1500 ft, generator #2 caution message came on. Followed QRH -- reset generator #2 would not reset. Turned generator #2 off. APU was on, continued running. At FL310, APU oil pressure caution message came on. Ran QRH procedures and was informed to divert into myr and diverted. Maintenance came out and checked the APU oil. There was a little oil on the check stick and found a trace which really surprised him, since he said if any registers at all no sensor would be effected. Since we were down to 1 generator and the APU, and after touchdown the APU would shut down automatically with these electric airplanes, that there needs to be redundancy. Callback conversation with reporter revealed the following information: the reporter stated the #2 AC generator failed shortly after takeoff and the #2 bus was pwred by APU generator. The reporter said when the APU low oil pressure warning light illuminated, it looked like they would be down to 1 generator. The reporter stated the APU unit with low oil pressure or low oil quantity will not automatic shutdown with low levels in flight only on landing. The reporter said when the oil was checked on the ground, only a small trace of oil was on the stick. The reporter stated the fix for the #2 generator was not known as maintenance does not advise the flight crew unless requested. The reporter said the electrical system on the CL65 is a reliable system with little or no trouble.

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Original NASA ASRS Text

Title: A CANADAIR CL65 IN CRUISE AT FL310 DIVERTED DUE TO APU LOW OIL PRESSURE WARNING AND #2 GENERATOR PREVIOUSLY DISCONNECTED.

Narrative: CLBING OUT OF 1500 FT, GENERATOR #2 CAUTION MESSAGE CAME ON. FOLLOWED QRH -- RESET GENERATOR #2 WOULD NOT RESET. TURNED GENERATOR #2 OFF. APU WAS ON, CONTINUED RUNNING. AT FL310, APU OIL PRESSURE CAUTION MESSAGE CAME ON. RAN QRH PROCS AND WAS INFORMED TO DIVERT INTO MYR AND DIVERTED. MAINT CAME OUT AND CHKED THE APU OIL. THERE WAS A LITTLE OIL ON THE CHK STICK AND FOUND A TRACE WHICH REALLY SURPRISED HIM, SINCE HE SAID IF ANY REGISTERS AT ALL NO SENSOR WOULD BE EFFECTED. SINCE WE WERE DOWN TO 1 GENERATOR AND THE APU, AND AFTER TOUCHDOWN THE APU WOULD SHUT DOWN AUTOMATICALLY WITH THESE ELECTRIC AIRPLANES, THAT THERE NEEDS TO BE REDUNDANCY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE #2 AC GENERATOR FAILED SHORTLY AFTER TKOF AND THE #2 BUS WAS PWRED BY APU GENERATOR. THE RPTR SAID WHEN THE APU LOW OIL PRESSURE WARNING LIGHT ILLUMINATED, IT LOOKED LIKE THEY WOULD BE DOWN TO 1 GENERATOR. THE RPTR STATED THE APU UNIT WITH LOW OIL PRESSURE OR LOW OIL QUANTITY WILL NOT AUTO SHUTDOWN WITH LOW LEVELS IN FLT ONLY ON LNDG. THE RPTR SAID WHEN THE OIL WAS CHKED ON THE GND, ONLY A SMALL TRACE OF OIL WAS ON THE STICK. THE RPTR STATED THE FIX FOR THE #2 GENERATOR WAS NOT KNOWN AS MAINT DOES NOT ADVISE THE FLC UNLESS REQUESTED. THE RPTR SAID THE ELECTRICAL SYS ON THE CL65 IS A RELIABLE SYS WITH LITTLE OR NO TROUBLE.

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.