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Crj-200 flight crew rejects take off when they receive 'idg 2' and 'gen 2' off caution messages. Cause was traced to low idg oil quantity and acceleration effect during takeoff.
| Attributes | |
| ACN | 814810 |
| Time | |
| Date | 200812 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet 200 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : takeoff roll ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 814810 |
| Events | |
| Anomaly | aircraft equipment problem : less severe |
| Independent Detector | aircraft equipment other aircraft equipment : eicas |
| Resolutory Action | flight crew : rejected takeoff |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Advanced thrust for takeoff and first officer's pfd and mfd had a momentary interruption. We briefly noticed it but they came back and we continued accelerating. Just as I was setting the thrust we had an idg 2 caution message. I then rejected the takeoff. We notified ATC; cleared the runway; set the parking brake; and ran through the rejected takeoff QRH. The message that persisted was generator 2 off caution message. We ran through that QRH and the message went away. We made the calls to operations; maintenance; and ATC to return to the gate. The idg was later MEL'ed and we continued. From what we've been told; the oil lever in the #2 engine was at a low enough point that acceleration caused it to slosh backwards. This triggers the low oil level sensor for the idg and generator. This subsequently trips them off line.
Original NASA ASRS Text
Title: CRJ-200 FLIGHT CREW REJECTS TAKE OFF WHEN THEY RECEIVE 'IDG 2' AND 'GEN 2' OFF CAUTION MESSAGES. CAUSE WAS TRACED TO LOW IDG OIL QUANTITY AND ACCELERATION EFFECT DURING TAKEOFF.
Narrative: ADVANCED THRUST FOR TKOF AND FO'S PFD AND MFD HAD A MOMENTARY INTERRUPTION. WE BRIEFLY NOTICED IT BUT THEY CAME BACK AND WE CONTINUED ACCELERATING. JUST AS I WAS SETTING THE THRUST WE HAD AN IDG 2 CAUTION MESSAGE. I THEN REJECTED THE TKOF. WE NOTIFIED ATC; CLRED THE RWY; SET THE PARKING BRAKE; AND RAN THROUGH THE REJECTED TKOF QRH. THE MESSAGE THAT PERSISTED WAS GENERATOR 2 OFF CAUTION MESSAGE. WE RAN THROUGH THAT QRH AND THE MESSAGE WENT AWAY. WE MADE THE CALLS TO OPS; MAINT; AND ATC TO RETURN TO THE GATE. THE IDG WAS LATER MEL'ED AND WE CONTINUED. FROM WHAT WE'VE BEEN TOLD; THE OIL LEVER IN THE #2 ENG WAS AT A LOW ENOUGH POINT THAT ACCELERATION CAUSED IT TO SLOSH BACKWARDS. THIS TRIGGERS THE LOW OIL LEVEL SENSOR FOR THE IDG AND GENERATOR. THIS SUBSEQUENTLY TRIPS THEM OFF LINE.
Data retrieved from NASA's ASRS site as of May 2009 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.