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An emb-145 captain rejected the takeoff after the EICAS alerted E2 attcs no margin meaning the alternate takeoff thrust control system (attcs) has no margin for itt or N2 to attain higher thrust should it be triggered.
| Attributes | |
| ACN | 1094472 |
| Time | |
| Date | 201306 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 145 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Other Rejected Takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
We got a message on the EICAS at approximately 60 knots. E2 attcs no margin. After evaluating the message we aborted the takeoff. We were still at a comfortable speed for the reject and were able to slow down to taxi speed about halfway down the runway without hard braking. We decided to taxi clear of the runway to complete the checklists. Flight attendant did not report any problems in the cabin so we taxied back to the gate. There was an added threat. Engine 2 had an MEL on it already with a few associated messages. This slowed down my reaction time slightly. We did brief the possible associated messages due to the MEL but it still made me 'think' at a time when time could be critical. I guess I could have memorized these possible messages better so I could react faster on a message that was not associated.
Original NASA ASRS Text
Title: An EMB-145 Captain rejected the takeoff after the EICAS alerted E2 ATTCS NO MARGIN meaning the Alternate Takeoff Thrust Control System (ATTCS) has no margin for ITT or N2 to attain higher thrust should it be triggered.
Narrative: We got a message on the EICAS at approximately 60 knots. E2 ATTCS NO MARGIN. After evaluating the message we aborted the takeoff. We were still at a comfortable speed for the reject and were able to slow down to taxi speed about halfway down the runway without hard braking. We decided to taxi clear of the runway to complete the checklists. Flight Attendant did not report any problems in the cabin so we taxied back to the gate. There was an added threat. Engine 2 had an MEL on it already with a few associated messages. This slowed down my reaction time slightly. We did brief the possible associated messages due to the MEL but it still made me 'think' at a time when time could be critical. I guess I could have memorized these possible messages better so I could react faster on a message that was not associated.
Data retrieved from NASA's ASRS site as of July 2013 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.