Narrative:

During climb out and just just prior to level off at fl410 with the throttles set to climb power; we got E2 tla fail amber cas msg. The QRH says: 'condition: associated engine thrust control is lost. The engine thrust will be set to idle automatically.' fuel balance...................... Monitor when appropriate: one engine inoperative approach and landing procedure (NAP1-21).............. Accomplish end'after level off we pulled the throttles back to cruise at the normal time and they both responded normally. We called and did a conference with maintenance. I wanted to know when the engine was going to roll back to idle. We were out over water and I wanted to use the engine as long as possible and didn't want to be surprised when it rolled back. Maintenance didn't know if or when the engine would roll back or if there was a timer associated with this malfunction.we decided to continue on as long as the engine was performing normally and maintenance would research my timer question and get back to me. I never heard back from them but the engine performed normally throughout the remainder of the flight and the cas message stayed illuminated until shutdown. We read through the manuals and found little to nothing that addressed this issue. It appears that there are two sensors in the throttle quadrant and both of them need to fail before the engine goes to idle. Is that 2 sensors for each throttle or 2 total?

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Original NASA ASRS Text

Title: Embraer Legacy 450/500 flight crew experienced an engine control malfunction; but the engine continued to operate normally.

Narrative: During climb out and just just prior to level off at fl410 with the throttles set to climb power; we got E2 TLA FAIL Amber CAS msg. The QRH says: 'CONDITION: Associated engine thrust control is lost. The engine thrust will be set to idle automatically.' Fuel Balance...................... MONITOR When appropriate: ONE ENGINE INOPERATIVE APPROACH AND LANDING Procedure (NAP1-21).............. ACCOMPLISH END'After level off we pulled the throttles back to cruise at the normal time and they both responded normally. We called and did a conference with maintenance. I wanted to know when the engine was going to roll back to idle. We were out over water and I wanted to use the engine as long as possible and didn't want to be surprised when it rolled back. Maintenance didn't know if or when the engine would roll back or if there was a timer associated with this malfunction.We decided to continue on as long as the engine was performing normally and maintenance would research my timer question and get back to me. I never heard back from them but the engine performed normally throughout the remainder of the flight and the CAS MSG stayed illuminated until shutdown. We read through the manuals and found little to nothing that addressed this issue. It appears that there are two sensors in the throttle quadrant and both of them need to fail before the engine goes to idle. Is that 2 sensors for each throttle or 2 total?

Data retrieved from NASA's ASRS site 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.