Narrative:

I had just landed the embraer 145 regional twin jet with AE3007A engines. To slow aircraft, I used full reverse on both engines. I had just come out of reverse and headed for the high speed lane. The captain said something which I could not understand. I gave full control to the captain so he used the tiller and exited on the high speed. Tower said 'hold short of active parallel runway.' we stopped and I asked the captain what he said, and he said I had just lost an engine on landing. He said 'it was not big deal, it had occurred to him approximately 2 weeks ago.' he later said apparently after you come out of reverse that when the engines are at a low power thrust, they may fail. We contacted maintenance via the radio and grounded the aircraft xyz. Related information on jul/mon/98: I performed a test flight with my captain at XXX at the heavy maintenance facility and prior to the test flight the head a&P for air carrier said the aircraft we would test fly (xyz) had had an engine failure during his taxi. The a&P said all they could find were some bundled wires on the engine that had failed. The test flight was uneventful. I have since learned by talking with other pilots that air carrier has had approximately 15 engine failures in-flight or on the ground. Some were attributed to the breakdown of a carbon ring/seal in the engine, and many other in-flight were attributed to the full authority/authorized digital electronic control units which caused a false engine command shutdown. Right now I believe we are using version 6.1 full authority/authorized digital electron control on some engines due to the numerous engine shutdowns. It was rumored at one time that the FAA was close to grounding the entire fleet of 145's. I further believe the FAA is withholding life threatening information from the public and the pilots who fly the aircraft. I believe there are about now 200 in production and use. Callback conversation with reporter revealed the following information: the reporter stated the aircraft is pwred with 2 allison AE3007A engines with full authority/authorized digital electronic engine control units. The reporter said the engine spool down was caused by a full authority/authorized digital electronic control command of too low an engine idle and the engine just quit. The reporter stated the frequency of engine failures from several causes but mainly full authority/authorized digital electronic control commanded shutdowns are alarming and need correction. The reporter said several modifications have been made with no positive result. The reporter stated the aircraft is not equipped with any full authority/authorized digital electronic control override.

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Original NASA ASRS Text

Title: AN EMBRAER 145 ON LNDG ROLLOUT AND DURING UNREVERSING THE L ENG SPOOLED DOWN CAUSED BY THE FADEC COMMANDING TOO LOW A THRUST LEVEL.

Narrative: I HAD JUST LANDED THE EMBRAER 145 REGIONAL TWIN JET WITH AE3007A ENGS. TO SLOW ACFT, I USED FULL REVERSE ON BOTH ENGS. I HAD JUST COME OUT OF REVERSE AND HEADED FOR THE HIGH SPD LANE. THE CAPT SAID SOMETHING WHICH I COULD NOT UNDERSTAND. I GAVE FULL CTL TO THE CAPT SO HE USED THE TILLER AND EXITED ON THE HIGH SPD. TWR SAID 'HOLD SHORT OF ACTIVE PARALLEL RWY.' WE STOPPED AND I ASKED THE CAPT WHAT HE SAID, AND HE SAID I HAD JUST LOST AN ENG ON LNDG. HE SAID 'IT WAS NOT BIG DEAL, IT HAD OCCURRED TO HIM APPROX 2 WKS AGO.' HE LATER SAID APPARENTLY AFTER YOU COME OUT OF REVERSE THAT WHEN THE ENGS ARE AT A LOW PWR THRUST, THEY MAY FAIL. WE CONTACTED MAINT VIA THE RADIO AND GNDED THE ACFT XYZ. RELATED INFO ON JUL/MON/98: I PERFORMED A TEST FLT WITH MY CAPT AT XXX AT THE HVY MAINT FACILITY AND PRIOR TO THE TEST FLT THE HEAD A&P FOR ACR SAID THE ACFT WE WOULD TEST FLY (XYZ) HAD HAD AN ENG FAILURE DURING HIS TAXI. THE A&P SAID ALL THEY COULD FIND WERE SOME BUNDLED WIRES ON THE ENG THAT HAD FAILED. THE TEST FLT WAS UNEVENTFUL. I HAVE SINCE LEARNED BY TALKING WITH OTHER PLTS THAT ACR HAS HAD APPROX 15 ENG FAILURES INFLT OR ON THE GND. SOME WERE ATTRIBUTED TO THE BREAKDOWN OF A CARBON RING/SEAL IN THE ENG, AND MANY OTHER INFLT WERE ATTRIBUTED TO THE FULL AUTH DIGITAL ELECTRONIC CTL UNITS WHICH CAUSED A FALSE ENG COMMAND SHUTDOWN. RIGHT NOW I BELIEVE WE ARE USING VERSION 6.1 FULL AUTH DIGITAL ELECTRON CTL ON SOME ENGS DUE TO THE NUMEROUS ENG SHUTDOWNS. IT WAS RUMORED AT ONE TIME THAT THE FAA WAS CLOSE TO GNDING THE ENTIRE FLEET OF 145'S. I FURTHER BELIEVE THE FAA IS WITHHOLDING LIFE THREATENING INFO FROM THE PUBLIC AND THE PLTS WHO FLY THE ACFT. I BELIEVE THERE ARE ABOUT NOW 200 IN PRODUCTION AND USE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ACFT IS PWRED WITH 2 ALLISON AE3007A ENGS WITH FULL AUTH DIGITAL ELECTRONIC ENG CTL UNITS. THE RPTR SAID THE ENG SPOOL DOWN WAS CAUSED BY A FULL AUTH DIGITAL ELECTRONIC CTL COMMAND OF TOO LOW AN ENG IDLE AND THE ENG JUST QUIT. THE RPTR STATED THE FREQ OF ENG FAILURES FROM SEVERAL CAUSES BUT MAINLY FULL AUTH DIGITAL ELECTRONIC CTL COMMANDED SHUTDOWNS ARE ALARMING AND NEED CORRECTION. THE RPTR SAID SEVERAL MODIFICATIONS HAVE BEEN MADE WITH NO POSITIVE RESULT. THE RPTR STATED THE ACFT IS NOT EQUIPPED WITH ANY FULL AUTH DIGITAL ELECTRONIC CTL OVERRIDE.

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.