# SDR SIMA200921103

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 28, 2009
- Submitted: July 30, 2009
- Operation: Air carrier
- Aircraft: [N638AE](https://openairdocs.org/aircraft/N638AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145172
- Aircraft time: 22,766 hours, 22,048 cycles
- Engine: Allsn AE3007C
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Power Loss
- Location: Nr 2
- Stage of operation: CR
- How discovered: O
- Nature of condition: R
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA200921103

## Discrepancy

ON FLIGHT 3996 CREW REPORTED IN CRUISE ENGINE 2 ROLL BACK OCCURRED.  AIRCRAFT RETURNED TO CHA.  AIRCRAFT LANDED SAFELY.  AIRCRAFT REMOVED FROM SERVICE.  ISSUED MEL 78-1, PER FLIGHT DATA RECORDER, DATA READOUT TESTED ENGINE 2 THRUST REVERSER FADEC INTERFACE WIRING BETWEEN FADEC 2A AND 2B AND TR 2 STOW RELAYS AND ENGINE 2 RELAY RESISTOR MODULE FOR CONTINUITY INTERRUPTS WIRING MANUAL 78-31-55 AND 76-12-53 IAW SWPM 20-20-03.  NO DEFECTS NOTED.  ENGINE RUNS SATISFACTORY.  MEL STILL OPEN.  AIRCRAFT RETURNED TO SERVICE.

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