# SDR QR9R2023081700002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 17, 2023
- Submitted: August 17, 2023
- Operation: General aviation
- Filed by: [M1 Support Services, repair station QR9R369D](https://openairdocs.org/faa-repair-station/QR9R369D/m1-support-services.md) (OpenAirDocs)
- Make and model: Bolkms BK117C2
- Aircraft serial: 10721329358
- Aircraft time: 3,401 hours
- System (JASC): [7700 · Engine Indicating System](https://openairdocs.org/jasc/7700)
- Part: Thermocouple
- Part number: 0177887050
- Part serial: 117MA
- Condition: Failed
- Location: Unknown
- Stage of operation: TX
- How discovered: V
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QR9R2023081700002

## Discrepancy

DURING FLIGHT #1, FLI DEGRADED MESSAGE IN CAD FOR #2 ENG WITH TOT INDICATION. A SUBSEQUENT T/F EVAL REVEALED #2 ENGINE WOULD NOT START, NO RISE IN TOT. N1 WOULD INCREASE. 3 START ATTEMPTS PERFORMED. TOT STAYED AT 45-50 DEGREES AND N1 WOULD INCREASE TO AROUND 30% BEFORE ABORTING THE START FOR NO INCREASE IN TOT. FLI DEGRADE APPEARED DURING 3RD START. REPLACED #2 ENGINE THERMOCOUPLE JUNCTION BOX IAW 77-22-00-900-8-02-A01. MTF MOC COMPLETED, BOTH ENGINES STARTED NORMALLY.

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