# SDR CVGA20260207001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 6, 2026
- Submitted: February 7, 2026
- Operation: Air carrier
- Aircraft: [N918TX](https://openairdocs.org/aircraft/N918TX), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500223
- Aircraft time: 18,697 hours, 11,107 cycles
- Engine: Allsn AE3007C
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Coupling
- Condition: Leaking
- Location: Precooler
- Stage of operation: TO
- How discovered: O
- Nature of condition: B, J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CVGA20260207001

## Discrepancy

ABORTED TAKE OFF DUE TO A LEFT ENGINE PYLON BLEED LEAK CAS MESSAGE AND SMOKE IN THE COCKPIT/ CABIN.  UPON INVESTIGATION THE LT ENGINE OTBD PRECOOLER V-BAND COUPLING WAS LEAKING. REMOVED THEN REINSTALLED AND TORQUED IAW 750AMM20-10-40, CAL TOOL: JEG9133 DUE 4/22/2026. LEAK CHECKS GOOD AT THIS TIME. ACCOMPLISED HIGH POWER ENGINE RUNS IN REF TO C750 MM 71-00-04. NO DEFECTS NOTED. SMOKE IN THE COCKPIT. ACCOMPLISHED HIGH POWER ENGINE RUNS. IN REF TO C750MM71-00-04. NO DEFECTS NOTED.

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