# SDR NACA2023111300003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 13, 2023
- Submitted: November 18, 2023
- Operation: Air carrier
- Aircraft: N399CM
- Make and model: Boeing 767323
- Aircraft serial: 25451
- Aircraft time: 110,588 hours, 18,882 cycles
- Engine: Ge CF680C2B6
- Engine time: 10,893 hours, 3,301 cycles
- System (JASC): [5400 · Nacelle/Pylon Structure](https://openairdocs.org/jasc/5400)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NACA2023111300003

## Discrepancy

FOUND COUPLING OF COOLING DUCT AT 4 OCLOCK POSITION LOOSE. REMOVED AND REPLACED LPT COOLING DUCT AT 4 OCLOCK POSITION ON #1 ENGINE IAW AMMM 75-24-03

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