# SDR 2023FA0000658

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 22, 2023
- Submitted: October 22, 2023
- Operation: General aviation
- Aircraft: [N278CM](https://openairdocs.org/aircraft/N278CM), registered now
- Make and model: Boeing 767-38E
- Registry model: [Boeing 767-38E](https://openairdocs.org/model/boeing-767-38e) (OpenAirDocs)
- Aircraft serial: 25404
- Aircraft time: 117,624 hours, 25,169 cycles
- System (JASC): [5100 · Standard Practices/Structures](https://openairdocs.org/jasc/5100)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: IN
- How discovered: V
- Nature of condition: Z
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2023FA0000658

## Discrepancy

DURING AIRCRAFT CARGO CONVERSION FROM PASSENGER TO FREIGHTER, AIRCRAFT MAINTENANCE DISCOVERED (2 EA) DENTS IN THE OUTER SLEEVE SKIN OF THE #2 ENGINE PRIMARY EXHAUST NOZZLE LOCATED BETWEEN NAC STA 335.2 AND NAC STA 348.94 BETWEEN THE 3 TO 4 O’CLOCK POSITION.                                                                    THE FIRST DENT NRC M0544 CONSISTS OF 10 CLOSELY SPACED DENTS BETWEEN NAC STA 348.94 TO NAC STA 344.13 WITH RATIO DEPTHS RANGING FROM A=0.35 Y=0.022 A/Y=15 TO A=0.22 Y=0.004 A/Y=55.                                                                                                                          THE SECOND DENT NRC M0545 IS LOCATED AT NAC STA 335.2 AT THE 3 O’CLOCK POSITION MEASURING A=0.34 Y=0.012 A/Y=28. BOTH DENTS WERE EVALUATED PER REF /B/ AND FOUND TO EXCEED ACCEPTABLE PUBLISHED LIMITS.

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