# SDR UIEA2010110900176

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 9, 2010
- Submitted: November 10, 2010
- Operation: Air carrier
- Aircraft: [N415MC](https://openairdocs.org/aircraft/N415MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 32837
- Aircraft time: 36,822 hours, 5,854 cycles
- Engine: Ge CF680
- System (JASC): [7810 · Engine Collector/Tailpipe/Nozzle](https://openairdocs.org/jasc/7810)
- Part: Sleeve
- Condition: Cracked
- Location: Exhaust Nozzle
- 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/UIEA2010110900176

## Discrepancy

DURING MX WALKAROUND OF MX FOUND A CRACK ON THE EXHAUST NOZZLE OUTER SLEEVE, APPROX THE 2 O'CLOCK POSITION ON THE NR2 ENGINE. THE CIRCUMFERENTIAL CRACK IS APPROX 2.25" LONG AND IS NEAR THE T/E OF THE NOZZLE. IAW SRM 54-41-30 THE LENGTH OF THE CRACK IS WITHIN LIMITS, BUT THE EDGE DISTANCE IS OUT OF LIMITS.(DISPOSITION IS TO STOP DRILL THE ENDS OF THE CRACKS WITH A 0.098" DIAMETER HOLE; DVI EVERY 3 FLIGHT CYCLES; AND REMOVAL OF THE PART WITHIN 50 FC (FLIGHT CYCLES).)

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