# SDR UIEA2010082200142

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 27, 2010
- Submitted: August 23, 2010
- Operation: Air carrier
- Aircraft: [N408MC](https://openairdocs.org/aircraft/N408MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29261
- Aircraft time: 46,092 hours, 7,161 cycles
- Engine: Ge CF680C2B1F
- System (JASC): [7810 · Engine Collector/Tailpipe/Nozzle](https://openairdocs.org/jasc/7810)
- Part: Nozzle
- Condition: Cracked
- Location: Exhaust
- 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/UIEA2010082200142

## Discrepancy

DURING MX WALK AROUND, MX FOUND (1EA) CRACK ON THE EXHAUST NOZZLE OUTER SLEEVE, STARTING AT APPROX THE 11 O'CLOCK POSITION. THE CIRCUMFERENTIAL CRACK IS APPROX 35.0 IN. LONG. IAW SRM 54-41-30 THE LENGTH OF THE CRACK IS OUT OF LIMITS.  DISPOSITION IS TO STOP DRILL THE ENDS OF THE CRACK WITH A 0.125 IN. DIAMETER HOLE (DRILL BIT); DVI EVERY 3 FLIGHT CYCLES; AND
REMOVAL OF THE PART PRIOR TO THE ACCUMULATION OF 25 FC (FLIGHT CYCLES) AFTER PART 1.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.