# SDR P5CA2011090900465

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 9, 2011
- Submitted: September 9, 2011
- Operation: Air carrier
- Aircraft: [N452PA](https://openairdocs.org/aircraft/N452PA), registered now
- Make and model: Boeing 747-46NF
- Registry model: [Boeing 747-46NF](https://openairdocs.org/model/boeing-747-46nf) (OpenAirDocs)
- Aircraft serial: 30810
- Aircraft time: 47,355 hours, 7,732 cycles
- System (JASC): [7110 · Engine Cowling System](https://openairdocs.org/jasc/7110)
- Part: Skin
- Condition: Cracked
- Location: Nr 4 Cowling
- 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/P5CA2011090900465

## Discrepancy

NR 4 ENGINE RT CORE COWL OUTER SKIN HAS A 1 INCH CRACK UNDER PRE-COOLER EXHAUST DUCT.  RT CORE COWL OUTER SKIN STOP DRILLED AS PER EO 4471A007 (FAA FORM 8110-3 DATED 08 SEPTEMBER 2011 ISSUED) WITH DVI AT EVERY CYCLE.  PERMANENT REPAIR TO BE ACCOMPLISHED   WITHIN 20 CYCLES &NBSP).

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