# SDR HEER20170513285

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2017
- Submitted: May 18, 2017
- Operation: Air carrier
- Aircraft: [N425PH](https://openairdocs.org/aircraft/N425PH), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53684
- Aircraft time: 7,468 hours
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Panel
- Part number: 407030401113
- Condition: Corroded
- Location: Fuselage
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HEER20170513285

## Discrepancy

FOUND CORROSION UNDER THE LT TRANSMISSION PYLON BEAM FORWARD SHIM STACK INTO THE TOP SURFACE OF THE BONDED DOUBLER.  THE AREA AFFECTED MEASURES APPROXIMATELY 1 3/4 INCHES LONG BY 2 1/4 INCHES WIDE WITH PITS AS DEEP AS 0.040.

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