# SDR 2026F00042

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2026
- Submitted: March 19, 2026
- Operation: General aviation
- Aircraft: [N403PH](https://openairdocs.org/aircraft/N403PH), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53267
- Aircraft time: 13,935 hours, 77,844 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Part number: 407030401113
- Condition: Cracked
- Location: Zone 200
- Part time: 13,935 hours, 77,844 cycles
- 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/2026F00042

## Discrepancy

THE MECHANIC WAS COMPLYING WITH THE ZONE 3 TRANSMISSION INSPECTION WHEN HE FOUND THE CRACK.  IT WAS FOUND BECAUSE OF BLACK OIL AROUND THE AREA. HE CLEANED THE AREA AND COMPLETED A DYE PENETRANT INSPECTION TO VERIFY THE CRACK. THE CRACK LENGTH IS 2", LOCATED AT THE RH FORWARD TRANSMISSION PYLON BEAM.

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