# SDR HEEA127223

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 18, 2010
- Submitted: January 27, 2010
- Operation: Air carrier
- Aircraft: N612PH
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53199
- Aircraft time: 11,158 hours
- System (JASC): [5302 · Rotorcraft Tail Boom](https://openairdocs.org/jasc/5302)
- Part: Frame
- Part number: 407030819101
- Part serial: NA
- Condition: Cracked
- Location: Tailboom
- Component: Tailboom
- Component part number: 407030801205
- 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/HEEA127223

## Discrepancy

CRACKS FOUND IN LOWER FLANGE OF FRAME BETWEN LOWER LT AND RT TAILBOOM ATTACH FITTINGS/INTERCOSTALS.  CRACKS EXIST BETWEEN CONSECUTIVE RIVETS AT APPROX THE 5 O`CLOCK AND SEVEN O`CLOCK POSITION.  THE FLANGE OF THE CRACKED FRAME APPEARS TO HAVE MILLING MARKS AROUND THE COMPLETE CIRCUMFERENCE.  SENT FOR WARRANTY EXCHANGE.  RETURN TO BHT CPR/FI LAB INVESTIGATION AS PER BHT PSE ERIC PARENT REQUEST NR 2010010747.

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