# SDR COEA0712903

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 9, 2007
- Submitted: June 29, 2007
- Operation: Air carrier
- Aircraft: [N903FX](https://openairdocs.org/aircraft/N903FX), registered now
- Make and model: Aerosp ATR 42-320
- Registry model: [Aerosp ATR 42-320](https://openairdocs.org/model/aerospatiale-aeritalia-atr-42-320) (OpenAirDocs)
- Aircraft serial: 179
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Bulkhead
- Part number: S53572601206
- Condition: Cracked
- Location: Fuselage
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/COEA0712903

## Discrepancy

DURING HEAVY CHECK, FOUND CRACK ON FRAME 25 LT AND RT OUTBOARD LOWER SIDE OF HYDRAULIC LINE CUTOUT.  MAINTENANCE FOUND SB ATR42-53-0120 HAD BEEN PREVIOUSLY COMPLIED WITH.  COMPLIED WITH SB ATR42-53-0121 ON BOTH LT AND RT SIDES FOR FRAME 25 HYDRAULIC LINES CUT OUT.  VERIFIED CRACKS HAD NOT EXTENDED FURTHER PAST PREVIOUSLY COLD WORKED STOP DRILLED HOLES.  (M)

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