# SDR DALA1135889866

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 20, 2011
- Submitted: May 24, 2011
- Operation: Air carrier
- Aircraft: N775NC
- Make and model: Doug DC-9-51
- Registry model: [Doug DC-9-51](https://openairdocs.org/model/mcdonnell-douglas-dc-9-51) (OpenAirDocs)
- Aircraft serial: 47785
- Aircraft time: 73,589 hours, 69,813 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Condition: Cracked
- Location: Main Deck
- 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/DALA1135889866

## Discrepancy

MAIN CABIN FLOOR PANEL 66 HAS 5EA HAT CHANNELS CRACKED.  REMOVED AND REPLACED 5 HAT CHANNELS IAW SRM 51-30-2.  UPON INSP FOUND 2 CRACKS.  CUTOUT DAMAGED AREA 2 INCH BY 1 1/2  INCH.  NDT HFEC INSP IAW NDT SPM06-10-01.  NO CRACKS NOTED.  FABRICATED  AND INSTALLED 1 DOUBLER AND 1 FILLER IAW SRM 53-23-00 FIG 5.  TAGGED REPAIR IAW PS 900-5-1 NR 4 P245.

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