# SDR DALA1128279875

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2011
- Submitted: April 25, 2011
- Operation: Air carrier
- Aircraft: N784NC
- 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: 48109
- Aircraft time: 71,726 hours, 65,746 cycles
- System (JASC): [5321 · Fuselage Floor Panel](https://openairdocs.org/jasc/5321)
- Part: Floor Panel
- Condition: Corroded
- Location: Fuselage
- 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/DALA1128279875

## Discrepancy

CABIN FLOOR PNL NR 37 HAS SURFACE CORROSION AT OTBD FASTENER HOLES.  REMOVED CORROSION REF SRM 51-10-3.  ORIG MATERIAL IS .020 REF SRM 53-23-0.  MAX ALLOWABLE MATERIAL LOSS IS .004 MATERIAL LOSS .007, OUT OF LIMITS, REF SRM 53-01, PG8 FIG 1.  REMOVED CHANNELS FROM WEB.  FABRICATED WEB IAW SRM 53-23-0 PG7  FIG 4.  TREATED IAW SRM 51-10-3, PG 40, PARA 21 & PRIMED SRM 51-10-3, PG31, PARA 14.  INST HAT CHANNELS REF 51-30-2.  INSTALLED IAW AMM 53-20-01-201-925A-A.

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