# SDR DALA2020022421346

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 21, 2020
- Submitted: February 24, 2020
- Operation: Air carrier
- Aircraft: N908DA
- Make and model: Doug MD-90-30
- Registry model: [Doug MD-90-30](https://openairdocs.org/model/mcdonnell-douglas-md-90-30) (OpenAirDocs)
- Aircraft serial: 53388
- Aircraft time: 63,141 hours, 34,883 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Condition: Corroded
- Location: Bs 720-740
- 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/DALA2020022421346

## Discrepancy

CORROSION ON L2 LOWER SILL INTERCOSTAL BTW STA 720/740 AND 63 LBL PASSENGER CABIN (W2) LOG-PAGE UPDATED SUMMARY OF NRC 00359 CORROSION LEVEL 2 LOWER SILL BTW STA 720/ 740, 63 LBL WAS REPLACED PER B757-200 SRM 51-40-02-0G PAR 4 AND 7 (1499637)

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