# SDR ASAA2021050334949

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 3, 2021
- Submitted: June 1, 2021
- Operation: Air carrier
- Aircraft: [N553AS](https://openairdocs.org/aircraft/N553AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 34594
- Aircraft time: 51,729 hours, 17,804 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Door Sill
- Part number: 147A85407
- Condition: Corroded
- Location: Bs 907-1000
- 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/ASAA2021050334949

## Discrepancy

SPOT OF CORROSION LOCATED AT L2 DOOR LOWER SILL WEBB UPPER SURFACE LOCATED AT LBL 47 APPROX. STA. 987. AREA CIRCLED IN RED. GROUNDED - YES. REMOVED AND REPLACED L/H INNER CHORD IAW BOEING DWG, 147A8501 REV B REMOVED DOT AND RED MARKS.

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