# SDR TWAA0009305

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 7, 2000
- Submitted: June 14, 2000
- Operation: Air carrier
- Aircraft: [N9409F](https://openairdocs.org/aircraft/N9409F), registered now
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 53121
- Aircraft time: 22,081 hours, 11,316 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Threshold
- Condition: Corroded
- Location: Cargo Bay
- 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/TWAA0009305

## Discrepancy

DURING CHECK-C MAINT, FOUND CORROSION IN AFT CARGO THRESHOLD PLATE, STA 1212.  REMOVED CORROSION PER SPM 6-80-01 PAGE 1 ITEMS 3A AND B, AND PAGE 2 AND 3.  REPAIRED PER SRM 53-01 FIG 4 SHEET 3, AND ARA 16728A DATED 5-26-00, SRM 51-60-0 PAGE 36, SRM 51-60-0 PAGE 8.  CORROSION TREATED PARTS PER SRM 51 AND DRAWING 5910085 AND 5930483.

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