# SDR TWAA0006603

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 24, 2000
- Submitted: April 28, 2000
- Operation: Air carrier
- Aircraft: N984Z
- Make and model: Doug DC-9-31
- Registry model: [Doug DC-9-31](https://openairdocs.org/model/douglas-dc-9-31) (OpenAirDocs)
- Aircraft serial: 47412
- Aircraft time: 71,673 hours, 81,088 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Longeron
- 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/TWAA0006603

## Discrepancy

DURING OP 16 MAINT CHECK IN RT CANTED KEEL AREA, CORROSION WAS FOUND ON AND UNDER LONGERON 27R, FROM STA 604 TO 634.  REMOVED SURFACE CORROSION PER SPM 6-80-01 AND PAINTED FOR CORROSION PROTECTION PER SRM 51-10-3.

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