# SDR TWAA9910301

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 13, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N981Z
- Make and model: Doug DC-9-31
- Registry model: [Doug DC-9-31](https://openairdocs.org/model/douglas-dc-9-31) (OpenAirDocs)
- Aircraft serial: 47345
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Condition: Corroded
- Location: Bs 937-950
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TWAA9910301

## Discrepancy

DURING OP 16 MAINT CHECK, FOUND INTERCOSTAL AT LONGERON 28R WITH INTERGRANULAR CORROSION BETWEEN STRINGER 937 AND 950. PART MADE PER DRAWING 9957723.  REPLACED INTERCOSTAL, INSTALLED WITH HI-LOKS, BECAUSE THEY WERE ORIGINAL FASTENER.

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