# SDR AALA2009021100063

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 23, 2009
- Submitted: February 20, 2009
- Operation: Air carrier
- Aircraft: N9420D
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 49824
- Aircraft time: 50,891 hours, 32,355 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Cusp Web
- Condition: Corroded
- Location: Zone 100
- 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/AALA2009021100063

## Discrepancy

BOTTOM SIDE OF LEFT CUSP CORRODED STATION 1032.  INSTALLED CUSP DOUBLER PER AARD 53-20-00-16.  AREA OF DISCREPANCY IS 4 INCHES BY 10 INCHES.

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