# SDR U972009F00000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 6, 2009
- Submitted: June 2, 2009
- Operation: Air carrier
- Aircraft: [N3006](https://openairdocs.org/aircraft/N3006), registered now
- Make and model: Doug DC3
- Registry model: [Doug DC3](https://openairdocs.org/model/douglas-dc3) (OpenAirDocs)
- Aircraft serial: 42961
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Part serial: 42961
- Condition: Cracked
- Location: Center Wing
- Part time: 12,706 hours
- 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/U972009F00000

## Discrepancy

CRACKS APPROX 4 INCHES IN LENGTH WERE DETECTED VISUALLY ON THE UPPER RETURN OF CTR WING RIBS AT STA 42 LT AND RT.  MDG SB NR 228 AND SRM (TO 1C-47-3) SPECIFICALLY DESCRIBES ACCEPTABLE REPAIRS FOR THIS LOCATION ON THIS RIB.  SUPP INSP DOCUMENT DOES NOT GIVE GUIDANCE ON THE INSPECTION OF THIS AREA OF WING STRUCTURE.

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