# SDR 07FDEA04373

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 28, 2007
- Submitted: September 28, 2007
- Operation: Air carrier
- Aircraft: [N728FD](https://openairdocs.org/aircraft/N728FD), registered now
- Make and model: Airbus A300 B4-622R
- Registry model: [Airbus A300 B4-622R](https://openairdocs.org/model/airbus-a300-b4-622r) (OpenAirDocs)
- Aircraft serial: 581
- Aircraft time: 37,731 hours, 19,255 cycles
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Part number: A579601320000
- Condition: Cracked
- Location: Zone 500
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/07FDEA04373

## Discrepancy

DURING SCHEDULED B CHECK,  LT INBOARD FLAP RIB 25, P/N A 5796011320000 WAS FOUND TO CRACKED IN TWO PLACES, A 1.5 INCH CRACK WAS FOUND IN THE FWD UPPER RADIUS AND A 1.5 INCH CRACK WAS FOUND IN THE AFT UPPER RADIUS AND FLANGE,   REF: N00029.  REMOVED AND REPLACED DAMAGED RIB REF: A300 SRM 51-40-21.

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