# SDR IPXA2021030266315

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 10, 2021
- Submitted: March 5, 2021
- Operation: Air carrier
- Aircraft: [N251UP](https://openairdocs.org/aircraft/N251UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48744
- Aircraft time: 62,870 hours, 14,148 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Stringer
- Part number: APB74761
- Condition: Cracked
- Location: Center Tank
- 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/IPXA2021030266315

## Discrepancy

INSPECTION TYPE:3CCENTER WING TANK LOWER STRINGER #47 IS CRACKED AT STA. XCW= -17.REPAIRED CRACKED CENTER WING TANK LOWER STRINGER #17 BETWEEN STA. XCW= -6 TO XCW= -29 IAW SRM 57-10-03 REPAIR 3 FIG. 201. (MAJOR).

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