# SDR UPS07450558

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 2007
- Submitted: August 31, 2007
- Operation: Air carrier
- Aircraft: N521UP
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- Aircraft serial: 21944
- Aircraft time: 79,715 hours, 18,925 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Condition: Cracked
- Location: Bs 340-360 S5r
- 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/UPS07450558

## Discrepancy

INSPECTION TYPE:C U/D RT BS 340-360 S5R LOCATION FOUND 1 HOLE CRACK AT FX SKIN RUNNING FWD AND AFT APPROX 1/8" BEYOND RIVET HEAD.  FX BS340-360 STR5R AREA SKIN REPAIRED WITHOUT ZERO TIMING AT CRITICAL ROW FASTENER AS PER SRM 53-30-03 FIG 1 AND UPS EO B747-5330-26295 APP B AND TAR 127777.  REPEAT INSPECTION IS REQUIRED AS PER SRM 53-30-03 FIG 1 AND UPS ASSIGNED MPI NR P19375.

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