# SDR UPS07450033

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 29, 2007
- Submitted: June 27, 2007
- Operation: Air carrier
- Aircraft: N520UP
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- Aircraft serial: 21943
- Aircraft time: 83,127 hours, 18,423 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Condition: Cracked
- Location: Bs 820
- 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/UPS07450033

## Discrepancy

INSPECTION TYPE:C CRACK FOUND AT FWD CHANNEL AT BS820 S10AR TENSION TIE AT HOLE NR 4 THE CRACK WAS FOUND RUNNING AT 12 O/C POSITION WITH LENGTH 0.040" APPROX.  BS 820 RT FRAME ATTACH TENSION TIE FWD CHANNEL REPAIRED AS PER RS R53-25-35809.  SUPPLEMENTAL INSPECTION IS REQUIRED AS PER RS R53-25-35809 AND UPS EO B747-5310-26947.

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