# SDR UIEA2011091300494

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 21, 2011
- Submitted: September 13, 2011
- Operation: Air carrier
- Aircraft: N523MC
- Make and model: Boeing 747-2D7B
- Registry model: [Boeing 747-2D7B](https://openairdocs.org/model/boeing-747-2d7b) (OpenAirDocs)
- Aircraft serial: 21782
- Aircraft time: 104,519 hours, 21,333 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Condition: Cracked
- Location: Bs 840
- Stage of operation: IN
- How discovered: E
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2011091300494

## Discrepancy

RIGHT BS 840 FRAME TO TENSION TIE ATTACHMENT AREA FOUND 1 EA FASTENER HOLE CRACKED AT FWD CHANNEL CRACK APPROX .1250" IN LENGTH.   REPAIR CARRIED OUT IAW HX RS NR R53-25-37200, REV 8.

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