# SDR UIEA2012041900149

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 26, 2012
- Submitted: April 19, 2012
- Operation: Air carrier
- Aircraft: [N418MC](https://openairdocs.org/aircraft/N418MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 32840
- Aircraft time: 40,888 hours, 6,095 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Condition: Cracked
- Location: Bs 740
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2012041900149

## Discrepancy

MAIN DECK,  BS 740 FRAME TENSION TIE ATTACHMENT AREA 1 EA HOLE FOUND CRACKED AT AFT CHANNEL APPROX 0.040" RUNNING UPWARD.  CHANNEL REPAIRED IAW EO 4453A301. STEP 5F AND SB 747-50A2502, REV 1, FIG 11.

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