# SDR UIEA2022042600397

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 29, 2022
- Submitted: May 3, 2022
- Operation: Air carrier
- Aircraft: [N473MC](https://openairdocs.org/aircraft/N473MC), registered now
- Make and model: Boeing 747
- Aircraft serial: 27174
- Aircraft time: 111,020 hours, 19,942 cycles
- System (JASC): [5300 · Fuselage Structure (General)](https://openairdocs.org/jasc/5300)
- Part: None
- Condition: None
- 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/UIEA2022042600397

## Discrepancy

L/H BS 900 MOST INNER ROW OF FASTENER HOLES AT TENSION TIE TO FRAME ATTACHMENT UPPER HOLE CRACK WAS FOUND ON FWD CHANNEL RUNNING UP AND DOWN APPROX 0.030 AND 0.040".(<P>STA 900 LH TENSION TIE FORWARD CHANNEL AND FORWARD DOUBLER FASTENER HOLES CRACK AREA REPAIRED IAW RI-53-00-15553 REV A</P>)

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