# SDR DALA13001786307

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 26, 2012
- Submitted: January 15, 2013
- Operation: Air carrier
- Aircraft: N667US
- Make and model: Boeing 747451
- Aircraft serial: 24222
- Aircraft time: 97,543 hours, 11,950 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Tension Tie
- Condition: Cracked
- Location: Bs 1120
- Stage of operation: IN
- How discovered: E
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA13001786307

## Discrepancy

DURING OPEN HOLE HFEC INSPECTION ON RT SIDE BS 1120 TENSION FOUND ONE CRACK AT FWD CHANNEL , UPPER ROW 5TH FASTENER HOLE FROM OTBD.   REAMED OVERSIZE FROM 0.199" TO 0.247" DIA IAW SB 747-53A2507, REV 1. NDT OPEN HOLE INSPECTION CARRIED OUT IAW NDTM D6-7170, REV 142.  PART 6 51-00-00 PROC 16 AND FOUND NO CRACK EVIDENT.

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