# SDR U2RA201701280002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 28, 2017
- Submitted: February 21, 2017
- Operation: Air carrier
- Aircraft: [N919CA](https://openairdocs.org/aircraft/N919CA), registered now
- Make and model: Boeing 747428
- Aircraft serial: 25302
- Aircraft time: 89,251 hours, 13,055 cycles
- System (JASC): [5311 · Fuselage Main, Frame](https://openairdocs.org/jasc/5311)
- Part: Frame
- Part number: 65B01753
- Condition: Cracked
- Location: Bs 1200
- Part time: 89,251 hours, 13,055 cycles
- 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/U2RA201701280002

## Discrepancy

BS 1200 FRAME AT TENSION TIE ATTACH, FOUND TO HAVE 9 FASTNER HOLES WITH CRACK INDICATIONS AND THE TENSION TIE CHANNEL WAS FOUND TO HAVE 3 FASTENER HOLES WITH CRACK INDICATIONS. - PERFOMED OVERSIZE HOLE REPAIR AT ALL CRACKED FASTENER HOLE LOCATIONS IN ACCORDANCE WITH BOEING SERVICE BULLETIN 747-53A2507 REVISION 2. PERFOMED POST OVERSIZE HOLE REPAIR HFEC INSPECTION OF 12 EACH FASTENER HOLES AND THEY WERE CONFIRMED TO BE CRACK FREE.

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