# SDR UPS02437690

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 28, 2002
- Submitted: February 18, 2002
- Operation: Air carrier
- Aircraft: [N673UP](https://openairdocs.org/aircraft/N673UP), registered now
- Make and model: Boeing 747123
- Aircraft serial: 20325
- Aircraft time: 68,011 hours, 20,052 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Fitting
- Condition: Cracked
- Location: Fuselage
- 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/UPS02437690

## Discrepancy

INSPECTION TYPE:C CRACK REVEALED ON LT BS 1480 BULKHEAD HOLE NR 3 AT EXTENSION FITTING, SKIN, BULKHEAD CHORD AND OUTER CHORD SPLICE FITTING.  LT BS 1480 BULKHEAD HOLE NR 3 EXTENSION FITTINGG REAMED TO 0.650 INCH, SKIN REAMED TO 0.687 INCH, BULKHEAD CHORD REAMED TO 0.625 INCH & OUTER CHORD SPLICE FITTING REAMED TO 0.687 INCH AS PER EO B747-5310-10732 & NDT CONFIRMED NR 3 HOLE NO CRACK REVEAL.  REPAIR BUSHING INSTALLED ON NR 3 HOLE AS PER SB 747-53A2390 R1 FIG 11.

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