# SDR UPS02439648

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 18, 2002
- Submitted: October 11, 2002
- Operation: Air carrier
- Aircraft: N680UP
- Make and model: Boeing 747-SR-46
- Registry model: [Boeing 747-SR-46](https://openairdocs.org/model/boeing-747-sr-46) (OpenAirDocs)
- Aircraft serial: 20923
- Aircraft time: 63,455 hours, 32,969 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Bulkhead
- 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/UPS02439648

## Discrepancy

INSPECTION TYPE:C LT BS 1480 AREA FOUND HOLE NR 26 CRACKED AT BULKHEAD WEB.     LT BS 1480 BULKHEAD SPLICE WEB NR 26 BOLT HOLE OVERSIZED TO 0.660 INCH & CONFIRMED CRACK FREE. REPAIR BUSHING FABRICATED & INSTALLED AS PER BOEING SB 747-53A2390 FIG 11 & HAECO RS R-53-43-34911 & UPS EO B747-5310- 17623-A. THE REPEAT INSPECTION OF BS 1480 BULKHEAD & SPLICE COMPONENT WILL BE REDUCED TO 4800 FLIGHT CYCLES AS PER UPS EO B747-5310-10732.

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