# SDR UPS97421998

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 2, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N671UP](https://openairdocs.org/aircraft/N671UP), registered now
- Make and model: Boeing 747123
- Aircraft serial: 20323
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Longeron
- Part number: 65B150329
- Condition: Cracked
- Location: Bs 1350\1480
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS97421998

## Discrepancy

INSPECTION TYPE:  C.  DUE TO CRACK AT BSTA 1480 AT OVERWING LONGERON LT SIDE.  REPLACE LT OVERWING LONGERON UPPER CHORD FROM STA 1350 TO BSTA.1480 PER SB 747-53-2291.  REPLACED O/W LONGERON AT STA.1350 THROUGH 1480 LT ACCORDING SB 747-53-2291 AND DWG. 624U0008 SHEETS 3 AND 4.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.