# SDR UPS97422429

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 14, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N674UP
- Make and model: Boeing 747123
- Aircraft serial: 20100
- System (JASC): [5400 · Nacelle/Pylon Structure](https://openairdocs.org/jasc/5400)
- Part: Doubler
- Condition: Misinstalled
- Location: Nr 3 Pylon
- 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/UPS97422429

## Discrepancy

INSPECTION TYPE-C, PYLON 3 FOUND DURING SB54-2034R4 MODIFICATION THAT ALREADY DOUBLER WAS INSTALLED.  ONLY DOUBLER IS NOT ACCORDING SB     INSTALLED DOUBLER ON LT SIDE ACC, KLM DFX 97-046 REV 3 APPROVED EFN 747-54-0149R1.

---
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.