# SDR UIEA2019070504683

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 7, 2019
- Submitted: July 9, 2019
- Operation: Air carrier
- Aircraft: [N475MC](https://openairdocs.org/aircraft/N475MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29252
- Aircraft time: 81,980 hours, 15,111 cycles
- System (JASC): [5420 · Nacelle/Pylon Miscellaneous Structure](https://openairdocs.org/jasc/5420)
- Part: Lug
- Condition: Defective
- Location: Nr 4 Pylon
- 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/UIEA2019070504683

## Discrepancy

WHILE CARRYING OUT #4 PYLON MID-PIVOT FITTING MODIFICATION, FOUND #1 LUG BORE HOLE NOT CONCENTRIC(<P>LUG BORE HOLE NOT CONCENTRIC AT THE NOTED LOCATION REWORKED & REPAIR CARRIED OUT AS PER SASCO EN # 309-19, REV 0. REPAIR CLASSIFIED AS " MAJOR REPAIR" AS PER GMM CHAPTER 5.3.22, VERSION 19, DATED 23-JAN-2019.<BR /></P>)

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