# SDR UIEA02003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 2002
- Submitted: February 25, 2002
- Operation: Air carrier
- Aircraft: N534MC
- Make and model: Boeing 747-2F6B
- Registry model: [Boeing 747-2F6B](https://openairdocs.org/model/boeing-747-2f6b) (OpenAirDocs)
- Aircraft serial: 21832
- System (JASC): [5415 · Nacelle/Pylon, Attach Fittings](https://openairdocs.org/jasc/5415)
- Part: Attach Fitting
- Part number: 65B17255
- Condition: Scored
- Location: Nr 4 Pylon
- Part time: 79,566 hours
- 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/UIEA02003

## Discrepancy

DURING CURRENT C-CHECK AT SIAEC WHILE PERFORMING TERMINATING ACTION PER ATLAS AIR EO 4757A082, NR 4 PYLON LOWER WING DIAGONAL BRACE ATTACH FITTING, TAPER LOCATION INSTALLATION ' FOUND THE LAST THREE FASTENER HOLES SCORED.  POSITIONS ARE ONE EACH AT INBOARD 2ND FROM NED, 1 EACH AT INBOARD AFT AND 1 EACH AT OUTBOARD AFT.  REAMED HOLES TO .500.  PERFORMED OPEN HOLE HFEC INSPECTION.  NO FINDINGS.  INSTALLED BACB30US8K32 FASTENERS IN LIEU OF TAPER LOCKS PER SRM 51-30.  AMOC ISSUED TO SATISFY REQUIREMENTS PER AD 2001-13-06 ON FORM 8110-3.  (M)

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