# SDR UIEA200400192

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 15, 2004
- Submitted: November 24, 2004
- Operation: Air carrier
- Aircraft: [N512MC](https://openairdocs.org/aircraft/N512MC), registered now
- Make and model: Boeing 747230B
- Aircraft serial: 21220
- Engine: Ge CF650E2
- System (JASC): [5414 · Nacelle/Pylon, Plate/Skin](https://openairdocs.org/jasc/5414)
- Part: Skin
- Part number: 65B8904938
- Condition: Cracked
- Location: Nr 2 Pylon
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA200400192

## Discrepancy

DURING SCHEDULED MAINTENANCE INSPECTION, THE BULKHEAD UPPER ASSY FORWARD ANGLE FRAME OF THE NR 2 PYLON LT AND RT SIDE WERE FOUND CRACKED.  FABRICATED AND INSTALLED REPAIR ANGLES ON THE FORWARD AND AFT FRAMES IN THE REPAIR AREA.  INSTALLED THE REPAIR ANGLES BY PICKING-UP ALL EXISTING FASTENER LOCATIONS AFFECTED BY THE REPAIR PARTS WITH LOCK FASTENERS.  CONDUCT REPEAT DETAILED VISUAL INSPECTION OF THE FORWARD FRAMES AT THE REPAIRS AND ADJACENT CHORD AREA EVERY C-CHECK OR 18 MONTHS WHICHEVER IS FIRST, FOR CRACK, LOOSE FASTENERS AND DAMAGE.  EO TO BE ISSUED TO ACCOMPLISH INSPECTION AT 18 MONTH INTERVALS OR C-CHECK WHICH EVER IS FIRST.

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