# SDR UPS02438028

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 24, 2002
- Submitted: April 12, 2002
- Operation: Air carrier
- Aircraft: N525UP
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- Aircraft serial: 21939
- Aircraft time: 76,787 hours, 14,624 cycles
- System (JASC): [5412 · Nacelle/Pylon, Bulkhead/Firewall](https://openairdocs.org/jasc/5412)
- Part: Bulkhead
- Part number: 65B903117
- Condition: Cracked
- 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/UPS02438028

## Discrepancy

INSPECTION TYPE:C NR 4 PYLON AFT TORQUE BULKHEAD FOUND 3 FASTENER HOLES CRACK AT CHORD AREA.  REPAIR CARRIED OUT AS PER RS-54-53-34764 INSTRUCTIONS.

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