# SDR UPS02437980

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 27, 2002
- Submitted: April 10, 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): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Part number: 65B140633
- Condition: Corroded
- Location: Fuselage
- 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/UPS02437980

## Discrepancy

INSPECTION TYPE:C FX - KEEL BEAM BOX UNDER FAIRING SUPPORT LOWER SURFACE FOUND SURFACE CORROSION AT BS 1438 TO BS 1465 RBL 16 TO LBL 16.  CHANNEL REPLACED AS PER SRM 51-10-01 PG 8.

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