# SDR 200200172

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 23, 2002
- Submitted: January 23, 2002
- Operation: Air carrier
- Filed by: [Marana Aerospace Solutions Inc, repair station ERKR675D](https://openairdocs.org/faa-repair-station/ERKR675D/marana-aerospace-solutions-inc.md) (OpenAirDocs)
- Aircraft: N639FE
- Make and model: Boeing 747-2R7F
- Registry model: [Boeing 747-2R7F](https://openairdocs.org/model/boeing-747-2r7f) (OpenAirDocs)
- Aircraft serial: 21650
- Aircraft time: 64,833 hours, 15,038 cycles
- System (JASC): [5753 · Trailing Edge Flaps](https://openairdocs.org/jasc/5753)
- Part: Flap Track
- Part number: 65B170674
- Part serial: 1441
- Condition: Corroded
- Location: T/E Flap
- 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/200200172

## Discrepancy

NUMBER 6 FLAP TRACK, AFT MOUNT SURFACE CORROSION.  CORROSION REMOVAL BY MACHINING EXCEEDED THE ALLOWED OHM REPAIR DEPTH.  THE AFFECTED PART NUMBER IS 65B17067-4.  THE REPAIR IS APPROVED BY THE BOEING COMPANY PER ECRA N639FE-57-B747-013-EAC.

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