# SDR UIEA01051

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 26, 2001
- Submitted: May 17, 2001
- Operation: Air carrier
- Aircraft: [N509MC](https://openairdocs.org/aircraft/N509MC), registered now
- Make and model: Boeing 747230B
- Aircraft serial: 21221
- System (JASC): [5753 · Trailing Edge Flaps](https://openairdocs.org/jasc/5753)
- Part: Flap Track
- Part number: 65B170651
- Condition: Corroded
- Location: T/E Flap
- Part time: 100,709 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/UIEA01051

## Discrepancy

DURING INSPECTION FOUND, NR 1 FLAP TRACK AFT INBOARD REAR SPAR ATTACH MOUNT HOLE CORRODED.  REAMED HOLE OVERSIZE TO 1.139 FEET, FABRICATED BUSHING.  INSTALLED BUSHING PER STANDARD PRACTICES.  REINSTALLED WITH STANDARD SIZE HARDWARE.  NR 3 FLAP TRACK BOTH REAR SPAR ATTACH HOLES CORRODED.  REAMED HOLES OVERSIZED TO 1.285 INCH.  FABRICATED BUSHINGS.  INSTALLED PER STANDARD PRACTICES.  REINSTALLED WITH STANDARD SIZE HARDWARE.  (M)

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