# SDR IPXA2026061688559

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 28, 2026
- Submitted: June 23, 2026
- Operation: Air carrier
- Aircraft: [N577UP](https://openairdocs.org/aircraft/N577UP), registered now
- Make and model: Boeing 747-44AF
- Registry model: [Boeing 747-44AF](https://openairdocs.org/model/boeing-747-44af) (OpenAirDocs)
- Aircraft serial: 35666
- Aircraft time: 63,511 hours, 9,924 cycles
- System (JASC): [5730 · Wing, Plate/Skin](https://openairdocs.org/jasc/5730)
- Part: Skin
- Part number: 65B135033J
- Part serial: 74707050397
- Condition: Eroded
- Location: Zone 500
- 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/IPXA2026061688559

## Discrepancy

ERODED SKIN, LT WING L/E LOWER PANEL 521EB FWD EDGE.  IAW SRM 51-70-07-0G-0 REV. 106 REMOVED THE EROSION MATERIALS AND CLEAN. BOND THE REPAIR PLIES WITH FILM ADHESIVE CURED AT 260 F FOR 130 MINUTES WITH A MINIMUM VACUUM OF 22 IN/HG.  IAW AMM 20-51-01-912-008, REV 116, INSTALLED PANEL 521EB.

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