# SDR IPXA2023121838494

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 15, 2023
- Submitted: December 18, 2023
- 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: 55,675 hours, 8,625 cycles
- System (JASC): [5532 · Vertical Stabilizer, Plate/Skin](https://openairdocs.org/jasc/5532)
- Part: Skin
- Part number: 186U10071
- Part serial: NSN
- Condition: Delaminated
- Location: Vertical Stab
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2023121838494

## Discrepancy

*** SDR FILED OPEN *** DELAMINATION LEFT SIDE OF VERTICAL STABILIZER AFT & ABOVE HF COUPLER MATERIAL ID. TO BE: L ANGLE BAC1503-5818 - 81205 (ANGLE, 90 DEGREE, ALUMINUM EXTRUDED (1.50 X 1.50, 0.093) 7075-T6511) P.O 1260290 AND SKIN PANEL 075T6(.125X48X144) (SHEET,ALUMINUM,A/C QUALITY,QQA250/13) P.O SP2383125

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