# SDR UIEA2022041400296

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 13, 2022
- Submitted: April 15, 2022
- Operation: Air carrier
- Aircraft: [N407KZ](https://openairdocs.org/aircraft/N407KZ), registered now
- Make and model: Boeing 747-4KZF
- Registry model: [Boeing 747-4KZF](https://openairdocs.org/model/boeing-747-4kzf) (OpenAirDocs)
- Aircraft serial: 36134
- Aircraft time: 52,075 hours, 9,649 cycles
- System (JASC): [5314 · Fuselage Main, Keel](https://openairdocs.org/jasc/5314)
- Part: Keelbeam
- Condition: Corroded
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2022041400296

## Discrepancy

CORROSION - KEEL BEAM. INNER SURFACE OF KEEL BEAM, STA 1405 - 1427(<P>1. REMOVE THE AFFECTED FASTENERS AIW SRM 51-40-02 REV 94. 2. BLEND OUT THE DAMAGE AREA IAW SRM 51-10-02 REV 94. 3. ACCOMPLISH EI T2022A53M-955 REV 1. ORIGINAL EI ATTACHING WITH W/O 6880625</P>)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.