# SDR IPXA2025061664937

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 19, 2025
- Submitted: June 18, 2025
- Operation: Air carrier
- Aircraft: [N403UP](https://openairdocs.org/aircraft/N403UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 23725
- Aircraft time: 38,862 hours, 26,844 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Stringer
- Part number: 146N3110190
- Condition: Corroded
- Location: Zone 100
- 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/IPXA2025061664937

## Discrepancy

FUSELAGE STA 1473 SUSPECTED CORROSION ON SKIN REPAIRED AT CTR VHF ANTENNA AREA TRIPLER METAL PLATE HAS BULGING AND 01EA FASTENER HEAD IS OUT ON METAL PLATE HOLE AS MARKED. 74-002 ATA CODE 53 ACCOMPLISH REPAIR PER EO-94040-REQ1 AND VT-SAA EA 757-5360-01-B0499, REV I/R, PRIOR TO FURTHER FLIGHT. CAUTION: THE WORK INSTRUCTIONS CONTAINED WITHIN (OR APPROVED BY) THIS EO CONTAIN RII INSPECTION REQUIREMENTS AND RII BUY - OFF WHICH MUST BE PERFORMED BY A PROPERLY TRAINED AND CURRENTLY AUTHORIZED INDIVIDUAL. TO DETERMINE RII AUTHORIZATION, REFER TO THE CURRENT RII AUTHORIZATION LIST, SEE CHAPTER 04 OF THE GMM.

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