# SDR IPXA2026020462981

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 12, 2026
- Submitted: February 4, 2026
- Operation: Air carrier
- Aircraft: [N411UP](https://openairdocs.org/aircraft/N411UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 23851
- Aircraft time: 39,473 hours, 26,446 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Stringer
- Part number: 146N3110186
- 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/IPXA2026020462981

## Discrepancy

FUSELAGE SKIN IS BULDGING AROUND TWO FASTNER HEADS, JUST FORWARD OF THE AFT LOWER FUSELAGE MAJOR REPAIR AT AFT VHF ANTENNA.   REMOVED 3 BULDGING RIVETS FORWARD OF THE AFT LOWER FUSELAGE MAJOR DOUBLER REPAIR AT STATION 1460 AND FRAME 1480 OF AFT VHF ANTENNA, NO DAMAGE NOTED IN THIS AREA IAW SRM B757-200 TASK: 51-40-02, AFTER FURTHER INVESTIGATION FOUND 4 RIVETS WITH EVIDENS OF CORROSION 6 INCHE AFT THE THREE INITIAL RIVETS IN THE AFT VHF ANTENNA DOUBLER. ++INSTALLED PRODUCTION SPLICE STA 1460 STR30IAW SRM 51-40-02-0G-0. INSTALLED AFT VHF ANTENNA SUPPORT ASSY REMOVED ON STEP 7 OF THIS NON ROUTINE IAW SRM B757-200 TASK: 51-40-02.

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