# SDR DALA2026092205308

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 16, 2026
- Submitted: September 23, 2026
- Operation: Air carrier
- Aircraft: [N301DU](https://openairdocs.org/aircraft/N301DU), registered now
- Make and model: Airbus BD-500-1A11
- Registry model: [Airbus BD-500-1A11](https://openairdocs.org/model/airbus-canada-lp-bd-500-1a11) (OpenAirDocs)
- Aircraft serial: 55069
- Aircraft time: 15,509 hours, 6,824 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Door Frame
- 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/DALA2026092205308

## Discrepancy

DURING H CHECK IN MSP, MAINTENANCE WAS ACCOMPLISHING EO WORKCARD 5331-01297-02C (SB BD500-530010 ISSUE 004). DURING MODIFICATION, THE AFT CARGO DOOR SURROUND STRUCTURE C01343028- 103 LOWER SILL WAS FOUND WITH CORROSION. THE CORROSION FOUND IS ON THE OUTER SURFACE OF THE SILL LOCALLY AROUND THE FASTENER HOLES THAT ATTACH THE SCUFF PLATE. THIS ERA WILL REPAIR THE CORROSION. MX COMPLIED WITH ER/A 636421-14 PRI REV 0, ER/A 636421-14 PRI REV 1, ER/A 636421-14 PRI REV 2, ER/A 636421-14 PRI REV 3, ER/A 636421-14 PRI REV 4, ER/A 636421-14 PRI REV 5, AND ER/A 636421- 14 REV ORIG. ASSOCIATED ER/A 00-636421 ADDED FOR AC 8301. (LP# 1816272; AIRCRAFT WAS GROUNDED)

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