# SDR SWIA2025120675118

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 2025
- Submitted: February 3, 2026
- Operation: Air carrier
- Aircraft: [N821SK](https://openairdocs.org/aircraft/N821SK), registered now
- Make and model: Cndair CL6002D24
- Aircraft serial: 15109
- Aircraft time: 38,465 hours, 24,998 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Pressure Deck
- Condition: Mechanic Error
- Location: Zone 200
- 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/SWIA2025120675118

## Discrepancy

ON THE PRESSURE FLOOR MODIFICATION, AN EXISTING FASTENER HOLE HAS SHORT ED. AT FS792, RBL36, THE HOLE COMMON TO THE DIAPHRAGM LOWER FLANGE, THE I/B HOLE AT FS792, RBL36 BEAM AND THE LOWER STRAP  (C-CHECK RO 02/01/2026)REMOVED DIAPHRAGM AT RBL36 FS792 TO FOM. PERFORMED REPAIR TO DIAPHRAGM AT FS792 RBL36 REF ALL STEPS OF REO 690-53-41-572 REV--, DATED 2025-12-19. INSTALLED DIAPHRAGM AT RBL36 FS792 REF CRJ-900 SRM 51-42-21-001-001-A01, CRJ-900 SRM 51-42-22-001-001-A01, ADN DWG SH690-36153 REV-A. COMPLIED WITH TASK CARD 51-900-1002-SKY.

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