# SDR UATA1740327265301

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 16, 2026
- Submitted: March 27, 2026
- Operation: Air carrier
- Aircraft: [N440RA](https://openairdocs.org/aircraft/N440RA), registered now
- Make and model: Casa C212CC
- Aircraft serial: 174
- Aircraft time: 44,605 hours, 64,106 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Gusset
- Part number: 2122240606120712
- Condition: Corroded
- Location: Zone 100
- Part time: 44,605 hours, 64,106 cycles
- 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/UATA1740327265301

## Discrepancy

RH SIDE FR 6 & FR 11 FLOOR SUPPORT GUSSETS NUT PLATES CORRODED. REPLACED F6/F11 JUNCTION BARS. FOUND 4 FUSELAGE JUNCTION FITTINGS CORRODED ON RH AT FRAME 6 & 11 UNDERFLOOR. FOUND RH WALL SEAT RAIL MIDDLE SECTION CORRODED. F6 & 
ALL NEW PARTS ACID ETCHED, ALODINED, AND PRIMED W/ 511K011 EPOXY PRIMER. FITTINGS INSTALLED W/ THE FOLLOWING HARDWARE AS REQUIRED: HL18PB PINS, HL65PB PINS, & MS20470AD RIVETS. MATERIALS USED; FASTENER TYPE, SIZE, SPACING, & REPAIR CRITERIA WERE OBTAINED FROM ORIGINAL INSTALLATION, CASA 212-200 SRM SECTION 4 FIG 4.17, & AC 43.13-1B SECTION 4-60B (P4-40), 4-57B (P4-16), 4-57E(P4-19). RH WALL SEAT RAIL SECTION. REMOVED SEAT RAIL. FABRICATED NEW SEAT RAIL FROM 206196-1 :2024-T3511 SEAT RAIL STOCK TO SAME DIMENSIONS AS PREVIOUSLY INSTALLED. INSTALLED SEAT RAIL USING CR3242 RIVETS, NAS1670 FASTENERS, & MS20426E RIVETS AS REQUIRED. MATERIALS USED; FASTENER TYPE, SIZE, SPACING, & REPAIR CRITERIA WERE OBTAINED FROM PREVIOUS INSTALLATION. AS WELL AS AC43.13-1B 4.57B (P:4-16) 4.57F (P:4-19). CONTINUED AIRWORTHINESS WILL BE MAINTAINED IN ACCORDANCE WITH CURRENT INSPECTION PROGRAM OR AIRCRAFT MANUFACTURERS INSPECTION PROGRAM. WEIGHT & BALANCE CHANGE WAS CONSIDERED NEGLIGIBLE.

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