# SDR UATA2870513265701

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 6, 2026
- Submitted: May 13, 2026
- Operation: Air carrier
- Aircraft: [N439RA](https://openairdocs.org/aircraft/N439RA), registered now
- Make and model: Casa C212200
- Aircraft serial: 287
- Aircraft time: 41,791 hours, 68,048 cycles
- System (JASC): [5710 · Wing Main, Frame Structure](https://openairdocs.org/jasc/5710)
- Part: Stiffener
- Condition: Cracked
- Location: Zone 500
- Part time: 41,791 hours, 68,048 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/UATA2870513265701

## Discrepancy

FOUND A CRACK IN STIFFENER ON THE LH WING FALSE SPAR AT W.S. 4900. THE CRACKED STIFFENER WAS R&R WITH NEW, FABRICATED STIFFENER MADE FROM 2024-T3 ALUMINUM .032" THICK, THE PRE-EXISTING SPACER HAD NO DAMAGE AND WAS REUSED. THE NEW STIFFENER WAS PRIMED WITH SUPER KOROPON BAC452 DESOTO PRIMER AND INSTALLED USING CR3213 BLIND FASTENERS, AND HLI 8PB HI-LOKS OF VARYING LENGTHS. ALL WORK PERFORMED WAS ACCOMPLISHED IRW CASA TL NO. 27 AND CASA SRM SECTION II, AND WAS DETERMINED TO BE AIRWORTHY. CONTINUED AIRWORTHINESS WILL BE MAINTAINED IAW CURRENT INSPECTION PROGRAM OR AC MANUFACTURERS INSPECTION PROGRAM. WEIGHT AND BALANCE CHANGE WAS CONSIDERED NEGLIGIBLE.

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