# SDR FXGA202606150001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 12, 2026
- Submitted: June 16, 2026
- Operation: Air carrier
- Aircraft: [N418RE](https://openairdocs.org/aircraft/N418RE), registered now
- Make and model: Textrn 408
- Aircraft serial: 4080029
- Aircraft time: 985 hours, 1,062 cycles
- System (JASC): [2750 · Trailing Edge Flap Control System](https://openairdocs.org/jasc/2750)
- Part: Drive Cable
- Part number: 991434478
- Part serial: 83
- Condition: Deformed
- Location: Zone 500
- Part time: 985 hours, 1,062 cycles
- Component: Flap, Textron
- Component part number: 78251002
- Stage of operation: DE
- How discovered: O
- Nature of condition: F, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FXGA202606150001

## Discrepancy

FLAP FAIL CASS MESSAGE INDICATED WHEN FLAP DEPLOYED FROM FULL UP. UPON INVESTIGATION FOUND THE LT FLAP HAD A SLIGHT TWIST. THE OTBD ACTUATOR HAD NOT ENGAGED TO DRIVE THE FLAP AND THE INBD ACTUATOR DROVE THE INBOARD SIDE DOWN ABOUT 3 DEGREES BEFORE THE SYSTEM DETECTED AN ASYMMETRY AND STOPPED THE MOVEMENT. AFTER THE FLAP WAS UNLOADED/UNTWISTED DURING MX INVESTIGATION THE FLAP APPEARS TO HAVE A SLIGHT DOWN TURN ON THE INBD TRAILING EDGE. THE CURRENT SUSPECTED CAUSE IS THE FLEXIBLE DRIVE SHAFT BETWEEN THE ACTUATORS MIGRATED INBD AND BECAME DISENGAGED WITH THE OTBD ACTUATOR.

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