# SDR DOSS12

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 2, 2006
- Submitted: May 9, 2006
- Operation: General aviation
- Aircraft: [N422BA](https://openairdocs.org/aircraft/N422BA), registered now
- Make and model: Let L13 AC BLANIK
- Registry model: [Let L13 AC BLANIK](https://openairdocs.org/model/let-l13-ac-blanik) (OpenAirDocs)
- Aircraft serial: 028903
- Aircraft time: 1,109 hours
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Longeron
- Condition: Cracked
- Location: Rear Cockpit
- Part time: 1,109 hours
- 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/DOSS12

## Discrepancy

FIRST LONGERON (N434BA) WAS FOUND CRACKED AT THE ELEVATOR TRIM GUIDE ATTACH POINT, NEAR THE REAR COCKPIT (RCP) LT RUDDER PEDAL, DURING A SCHEDULED INSPECTION. SUBSEQUENT FINDINGS OCCURRED AS RESULT OF QUALITY DEPARTMENT ISSUING A ONE TIME INSPECTION OF ALL MDS. IT LOOKS AS IF THE OPERATOR, IN THE REAR COCKPIT, MAY BE STRIKING THE ELEVATOR TRIM GUIDE WITH HIS/HER FOOT WHILE ACTUATING THE RUDDER PEDAL - CAUSING THE SUPPORT STRUCTURE (LONGERON) TO WEAKEN AND FORM CRACKS AT THE ATTACH SCREWS.

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