Question juridique clé
Whether the appeal in social insurance matters met the Federal Tribunal's admissibility requirements as to reasoning.
Solution extraite
The appeal did not satisfy the statutory reasoning requirements and was therefore inadmissible.
Motifs extraits
Neither the filing of 5 April 2009 nor the letter of 17 April 2009 set out in a sufficiently concise manner how the challenged judgment violated federal law, as required by Art. 42 paras. 1 and 2 LTF.