Flaps Retrofit Set for Early Embraer Phenom 100s

 - March 18, 2009, 11:25 AM

Embraer is paying for a service bulletin to replace flap-controller units in the first 10 to 20 Phenom 100 very light jets. The new controller units will have updated software to fix a “nuisance failure” problem that causes the flaps not to work. “The failure does not actually exist,” explained Embraer’s Mauricio Martins de Almeida Filho, “but the system interprets it as a ‘flap fail’ condition and triggers a fail-safe shutdown. In most occurrences a new command on the [flap] lever is capable of recovering the system, but in a few cases maintenance action (a system re-rig) is required.” An Airworthiness Directive (AD2009-05-06) also affects the flap system and calls for new procedures and limitations section revisions in the AFM, due to “a possibility that during a go-around procedure with a flap system failed the stall warning and the stick pusher triggering angles are anticipated reducing the margin between the real angle of attack and the stick pusher triggering angle.”