pdf Gfa 090an issue 6 Popular

MISCELLANEOUS AIRWORTHINESS INFORMATION - DG-500 AND DG-500M

1. Technical Note 843/4 allows the replacement of the Bosch electronic ignition units with Ducati units as Bosh units are no longer available. 2. Combined DG Technical Note 843-6 and 348-5 describe the optional fitting of a headrest for the rear cockpit on serial numbers up to 5 E 135. 3. DG Flugzeugbau GmbH Technical Note No. 843/11 retrofit of Exhaust Gas Temperature (EGT) probes. Monitoring of the EGT is the best possible way to avoid severe engine damage due to overheating caused by a too lean fuel-air mixture. Therefor the manufacturer now offers a retrofit kit. This is an optional modification. 1. There has been one reported incidence of the nylon bush at the front of the dive brake handle displacing from the handle and preventing the dive brakes from being locked. This part should be regularly inspected to ensure the bush is not working its way out of the handle. 2. DG-500M. There have been at least 2 cases in Australia where the engine failed to extend or retract because of one of the terminals on the signal filter adjacent to the spindle motor failed. It is unclear whether the failure was a result of a dry solder joint or because of fatigue. In both cases the fault was rectified by carefully cleaning the terminal and resoldering it to the circuit board. It is recommended that these joints be inspected at each annual inspection. Issue 5 updates the AN with type defects taken from AWAs.