2018-05

Recommendation PREAMBLE:

During review of ULA’s Flight Operation Manual (FOM) that was published by its manufacturer, there were noticed ambiguities and deficiencies in the operation and maintenance instructions. More specifically, there was no clear correlation between the kind of scheduled inspections that must be carried out and the prescribed time period as well in paragraphs XI and XXI of the manual there were not properly formulated maintenance instructions and in paragraph VIII they were provided operating limitations only for the engine Rotax 912 and not for the engine Rotax 582 that this ULA was equipped. In addition in the maintenance instructions there wasn’t reference to the necessity or not of lubricating the engine control cables and they were deficiencies in the description of systems and specifications of ULA. Also, the FOM didn’t provide information concerning its revision status and the revision status of its pages.