MOC VTOL.2435(g) Flight
crew awareness of the lift/thrust unit configuration
n/a
This MOC is applicable in case that several configurations of the lift/thrust system are part of the VTOL type design definition.
It is a common practice in the rotorcraft industry that turbines are equipped with different kinds of air intakes depending on the mission. In accordance with VTOL 2435 (g) the flight crew must be aware of the associated configuration in order to apply the proper procedures and to adequately calculate the performances.
(a) The term “configuration” of the lift/thrust system mentioned in VTOL.2435 (g) refers only to “physical” configuration. It does not consider the different aerodynamic conditions that a lift/thrust system may be subject to within the certified envelope. For example, a lift/thrust unit mounted on a tilting element is considered as a single configuration even though the aerodynamic conditions in which the lift/thrust unit operate depend on the tilting angle.
(b) The intent of VTOL.2435(g) is therefore to provide the flight crew through the relevant VTOL capable aircraft systems, with the necessary information concerning any lift/thrust configuration that has an impact on:
(1) the lift/thrust performances
(2) the lift/thrust operating procedures
The applicant should assess the impact of any lift/thrust configuration change with regards to these criteria.
(1) The flight crew should have a clear and easily interpretable means to know which configuration of the lift/thrust system is mounted
(2) Operating procedures impacted by the configuration should be provided in the flight manual
(3) The impact of the different configurations on the VTOL capable aircraft performances should be established by a combination of analysis, bench tests and flight tests. Following their determination, they should be published in the flight manual
EASA VTOL aircraft regulations require flight crew awareness of lift/thrust system configurations impacting performance and procedures. Physical configuration changes, like different air intakes, necessitate clear identification for pilots. Flight manuals must detail configuration-specific procedures and performance data. Automated systems should receive configuration status automatically, ensuring safe VTOL operation.
* Summary by Aviation.Bot - Always consult the original document for the most accurate information.
Loading collections...