ED Decision 2020/010/R
The following is an example of the distribution of the tasks between the APU certification and the aircraft certification.
|
FUNCTIONS OR
INSTALLATION CONDITIONS |
SUBSTANTIATION
UNDER CS-APU |
SUBSTANTIATION
UNDER CS-25 |
|
|
APU CONTROL AND
PROTECTION |
— Safety objective — Software/AEH
criticality level |
— Reliability — Software/AEH
criticality level |
|
|
MONITORING |
— Independence of
control and monitoring parameters |
— Monitoring parameter
reliability |
— Indication system
reliability |
|
AIRCRAFT DATA |
— Protection of APU
from aircraft data failures — Software/AEH
criticality level |
|
— Aircraft data
reliability |
|
CONTROL SYSTEM
ELECTRICAL SUPPLY |
|
|
— Reliability and
quality of aircraft supply if used |
|
ENVIRONMENTAL
CONDITIONS, LIGHTNING AND OTHER ELECTROMAGNETIC EFFECTS |
— Equipment protection |
— Declared capability |
— Aircraft design — Aircraft wiring
protection |
[Amdt 20/19]
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