bret
Well Known Member
Going through the Dynon manual I came across this, so do I still need this check for the AW inspection?
In most transponder systems, a calibration is normally carried out every 24 months, as part of the altimeter checks on the aircraft. The maximum allowed difference between the primary altimeter and the altitude encoder is 125 feet in ETSO C88a and TSO C88b. The primary altimeter in SkyView and the altitude encoder are the same device (SV-ADAHRS-200/201). It is therefore impossible for the encoder and the primary altimeter to exceed 125 feet of altitude difference. They will always be exactly the same as each other, thereby meeting the TSO requirements. Therefore, no altitude encoder calibration is possible or necessary.
In most transponder systems, a calibration is normally carried out every 24 months, as part of the altimeter checks on the aircraft. The maximum allowed difference between the primary altimeter and the altitude encoder is 125 feet in ETSO C88a and TSO C88b. The primary altimeter in SkyView and the altitude encoder are the same device (SV-ADAHRS-200/201). It is therefore impossible for the encoder and the primary altimeter to exceed 125 feet of altitude difference. They will always be exactly the same as each other, thereby meeting the TSO requirements. Therefore, no altitude encoder calibration is possible or necessary.