3A-4
Primary Altimeter Diverge by 200 ft or More
If able to identify defective altimetry system
(1)
:
1
Determine aircraft altitude using operating ADAHRS channel.
2
Disengage autopilot and flight director.
3
Select operating ADAHRS channel, using the flight director couple select switch (L/R).
4
Re-engage autopilot and flight director.
5
Perform appropriate national RVSM contingency procedures for loss of redundancy of
primary altimeters.
If unable to determine accuracy of either altimetry system, perform appropriate national
RVSM contingency procedures for loss of all primary altimetry systems.
Note
(1)
The copilot’s and ESIS share a common static source. Therefore the ESIS should not
be used in determining which altimetry system is defective.
Section 3A - Abnormal Procedures (EASA Approved)
Primary Altimeter Diverge by 200 ft or More
Pilot's Operating Handbook
Report No: 02406
Issue date: Mar 06, 2020
Page 3A-4-1
12-C-A15-48-0304-00A-014U-A
FOR
GENERAL
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