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TheVMC applicable to the various classes of airspace are providedon pages
218-224.
PRE-FLIGHTALTIMETERCHECK (AIPENR1.7)
GENERAL
Whenever an accurateQNH is available and the aircraft is at a known
elevation, pilotsmust conduct an accuracy check of the aircraft’s altimeter at
some point prior to takeoff. In order of priority, the pilot shoulduse tarmac,
threshold or airfield referencepoint elevation for the check.
pre-flight altimeter check
3 – general i nformat i on
E
IFR IFR from IFR ATC service and
traffic info on
VFRflights as far
as is practicable
250 kt below
10 000 ft
AMSL*
Continuous
two-way
Yes
VFR Nil
FIS
RIS - flight
followingO/R,
(ATCworkload
permit)
250 kt below
10 000 ft
AMSL*
Continuous
two-way
No
G
IFR Nil
FIS
250 kt IAS
below 10000
ft AMSL*
Continuous
two-way
No
VFR Nil
FIS
RIS - flight
followingO/R,
(ATCworkload
permit)
250 kt IAS
below 10 000
ft AMSL*
VHF radio
required
for OPS
above 5 000
ft AMSL
and at
aerodromes
where
carriage and
use of radio
is required
No
250 kt IAS
below 10 000
ft AMSL*
VHF radio
required
for OPS in
reduced
VMC
No
Note1: Speed limitations arenot applicable tomilitary aircraft
Note2: If traffic conditions permit, ATCmay approve a pilot’s request to exceed the 200 kt
speed limit to amaximum limit of 250 kt unless thepilot informsATC a higherminimum
spped is required.