(3) Correct final holding altitude in the MA
Segment: Calculate the correction by taking the final
missed approach (MA) holding altitude and subtract
the airport elevation. Use this number to enter the
height above airport column in TBL 7-3-1 until
reaching the reported temperature from the "Report
ed Temperature" row. Round this number as
applicable and then add to the final MA altitude only.
(b) Aircraft with temperature compensating
systems: If flying an aircraft equipped with a system
capable of temperature compensation, follow the
instructions for applying temperature compensation
provided in the airplane flight manual (AFM), AFM
supplement, or system operating manual. Ensure that
temperature compensation system is on and active
prior to the IAF and remains active throughout the
entire approach and missed approach.
(1) Pilots that have a system that is able to
calculate a temperature-corrected DA or MDA may
use the system for this purpose.

(2) Pilots that have a system unable to
calculate a temperature corrected DA or MDA will
manually calculate an altitude correction for the
MDA or DA.
NOTE-
Some systems apply temperature compensation only to
those altitudes associated with an instrument approach
procedure loaded into the active flight plan while other
systems apply temperature compensation to all procedure
altitudes or user entered altitudes in the active flight plan,
including altitudes associated with a STAR. For those
systems that apply temperature compensation to all
altitudes in the active flight plan, delay activating
temperature compensation until the aircraft has passed the
last altitude constraint associated with the active STAR.

2. Individual Segment(s) Method: Pilots are
allowed to correct only the marked segment(s)
indicated in the CTA list. https://www.faa.gov/
air_traffic/flight_info/aeronav/digital_products/dtpp
/search/. Pilots using the Individual Segment(s)
Method will reference the CTA list to determine
which segment(s) need a correction. See FIG 7-3-1.

FIG 7-3-1

Example Cold Temperature Restricted Airport List - Required Segments

(a) Manual Correction: Pilots will make a
manual correction when the aircraft is not equipped
with a temperature compensating system or when a
compensating system is not used to make the
correction. Use TBL 7-3-1, ICAO Cold Tempera
ture Error Table, to calculate the correction needed
for the approach segment(s).
(1) Intermediate Segment: All altitudes
from the FAF/PFAF up to but not including the
intermediate fix (IF) altitude. Calculate the correction
by taking FAF/PFAF altitude and subtracting the
airport elevation. Use this number to enter the height
above airport column in TBL 7-3-1 until reaching
the reported temperature from the "Reported
Temperature" row. Round this number as applicable
and then add to FAF altitude and all step-down

7-3-4

altitudes within the intermediate segment (inside of
the waypoint labeled "(IF)").
(2) Final segment: Calculate correction by
taking the MDA or DA for the approach flown and
subtract the airport elevation. Use this number to
enter the height above airport column in TBL 7-3-1
until reaching the reported temperature from the
"Reported Temperature" row. Use this number or
round up to next nearest 100. Add this number to
MDA or DA, as applicable, and any applicable
step-down fixes in the final segment.
(3) Missed Approach Segment: Calculate
the correction by taking the final MA holding altitude
and subtract the airport elevation. Use this number to
enter the height above airport column in TBL 7-3-1
until reaching the reported temperature from the

Cold Temperature Barometric Altimeter Errors, Setting Procedures and Cold Temperature
Airports (CTA)