Aviation Weather HandbookFAA-H-8083-28B
Appendix C
Density Altitude Calculation
1 pagePage C-1
To determine density altitude:
1.
Set the aircraft’s altimeter to 29.92 inHg. The altimeter will indicate pressure altitude.
2.
Read the OAT.
3.
Mark the intersection of pressure altitude (diagonal) and temperature (vertical) lines on Figure C-1.
4.
Read the density altitude from the horizontal lines on Figure C-1.
Figure C-1. Density Altitude Computation Chart