AI.II.P.K1FAA-S-ACS-25 · Nov 2023Knowledge

Proficient use of appropriate performance charts, tables, graphs, or other data to dete...

ACS element text (the applicant demonstrates understanding of)

Proficient use of appropriate performance charts, tables, graphs, or other data to determine airplane performance and limitations for all phases of flight.

Bottom line

The pilot should be thoroughly familiar with the airplane’s performance capabilities and limitations in order to make an informed takeoff decision as part of the preflight planning. To be avoided above all is attempting to continue flight when it is not within the airplane’s performance capability to do so.

Key numbers

Key numbers for Proficient use of appropriate performance charts, tables, graphs, or other data to dete...
NumberWhat it means
50 fpm rate of climb with one engine inoperativeSE service ceiling
100 fpm with both engines operatingAll-engine ceiling
50 feet above takeoff elevation under ideal circumstancesAccelerate-go
minimum speed for intentional engine failuresVsse

FAA references

  1. AFH ch. 13 (pp. 13-11–13-12) — FAA-H-8083-3C
  2. FAA-P-8740-66, Flying Light Twins Safely — FAA-P-8740-66
  3. PHAK ch. 11 (pp. 11-19–11-20) — FAA-H-8083-25C (2023)
  4. PHAK ch. 9 (p. 9-4) — FAA-H-8083-25C (2023)
  5. RMH App. C (p. C-1) — FAA-H-8083-2A
  6. AIH ch. 1 (p. 1-20) — FAA-H-8083-9B
Members lesson

Build understanding you can use

Unlock the full lesson and continue studying this element.

  • Full teaching sections: What it is; Key points; Rules and numbers; How it is done
  • Check your understanding with answers you can reveal
  • Common mistakes paired with the FAA facts that correct them
View membership options