FlyCurrentFLYCURRENT
AI.II.E.K1eFAA-S-ACS-25 · Nov 2023Knowledge

e. Fuel, oil, and hydraulic

ACS element text (the applicant demonstrates understanding of)

Airplane systems, including: e. Fuel, oil, and hydraulic

Bottom line

Fuel-related issues are among the top four causes of general aviation fatal accidents. Pilots still experience fuel starvation or fuel exhaustion. During preflight and post-flight inspections, pilots must verify fluid levels including hydraulic fluid, engine oil, and fuel.

Key numbers

Key numbers for e. Fuel, oil, and hydraulic
NumberWhat it means
fuel-related issues rank among the top four causes of general aviation fatal accidentsTop 4 fatal causes
mixture to idle cut-off and fuel selector shutoff valve OFF, unless the AFM/POH directs otherwiseFire first step

FAA references

  1. RMH ch. 3 (p. 3-4) — FAA-H-8083-2A
  2. PHAK ch. 17 (p. 17-13) — FAA-H-8083-25C (2023)
  3. AFH ch. 18 (p. 18-9) — FAA-H-8083-3C
  4. AFH ch. 9 (p. 9-29) — FAA-H-8083-3C
  5. SEA ch. 7 (p. 7-8) — FAA-H-8083-23
  6. SEA ch. 4 (p. 4-1) — FAA-H-8083-23
  7. SEA ch. 7 (p. 7-4) — FAA-H-8083-23
  8. PHAK ch. 2 (p. 2-10) — FAA-H-8083-25C (2023)
  9. 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; 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