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AA.I.A.K5FAA-S-ACS-11A · Nov 2023Knowledge

Oil system–capacity, allowable types of oil, quantities, and indicators.

ACS element text (the applicant demonstrates understanding of)

Oil system–capacity, allowable types of oil, quantities, and indicators.

Bottom line

If the quantity does not meet the manufacturer’s recommended operating levels, oil should be added. High oil temperature indications may signal a plugged oil line, a low oil quantity, a blocked oil cooler, or a defective temperature gauge.

Key numbers

Key numbers for Oil system–capacity, allowable types of oil, quantities, and indicators.
NumberWhat it means
several minutes or longer after starting a cold engineOil temp lag

FAA references

  1. PHAK ch. 7 (p. 7-17) — FAA-H-8083-25C (2023)
  2. AFH ch. 13 (p. 13-13) — FAA-H-8083-3C
  3. AFH ch. 13 (p. 13-5) — FAA-H-8083-3C
  4. RMH ch. 1 (p. 1-2) — FAA-H-8083-2A
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