AA.I.A.K14FAA-S-ACS-11A · Nov 2023Knowledge
Fire & smoke detection, protection, and suppression–powerplant, cargo and passenger com...
Fire & smoke detection, protection, and suppression–powerplant, cargo and passenger compartments, lavatory, pneumatic and environmental, electrical/avionics, and batteries (on aircraft and personal electronic devices).
Bottom line
By the time a pilot becomes aware of an in-flight engine compartment fire, it usually is well developed. The initial indication of an electrical fire is usually the distinct odor of burning insulation.
Key numbers
| Number | What it means |
|---|---|
| 0.3 grams or less per lithium metal cell (FAA recommendation for batteries of devices) | Lithium cell |
| 2.7 watt-hours per lithium ion cell (FAA recommendation for batteries of devices) | Lithium ion |
FAA references
- AFH ch. 18 (pp. 18-9–18-10) — FAA-H-8083-3C
- AC 91.21-1, para. 10.5 — AC No: 91.21-1D
- AC 120-76, para. 10.3.3.1 — AC No: 120-76D
- AC 91.21-1, para. 7.2.3 — AC No: 91.21-1D
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