AMTStandards.orgAviation maintenance

Quick reference

Terms on this page 6

Dotted in the text; open one for its entry, or see the glossary.

Readings in the sources

3 short readings for AF-M, a topic at a time: what the test asks, and the sections that cover it. Sign in to tick them off as you read.

  • FAA-H-8083-31B Aviation Maintenance Technician Handbook — Airframe

  1. Fire types and zones K1, K2, S9, S12, S3

    For the test: Fire types and zones; detection and warning; continuous-loop systems

    • FAA-H-8083-31B Ch. 17: Detectors · Continuous-Loop Systems · Pneumatic Continuous-Loop Systems · Flame Detectors

  2. Smoke and carbon monoxide detection K4, S4, S5

    • FAA-H-8083-31B Ch. 17: Smoke Detectors · Smoke Detector System · Carbon Monoxide Detectors · Lavatory Smoke Detector System

  3. Agents; extinguishing system types; maintenance K5–K7, S2, S8, S11

    • FAA-H-8083-31B Ch. 17: Fire Extinguishing Systems · Installed Fire Extinguishing Systems · CO2 Fire Extinguishing Systems · Extinguisher Types · Containers · Fire Extinguisher System Maintenance

Source: FAA-H-8083-31B, fire protection chapter. Public domain. Pointers only.

Chapter and section verified against FAA-H-8083-31B, 2023 edition, on 28 August 2026. Page numbers are deliberately not cited: they move between printings, and a citation that rots silently is worse than a coarser one that stays true. Checked by our handbook citation check against our index of the handbook's chapters and sections.

Elements The ACS asks for Where in FAA-H-8083-31B Read it for
K1, K2, S9, S12, S3 Fire types and zones; detection and warning; continuous-loop systems Ch. 17 — Detectors; Continuous-Loop Systems; Pneumatic Continuous-Loop Systems; Flame Detectors How a loop actually detects. AF-M Concepts §2
K3, S7, S6 Detection maintenance and inspection; overheat detectors Ch. 17 — Detectors; Continuous-Loop Systems —
K4, S4, S5 Smoke and carbon monoxide detection Ch. 17 — Smoke Detectors; Smoke Detector System; Carbon Monoxide Detectors; Lavatory Smoke Detector System The CO path — AF-G Concepts §3
K5–K7, S2, S8, S11 Agents; extinguishing system types; maintenance Ch. 17 — Fire Extinguishing Systems; Installed Fire Extinguishing Systems; CO2 Fire Extinguishing Systems; Extinguisher Types; Containers; Fire Extinguisher System Maintenance Agent classes and their limits
S8, S11 Cylinder hydrostatic dates; discharge cartridge Ch. 17 — Fire Extinguisher System Maintenance; Containers AF-M Concepts §3 — time-based airworthiness
S10 Operational check of a detection system Ch. 17 — Fire Extinguisher System Maintenance The one station element
S13 Press-to-test, and troubleshooting Ch. 17 — Fire Extinguisher System Maintenance What press-to-test actually proves. AF-M Concepts §4
R1 Squib circuits Ch. 17 — Containers; Fire Extinguishing Systems AF-M Concepts §1 — read this first
R2, R3 PPE when testing; extinguishing agents Ch. 17 — Extinguisher Types The safety data sheet governs

The operative sources

  • The aircraft maintenance manual's squib safing procedure — R1.
  • The bottle manufacturer's data for hydrostatic intervals, cartridge life and charge pressure against temperature.

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