SAE ARP4418B-2018 PDF

Scope: This ARP outlines recommended practices to quantify the concentrations of a subset of bleed air contaminant marker compounds on an aircraft propulsion engine or APU prior to delivery and installation on civil and military aircraft. Testing is specified during steady state (non-transient) operation only@ in a ground level test bed. Included are recommended test setup@ test procedures@ techniques for sampling ambient air and bleed air@ and one or more specific analytical methodologies for each of the suggested bleed air contaminant marker compounds at quantification levels@ given practical constraints. Purpose To provide test procedures to quantify bleed air contaminant concentrations in the air supplied by aircraft propulsion engines and APUs in a ground level test bed.

SAE ARP4418B-2018 history

2018 SAE ARP4418B-2018 (R) Procedure for Sampling and Measurement of Engine and APU Generated Contaminants in Bleed Air Supplies from Aircraft Engines
2008 SAE ARP4418A-2008 (R) Procedure for Sampling and Measurement of Engine and APU Generated Contaminants in Bleed Air Supplies from Aircraft Engines
1995 SAE ARP4418-1995 Procedure for Sampling and Measurement of Engine Generated Contaminants in Bleed Air Supplies from Aircraft Engines under Normal Operating Conditions