Browse Standards ARP4418
Historical Issued 1995-08-01

Procedure for Sampling and Measurement of Engine Generated Contaminants in Bleed Air Supplies From Aircraft Engines Under Normal Operating Conditions ARP4418

The following individual engine compressor generated contaminants are addressed by this SAE Aerospace Recommended Practice (ARP): a. carbon dioxide; b. hydrogen fluoride; c. organic material; d. carbon monoxide; e. acrolein; f. respirable particles; g. oxides of nitrogen; and h. formaldehyde. For reference purposes, information is also given on the current maximum allowable engine bleed air concentration limits for each of these contaminants, as stated in the latest issue of AIR4766. Recommended techniques for the sampling and sample transfer are given, together with the specific analytical methodology and acceptable alternate referenced analytical methodology for each of the above contaminants. Recommendations are also made for an engine test format and for the allowance of ambient air quality on the engine measured contaminant concentration levels. The previous list of contaminants are considered appropriate for the certification and passenger safety requirements of both civil and military aircraft.
ARP4418A
2008-01-07
Latest
Revised
ARP4418
1995-08-01
Historical
Issued

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Purchase more aerospace standards and aerospace material specifications and save! AeroPaks off a customized subscription plan that lets you pay for just the documents that you neeed, when you need them.

Get Involved

Want to participate in updating this standard?

X