2024-18511. System Safety Assessments

Table 1—Acronyms Frequently Used in This Document

Acronym	Definition
AC	Advisory Circular.
AD	Airworthiness Directive.
AFM	Airplane Flight Manual.
ALS	Airworthiness Limitations section.
ARAC	Aviation Rulemaking Advisory Committee.
ASAWG	Airplane Level Safety Analysis Working Group.
CAST	Commercial Aviation Safety Team.
CMR	Certification Maintenance Requirement.
CS-25	Certification Specifications for Large Aeroplanes (issued by EASA).
CSL+1	Catastrophic Single Latent Failure Plus One (a failure condition).
EASA	European Union Aviation Safety Agency.
ELOS	Equivalent Level of Safety.
EWIS	Electrical Wiring Interconnection System.
FCHWG	Flight Controls Harmonization Working Group.
FTHWG	Flight Test Harmonization Working Group.
ICA	Instructions for Continued Airworthiness.
LDHWG	Loads and Dynamics Harmonization Working Group.
NTSB	National Transportation Safety Board.
PPIHWG	Powerplant Installation Harmonization Working Group.
SDAHWG	System Design and Analysis Harmonization Working Group.
SLF	Significant Latent Failure.
SSA	System Safety Assessment.