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Atlas/ ELOS Findings/ ST11148IB-T-S-5 Regulatory

FAA · Equivalent Level of Safety Finding

quivalent Level of Safety (ELOS) Finding for Equipment, Systems, and Installation Requirements: Use of ARAC Recommendations to 14 CFR 25.1301 and 25.1309

ST11148IB-T-S-5 Regulatory Current Issued 08/27/2025 PDF ↗

What is an ELOS finding?

An Equivalent Level of Safety finding allows a project to deviate from a specific 14 CFR requirement when the alternative is shown to provide equivalent safety. Project-specific — not a precedent for other applicants.

14 CFR sections deviation applies to

  • § 21.21
  • § 25.1301
  • § 25.1309