Definition
A federal aviation regulation that sets the operating rules for using Enhanced Flight Vision Systems (EFVS) during instrument approaches. It defines two main allowances: operating below the published Decision Altitude, Decision Height, or Minimum Descent Altitude down to 100 feet above the touchdown zone elevation using EFVS to see required visual references, and conducting the entire landing using EFVS when authorized. It specifies the equipment, training, visibility, and visual reference requirements that must be met before a pilot may descend below standard approach minimums using an EFVS.
Plain English
This is the FAA rule that says when and how a pilot can use a special infrared or enhanced vision system to keep descending on an instrument approach even when the runway isn't yet visible to the naked eye. It lists what equipment, training, and visibility conditions are needed to do this legally.
Context Anchor
Seen in instrument procedure and altitude discussions when the handbook explains descent below published approach minimums using enhanced flight vision equipment.
Derivation
CFR' stands for Code of Federal Regulations. Title 14 covers aeronautics and space. Part 91 contains the general operating and flight rules for civil aircraft. The § symbol means 'section.' So '14 CFR § 91.176' is simply 'Title 14, Part 91, Section 176' of the federal rulebook -- the specific section that addresses EFVS approach operations.
Why Pilots Care
Pilots must follow its specific requirements to remain legal and safe when choosing a straight-in landing instead of a full traffic pattern at an airport without a tower.
Intuition Check
Do not read 14 CFR § 91.176 as just a handbook reference. It is a specific federal rule, so it affects what a pilot is legally allowed to do.
Example Sentence 1
Because the aircraft was equipped and the crew was trained per 14 CFR § 91.176, they were able to continue the approach below the published minimums using the enhanced vision system.
Example Sentence 2
Compliance with 14 CFR § 91.176 allowed the flight to complete the approach without entering the traffic pattern.