Definition 1 of 2
Definition
An altitude shown on an instrument approach chart profile view that is advisory rather than mandatory. It is depicted in roman type (not bold and not underlined) and suggests an altitude that helps the pilot maintain a stable descent profile, but it does not legally bind the pilot to fly at that altitude.
Plain English
An altitude printed on the approach chart that the chart designer suggests you fly, but you are not required to. It is a helpful guideline, not a rule.
Context Anchor
Seen on the profile view of an instrument approach chart, where altitudes help the pilot picture the descent path from fix to fix.
Derivation
Recommended comes from the idea of advising or suggesting a course of action. Altitude means height above a stated reference, usually mean sea level on instrument charts. Together, the phrase points to a suggested height, not necessarily a required one.
Why Pilots Care
Using it supports a stable descent, reduces the chance of flying too low or too high, and improves overall approach safety.
Intuition Check
Do not read recommended as required. In this context, recommended means suggested for a good flight path, while required altitudes are shown or stated as limits you must follow.
Example Sentence 1
The chart showed 2,000 feet as a recommended altitude crossing the final approach fix, so the pilot aimed for it to keep the descent stable.
Example Sentence 2
Although not required, the crew flew the recommended altitude to maintain a comfortable descent rate.