Definition
The standardized methods a pilot uses to transition from the inbound course onto the racetrack-shaped holding pattern at the holding fix. The three recognized entries are direct, parallel, and teardrop, and the correct one is selected based on the aircraft's heading relative to the holding course as it arrives at the fix.
Plain English
These are the three set ways to fly from your current heading into a holding pattern, depending on which direction you're approaching the holding point from. You pick one of three entry styles so you end up flying the racetrack pattern correctly.
Context Anchor
Used in instrument flying when a pilot is cleared to hold and must decide how to enter the holding pattern before reaching the holding fix.
Derivation
“Holding” comes from the ordinary idea of keeping something in place. In aviation, a holding pattern keeps an aircraft waiting in a specific area. “Entry procedures” means the planned ways to get into that waiting pattern.
Why Pilots Care
Correct entry keeps the aircraft inside protected airspace, maintains separation from other traffic, and prevents the pilot from becoming disoriented while waiting for clearance.
Intuition Check
Do not think of “entry” as simply turning into the hold any way that seems convenient. In this context, holding entry procedures are standardized methods for joining the pattern based on the direction you arrive from.
Example Sentence 1
After receiving the holding clearance, the pilot determined that a teardrop entry was appropriate based on the inbound heading.
Example Sentence 2
Using the proper holding entry procedures allowed the aircraft to remain within the protected airspace while awaiting an approach clearance.