Line Up and Wait - The Phrase the FAA Changed After a Generation of Runway Incursion Accidents

“Line Up and Wait” replaced “position and hold” across U.S. aviation in 2010, ending decades of ambiguous runway phraseology tied to a rising runway incursion accident rate. The new phrase aligns with the international ICAO standard, eliminates a word that carried three conflicting meanings, and puts the required action and restriction directly in the instruction itself. Every pilot operating at a towered airport needs to know exactly what this clearance means, how to read it back, and when to speak up if the authorization never comes.

Why Did the FAA Change “Position and Hold” to “Line Up and Wait”?

The old phraseology had a structural flaw. The word “hold” was doing three different jobs in American aviation.

In instrument flying, a hold is a racetrack pattern flown over a fix - sometimes for minutes, sometimes longer. In taxi instructions, “hold short” means stop and don’t cross. In the departure sequence, “position and hold” meant something nearly opposite: come onto the runway and get ready, but don’t go. Three meanings, one word, three contexts.

Most of the time the surrounding language was enough to disambiguate. But most of the time is not an acceptable safety margin on a runway.

The National Transportation Safety Board had flagged the issue for years as runway incursions climbed through the 1990s and into the 2000s. Communication failures were a consistent thread - pilots who believed they had a takeoff clearance when they didn’t, crews filling in blanks from garbled transmissions, controllers assuming a readback confirmed understanding when it hadn’t.

The FAA changed the phraseology in 2010. The change also brought U.S. aviation into alignment with ICAO, the International Civil Aviation Organization, which had used “Line Up and Wait” as the international standard long before the American switch. Pilots transitioning into U.S. airspace from Europe, Asia, and South America had been quietly confused by the American exception for years.

The new phrase is also more descriptive. “Line up” tells you the action. “Wait” tells you the restriction. Both pieces of information are in the instruction.

What Does a Line Up and Wait Clearance Actually Mean?

When a controller issues this clearance, you do not know the specific reason - and you don’t need to. The runway may not be clear. A landing aircraft may still be rolling toward the exit. The controller may be sequencing traffic from another direction. None of that changes your job.

Taxi onto the runway. Roll to the centerline. Stop completely.

Not slow down. Stop.

While you’re sitting there, use the time. Set your heading indicator to the runway heading. Complete any remaining items on your before-takeoff checklist. Confirm your transponder is showing altitude. Check your lights. Verify you’re on the correct tower frequency.

What you do not do is inch forward, begin your roll, or assume that a few seconds of silence imply authorization. Nothing changes until you hear two specific words from the controller: “cleared for takeoff.”

How Long Should You Wait Before Querying the Controller?

If you have been holding in position for approximately 90 seconds to two minutes without a takeoff clearance, query the controller. This is not optional good practice - it is the right call.

A simple transmission works: “Tower, Cessna seven three seven hotel foxtrot, holding in position, runway two seven.”

Controllers manage a great deal simultaneously. Frequencies get congested. Handoff gaps can create brief communication voids. A controller can be momentarily absorbed in a developing situation elsewhere on the field. You are your own advocate on that runway. Speak up.

What Is the Correct Readback for Line Up and Wait?

The FAA’s Aeronautical Information Manual (AIM) is clear: pilots are required to read back all runway assignments and hold short instructions. This is not optional guidance.

When a controller says: “Cessna seven three seven hotel foxtrot, runway two seven, Line Up and Wait,”

The correct readback is: “Runway two seven, Line Up and Wait, Cessna seven three seven hotel foxtrot.”

The runway number leads the readback - not your call sign, not a conversational acknowledgment. If a transmission gets stepped on or the controller catches only a fragment of what you said, you want the runway number to be the most likely fragment they hear.

Repeat the instruction using the same words. “Line Up and Wait” should appear verbatim in your readback. “Wilco” and paraphrases are not acceptable substitutes when the clearance involves a runway.

Close with your call sign so the controller and everyone else on frequency can confirm who read back what.

Why Does the Readback Matter So Much?

Your readback is not a private exchange between you and the controller. It goes out over the frequency. Every pilot holding short, every aircraft in the pattern, and every crew on the taxiway is listening. When you read back “runway two seven, Line Up and Wait,” a crew holding short of that runway adjusts their mental picture. An aircraft on final knows the runway will have traffic.

Radio in the tower environment is a shared situational awareness tool.

The failure mode to understand is called the readback-hearback problem. The controller issues a clearance. The pilot reads it back. The controller hears the readback, believes the instruction was confirmed, and moves on. But somewhere in that loop, something went wrong - a number transposed, a runway misheard - and neither side caught it.

The Comair Flight 5191 accident at Lexington, Kentucky in 2006 is one of the most consequential examples of this failure. That crew lined up on the wrong runway. The runway was too short. 49 people were killed. The readback did not alert the controller to the discrepancy.

The lesson is specific and actionable: when you read back a runway assignment, you are actively confirming to yourself and to the system that you understand exactly where you are and what surface you are about to use. If anything doesn’t match - the runway number, the heading indicator, the taxiway sign you just passed - stop. Ask. Say “confirm runway two seven” and wait for an answer.

No controller will be annoyed by a pilot who takes a moment to verify position.

How Do You Prepare for Your First Towered Airport?

If you’ve been training at a non-towered field, the tower environment can feel fast and formal. Breaking it down by function helps.

Each frequency has one job. Ground control handles surface movement. Tower handles takeoffs and landings. Approach and departure handle the surrounding airspace. Understand the function, and the structure becomes manageable.

Before you fly into a towered airport for the first time, listen. Services like LiveATC.net let you monitor real tower frequencies from anywhere. Pull up a busy regional airport and listen for 20 minutes. Get the rhythm. Notice how professional readbacks sound. Notice when something comes across as unclear. You’re building pattern recognition before you ever key the mic.

When you call ground, keep it simple: call sign, position on the field, destination, and current ATIS. “Ground, Cessna seven three seven hotel foxtrot, main ramp, request taxi, runway two seven, information bravo.” Short and factual.

When you receive taxi instructions, write down the route or follow it on your moving map. Runway incursions happen in the middle of taxi routes when a pilot gets task-saturated and misses a hold short instruction. If the taxi clearance is complex and you’re not certain you caught all of it, say “say again the taxi route” before you move.

When you reach the hold short line, stop completely and look both ways - in both directions - before your wheels approach the line. Know your markings: two solid yellow lines closest to you (your side) and two dashed yellow lines on the runway side. If you can see the dashes, you have already passed the hold short.

What Does a Textbook Line Up and Wait Sequence Look Like?

Holding short of runway two seven, runup complete.

Controller: “Cessna seven three seven hotel foxtrot, runway two seven, Line Up and Wait.”

Pilot readback: “Runway two seven, Line Up and Wait, Cessna seven three seven hotel foxtrot.”

Look both ways. Verify the runway is clear - not a glance, actually look. Is there an aircraft rolling out in the other direction? Is anything still clearing at the departure end? Is there any traffic crossing at a taxiway intersection farther down the field?

Taxi onto the runway. Roll to the centerline. Stop.

Set your heading indicator to 270°. Confirm flap configuration. Verify transponder is on with altitude reporting. Check fuel selector. Scan the final approach course.

If about a minute passes with no clearance and traffic is appearing on final, speak up: “Tower, Cessna seven three seven hotel foxtrot, holding in position, confirm cleared for takeoff?”

Controller: “Cessna seven three seven hotel foxtrot, runway two seven, cleared for takeoff, wind two six zero at one two.”

Pilot readback: “Runway two seven, cleared for takeoff, Cessna seven three seven hotel foxtrot.”

Then go.

What Do Examiners Look for on the Checkride?

The Airman Certification Standards (ACS) require student pilots to demonstrate correct radio communications and compliance with ATC instructions in the airport operations area. The examiner is listening specifically for correct readbacks, proper verification of runway assignments, and current phraseology.

The examiner is evaluating judgment and discipline. Did you confirm the clearance? Did you verify the runway? Did you ask when something was unclear? Did you treat every runway crossing as the critical event it is?

Radio discipline reflects cockpit discipline. How a pilot handles the radio tells an experienced aviator a great deal about how they handle the airplane.

Key Takeaways

• “Line Up and Wait” replaced “position and hold” in 2010, aligning U.S. aviation with the long-established ICAO international standard and eliminating dangerous ambiguity in the word “hold.”
• The clearance means taxi to the centerline and stop - nothing changes until you hear “cleared for takeoff.”
• The runway number leads every readback - not your call sign - because it is the most critical piece of information and the fragment most likely to survive a blocked transmission.
• If you have been holding in position for approximately 90 seconds to two minutes without a clearance, query the controller. This is correct airmanship, not a nuisance.
• The Comair 5191 accident (Lexington, 2006, 49 fatalities) is the defining example of readback-hearback failure on a runway assignment - verify your runway, every time.