A DA20 instructor pilot reported that he and his student pilot were cleared onto a runway but after ...

Narrative:

My student was about to perform his first short field takeoff. As such; we requested the full length of the runway; so he could see what 'all available runway length' looked like. I told my student that when he called ready for departure; to request 'a slight delay in position' on the runway to let the local controller know about us pausing momentarily on the runway. My student called ready for departure as I told him to; and the local controller told us to hold short; and asked us how long a short delay is. I told my student to say 15 seconds; and he did so. We were then 'cleared for takeoff; traffic 2 (I don't remember exactly the mileage; but it was around 2) mile left base.' student then brought up the power; and taxied across the hold short lines. A moment later; the local controller excitedly came back and told us to hold short of the runway. My student looked at me; and I told him to say unable; and my student did. Local control then came back again telling us to hold short of the runway; and again; my student said 'unable.' I then said to my student 'my radio' and told the local controller that we were unable to hold short of the runway; as we had already crossed the hold short lines. (The entire plane was across the hold short lines). The local controller came back; 'I understand that sir; but hold position; and hold short of the runway;' to which I replied that we will hold position. Seconds later; my student and I observed an airplane on short final to our departing runway. The local controller directed this airplane to land long; to expect to turn off at the end; and pointed us (the airplane past the hold short lines; on the piece of pavement leading up to the runway surface) and that we would be holding position. The arriving traffic was a locally based airplane; and seemed very non pulsed by the whole thing; and replied that he would land long; with no concerns by him; whatsoever...we then were cleared for takeoff; and as we cleared the delta airspace; we received a 'thanks for your help back there' from the local controller. Both my student and I were certain we received a takeoff clearance prior to crossing the hold short lines. Possible causes for the incursion was either an airplane between us and the airplane the tower called out to us in our first takeoff clearance that he forgot about; or said traffic turning final a lot sooner than anticipated. I personally think that it was the later...

Original NASA ASRS Text

Title: A DA20 Instructor Pilot reported that he and his Student Pilot were cleared onto a runway but after crossing the hold short line were told to hold their position. Another aircraft flew over them and landed long.

Narrative: My student was about to perform his first short field takeoff. As such; we requested the full length of the runway; so he could see what 'all available runway length' looked like. I told my student that when he called ready for departure; to request 'a slight delay in position' on the runway to let the Local Controller know about us pausing momentarily on the runway. My student called ready for departure as I told him to; and the Local Controller told us to hold short; and asked us how long a short delay is. I told my student to say 15 seconds; and he did so. We were then 'cleared for takeoff; traffic 2 (I don't remember exactly the mileage; but it was around 2) mile left base.' Student then brought up the power; and taxied across the hold short lines. A moment later; the Local Controller excitedly came back and told us to hold short of the runway. My student looked at me; and I told him to say unable; and my student did. Local Control then came back again telling us to hold short of the runway; and again; my student said 'unable.' I then said to my student 'my radio' and told the Local Controller that we were unable to hold short of the runway; as we had already crossed the hold short lines. (The entire plane was across the hold short lines). The Local Controller came back; 'I understand that sir; but hold position; and hold short of the runway;' to which I replied that we will hold position. Seconds later; my student and I observed an airplane on short final to our departing runway. The Local Controller directed this airplane to land long; to expect to turn off at the end; and pointed us (the airplane past the hold short lines; on the piece of pavement leading up to the runway surface) and that we would be holding position. The arriving traffic was a locally based airplane; and seemed very non pulsed by the whole thing; and replied that he would land long; with no concerns by him; whatsoever...We then were cleared for takeoff; and as we cleared the Delta airspace; we received a 'thanks for your help back there' from the Local Controller. Both my student and I were certain we received a takeoff clearance prior to crossing the hold short lines. Possible causes for the incursion was either an airplane between us and the airplane the Tower called out to us in our first takeoff clearance that he forgot about; or said traffic turning final a lot sooner than anticipated. I personally think that it was the later...

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	883062
Time
Date	201004
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	DA20-C1 Eclipse
Operating Under FAR Part	Part 91
Flight Phase	Takeoff Taxi
Route In Use	None
Flight Plan	None
Person 1
Function	Instructor
Qualification	Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Commercial Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 13 Flight Crew Total 345 Flight Crew Type 20
Events
Anomaly	ATC Issue All Types Conflict Ground Conflict Less Severe Deviation - Procedural Published Material / Policy

A DA20 instructor pilot reported that he and his student pilot were cleared onto a runway but after crossing the hold short line were told to hold their position. Another aircraft flew over them and landed long.