Narrative:

The private pilot training flight departed and made an uneventful landing. After a full stop landing we taxied back to runway 21 for departure back to home base. While taxiing both the student pilot and instructor listened to the radios in order to clear for traffic. Taxiing up to the hold short line we noticed one aircraft was clearing the runway; while another was on downwind; both aircraft had made standard CTAF calls in accordance with the aim. Once the aircraft on downwind had landed the student made a radio call on the CTAF announcing our departure on runway 21. After the radio call we moved forward approximately 10 feet; crossing the hold short line for runway 21. At that moment we were notified by an aircraft on short final of their position and intention to land on runway 21. We subsequently stopped taxiing immediately; stopping about 10 feet past the hold short line. Shortly after; about 10 seconds; we observed the cessna on final accomplish a landing on runway 21. To recap the radio monitoring: while the non-factor aircraft on downwind was observed and heard on the radio no other subsequent radio calls were heard. The student and I cleared final; completed a departure briefing in about 10 seconds; then proceeded to make a radio call that we were departing. The moment we started rolling forward was when we were notified by the factor aircraft on final. Furthermore; prior to departure; we completed s-turns while taxiing to clear for traffic. While not a violation of the regulations; this points to the importance of flying standard patterns at uncontrolled airfield in accordance with the aim.

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Original NASA ASRS Text

Title: C-172 instructor pilot reported a failure in CTAF communication by another aircraft on short final when they reported taking active runway and crossing the hold line.

Narrative: The private pilot training flight departed and made an uneventful landing. After a full stop landing we taxied back to runway 21 for departure back to home base. While taxiing both the student pilot and instructor listened to the radios in order to clear for traffic. Taxiing up to the hold short line we noticed one aircraft was clearing the runway; while another was on downwind; both aircraft had made standard CTAF calls in accordance with the AIM. Once the aircraft on downwind had landed the student made a radio call on the CTAF announcing our departure on runway 21. After the radio call we moved forward approximately 10 feet; crossing the hold short line for runway 21. At that moment we were notified by an aircraft on short final of their position and intention to land on runway 21. We subsequently stopped taxiing immediately; stopping about 10 feet past the hold short line. Shortly after; about 10 seconds; we observed the Cessna on final accomplish a landing on runway 21. To recap the radio monitoring: while the non-factor aircraft on downwind was observed and heard on the radio no other subsequent radio calls were heard. The student and I cleared final; completed a departure briefing in about 10 seconds; then proceeded to make a radio call that we were departing. The moment we started rolling forward was when we were notified by the factor aircraft on final. Furthermore; prior to departure; we completed S-turns while taxiing to clear for traffic. While not a violation of the regulations; this points to the importance of flying standard patterns at uncontrolled airfield in accordance with the AIM.

Data retrieved from NASA's ASRS site 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.