Y landed on occupied runway over X. Runway incursion. System error.

Attributes
ACN	272690
Time
Date	199406
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : isp
State Reference	NY
Altitude	agl bound lower : 0 agl bound upper : 100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : isp
Operator	general aviation : instructional
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	ground other : taxi
Flight Plan	None
Aircraft 2
Operator	general aviation : personal
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	descent : approach landing other
Flight Plan	None
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : cfi
Experience	flight time last 90 days : 180 flight time total : 1810 flight time type : 400
ASRS Report	272690
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : student
Events
Anomaly	conflict : ground critical conflict : nmac incursion : runway non adherence : published procedure non adherence : required legal separation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 0 vertical : 100
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Reporter was in a C-172 holding short of active runway 33L. The student was cleared for takeoff. While taking the runway and checking visually the final approach, another C-172 was observed on short final (less than 1/8 mi). The reporter instructed the student to clear the runway straight ahead onto runway 10. The airborne C-172 passed over the reporter's aircraft and landed approximately 1000 ft beyond. The reporter's aircraft repositioned to hold short of the active and advised the tower of the avoiding action. It was cleared into position and when the landing C-172 was clear of the runway, given takeoff clearance. Upon return, reporter was asked to contact tower and it was determined that both aircraft were cleared and the duty controller felt there was adequate separation to allow the reporter's aircraft to takeoff. The duty controller was undergoing training and made an understandable mistake. It is unclr why the pilot of the landing aircraft continued his approach and landed over another aircraft rather than abort the approach but there was no injury or damage and no further action is being taken by the reporter or ATC.

Original NASA ASRS Text

Title: Y LANDED ON OCCUPIED RWY OVER X. RWY INCURSION. SYS ERROR.

Narrative: RPTR WAS IN A C-172 HOLDING SHORT OF ACTIVE RWY 33L. THE STUDENT WAS CLRED FOR TKOF. WHILE TAKING THE RWY AND CHKING VISUALLY THE FINAL APCH, ANOTHER C-172 WAS OBSERVED ON SHORT FINAL (LESS THAN 1/8 MI). THE RPTR INSTRUCTED THE STUDENT TO CLR THE RWY STRAIGHT AHEAD ONTO RWY 10. THE AIRBORNE C-172 PASSED OVER THE RPTR'S ACFT AND LANDED APPROX 1000 FT BEYOND. THE RPTR'S ACFT REPOSITIONED TO HOLD SHORT OF THE ACTIVE AND ADVISED THE TWR OF THE AVOIDING ACTION. IT WAS CLRED INTO POS AND WHEN THE LNDG C-172 WAS CLR OF THE RWY, GIVEN TKOF CLRNC. UPON RETURN, RPTR WAS ASKED TO CONTACT TWR AND IT WAS DETERMINED THAT BOTH ACFT WERE CLRED AND THE DUTY CTLR FELT THERE WAS ADEQUATE SEPARATION TO ALLOW THE RPTR'S ACFT TO TKOF. THE DUTY CTLR WAS UNDERGOING TRAINING AND MADE AN UNDERSTANDABLE MISTAKE. IT IS UNCLR WHY THE PLT OF THE LNDG ACFT CONTINUED HIS APCH AND LANDED OVER ANOTHER ACFT RATHER THAN ABORT THE APCH BUT THERE WAS NO INJURY OR DAMAGE AND NO FURTHER ACTION IS BEING TAKEN BY THE RPTR OR ATC.

Data retrieved from NASA's ASRS site as of July 2007 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.