Communication misunderstanding results in runway incursion at hpn.

Attributes
ACN	583532
Time
Date	200306
Day	Thu
Place
Locale Reference	airport : hpn.airport
State Reference	NY
Altitude	agl single value : 0
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : hpn.tower
Operator	general aviation : personal
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	ground : position and hold ground : taxi
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : hpn.tower
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	descent : approach landing : go around
Person 1
Affiliation	other
Function	instruction : instructor oversight : pic
Qualification	pilot : cfi pilot : instrument
Experience	flight time last 90 days : 40 flight time total : 940 flight time type : 580
ASRS Report	583532
Person 2
Affiliation	other
Function	flight crew : single pilot instruction : trainee
Events
Anomaly	conflict : ground less severe incursion : runway non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance flight crew : executed go around
Consequence	faa : investigated
Miss Distance	horizontal : 2400
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

After completing our run-up, we taxied to the hold short line of runway 16. My student was at the controls in the left seat. He called the tower saying 'skyhawk holding short runway 16, ready for takeoff.' the tower replied with 'skyhawk, taxi up and hold.' I thought the tower meant taxi into position and hold. I wanted to verify what the tower had meant, when I heard him say to an inbound plane 'you are cleared to land, there will be a departure prior to your arrival.' this led me to believe that tower wanted us to be ready to go, and we crossed the hold short line. Tower then told us to stop and clear the runway. We complied immediately, but the inbound plane elected to go around. Factors contributing to this incident were the use of non-standard phraseology by the tower, and my failure to verify whether he meant 'hold short' or 'taxi into position and hold.' to avoid this type of situation in the future, I will always ask if I am not sure of a clearance -- especially before entering the active runway.

Original NASA ASRS Text

Title: COM MISUNDERSTANDING RESULTS IN RWY INCURSION AT HPN.

Narrative: AFTER COMPLETING OUR RUN-UP, WE TAXIED TO THE HOLD SHORT LINE OF RWY 16. MY STUDENT WAS AT THE CTLS IN THE L SEAT. HE CALLED THE TWR SAYING 'SKYHAWK HOLDING SHORT RWY 16, READY FOR TKOF.' THE TWR REPLIED WITH 'SKYHAWK, TAXI UP AND HOLD.' I THOUGHT THE TWR MEANT TAXI INTO POS AND HOLD. I WANTED TO VERIFY WHAT THE TWR HAD MEANT, WHEN I HEARD HIM SAY TO AN INBOUND PLANE 'YOU ARE CLRED TO LAND, THERE WILL BE A DEP PRIOR TO YOUR ARR.' THIS LED ME TO BELIEVE THAT TWR WANTED US TO BE READY TO GO, AND WE CROSSED THE HOLD SHORT LINE. TWR THEN TOLD US TO STOP AND CLR THE RWY. WE COMPLIED IMMEDIATELY, BUT THE INBOUND PLANE ELECTED TO GO AROUND. FACTORS CONTRIBUTING TO THIS INCIDENT WERE THE USE OF NON-STANDARD PHRASEOLOGY BY THE TWR, AND MY FAILURE TO VERIFY WHETHER HE MEANT 'HOLD SHORT' OR 'TAXI INTO POS AND HOLD.' TO AVOID THIS TYPE OF SIT IN THE FUTURE, I WILL ALWAYS ASK IF I AM NOT SURE OF A CLRNC -- ESPECIALLY BEFORE ENTERING THE ACTIVE RWY.

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.