A rotary winged training flight requests an 'air taxi' type procedure at a twred airport, creating some confusion regarding the 'air taxi' request at azo, mi.

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Attributes
ACN	518161
Time
Date	200107
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : azo.airport
State Reference	MI
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : azo.tower
Operator	general aviation : instructional
Make Model Name	Helicopter
Operating Under FAR Part	Part 91
Flight Phase	ground : parked ground : taxi
Person 1
Affiliation	other
Function	instruction : instructor
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 55 flight time total : 6500 flight time type : 800
ASRS Report	518161
Person 2
Affiliation	other
Function	instruction : trainee
Events
Anomaly	non adherence other other anomaly other spatial deviation
Independent Detector	other controllera other controllerb other flight crewa other flight crewb
Resolutory Action	controller : issued advisory
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Environmental Factor Airport Aircraft Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Student requested an air taxi to other side of airport and controller issued clearance via txwys. Controller did not seem to understand air taxi versus hover taxi. After student started to air taxi, controller #2 came on with clearance and no other aircraft were involved. Controller stated that airport had a policy of only hard surface operations. I explained it was hard to air taxi via a surface taxi route with sharp turns at the speed required. The controller then implied that there would be no more air taxi operations at the airport.

Original NASA ASRS Text

Title: A ROTARY WINGED TRAINING FLT REQUESTS AN 'AIR TAXI' TYPE PROC AT A TWRED ARPT, CREATING SOME CONFUSION REGARDING THE 'AIR TAXI' REQUEST AT AZO, MI.

Narrative: STUDENT REQUESTED AN AIR TAXI TO OTHER SIDE OF ARPT AND CTLR ISSUED CLRNC VIA TXWYS. CTLR DID NOT SEEM TO UNDERSTAND AIR TAXI VERSUS HOVER TAXI. AFTER STUDENT STARTED TO AIR TAXI, CTLR #2 CAME ON WITH CLRNC AND NO OTHER ACFT WERE INVOLVED. CTLR STATED THAT ARPT HAD A POLICY OF ONLY HARD SURFACE OPS. I EXPLAINED IT WAS HARD TO AIR TAXI VIA A SURFACE TAXI RTE WITH SHARP TURNS AT THE SPD REQUIRED. THE CTLR THEN IMPLIED THAT THERE WOULD BE NO MORE AIR TAXI OPS AT THE ARPT.

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.