C172 departure from tan experienced confusion regarding IFR release time.

Attributes
ACN	582522
Time
Date	200305
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : tan.airport
State Reference	MA
Altitude	agl single value : 0
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	ground : takeoff roll
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot instruction : instructor oversight : pic
Qualification	pilot : cfi
Experience	flight time last 90 days : 150 flight time total : 3000 flight time type : 2300
ASRS Report	582522
Person 2
Affiliation	other
Function	flight crew : single pilot instruction : trainee
Events
Anomaly	non adherence : clearance non adherence other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

One of my international students misunderstood the clearance for IFR flight from tan to ewb. Since tan was uncontrolled airport, my student was trying to receive clearance over the phone from bridgeport clearance. After my student received clearance, person over bridgeport asked if 2 mins void time was enough to take off or not. But my student thought he had to depart in 2 mins and hung up the phone. And I was not on the phone nor on speaker, so we took off in 2 mins void time. Right after we took off, bridgeport called airport to see if we still were there and to confirm my student understood whole instructions, but we were not. So bridgeport called providence approach to protect airspace in taunton area for 2 mins. When we came back to tan, I talked to bridgeport clearance and apologized for miscom between my student and briefer.

Original NASA ASRS Text

Title: C172 DEP FROM TAN EXPERIENCED CONFUSION REGARDING IFR RELEASE TIME.

Narrative: ONE OF MY INTL STUDENTS MISUNDERSTOOD THE CLRNC FOR IFR FLT FROM TAN TO EWB. SINCE TAN WAS UNCTLED ARPT, MY STUDENT WAS TRYING TO RECEIVE CLRNC OVER THE PHONE FROM BRIDGEPORT CLRNC. AFTER MY STUDENT RECEIVED CLRNC, PERSON OVER BRIDGEPORT ASKED IF 2 MINS VOID TIME WAS ENOUGH TO TAKE OFF OR NOT. BUT MY STUDENT THOUGHT HE HAD TO DEPART IN 2 MINS AND HUNG UP THE PHONE. AND I WAS NOT ON THE PHONE NOR ON SPEAKER, SO WE TOOK OFF IN 2 MINS VOID TIME. RIGHT AFTER WE TOOK OFF, BRIDGEPORT CALLED ARPT TO SEE IF WE STILL WERE THERE AND TO CONFIRM MY STUDENT UNDERSTOOD WHOLE INSTRUCTIONS, BUT WE WERE NOT. SO BRIDGEPORT CALLED PROVIDENCE APCH TO PROTECT AIRSPACE IN TAUNTON AREA FOR 2 MINS. WHEN WE CAME BACK TO TAN, I TALKED TO BRIDGEPORT CLRNC AND APOLOGIZED FOR MISCOM BTWN MY STUDENT AND BRIEFER.

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.