Instructor and IFR student pilot depart uncontrolled airport without a release from TRACON controlle...

Narrative:

Instrument training flight departing from a non-towered airport. While in the run-up area at W29; bay bridge airport; I directed my student to contact potomac approach and obtain an IFR clearance. He connected with potomac via cell phone and obtained the clearance. I verified the clearance he copied then asked if we were provided a 'not off by time' or 'void time' and my student said; 'no.' I therefore assumed we were cleared us for IFR release. We departed W29 in VMC conditions and complied with the clearance. During initial contact with potomac once airborne; the controller seemed surprised we were checking on with IFR procedures because she asked if we were given a release or void time; my student replied with 'no.' she asked if we were VMC and we confirmed we were in VMC conditions. The controller then provided us an IFR clearance direct to sby at 5;000. She told us next time on initial call-up when trying to obtain an IFR clearance to state we are VMC and requesting the clearance. Looking back; I should have more aggressively reviewed the clearance my student copied. Since he spoke with potomac via cell phone; I could not monitor the call. I should have ensured that potomac provided the 'cleared for release' statement. In this case; I don't think potomac provided either a cleared for release or void time.

Original NASA ASRS Text

Title: Instructor and IFR Student pilot depart uncontrolled airport without a release from TRACON controllers working the airport.

Narrative: Instrument training flight departing from a non-towered airport. While in the run-up area at W29; Bay Bridge Airport; I directed my student to contact Potomac Approach and obtain an IFR clearance. He connected with Potomac via cell phone and obtained the clearance. I verified the clearance he copied then asked if we were provided a 'Not off by time' or 'Void time' and my student said; 'No.' I therefore assumed we were cleared us for IFR release. We departed W29 in VMC conditions and complied with the clearance. During initial contact with Potomac once airborne; the controller seemed surprised we were checking on with IFR procedures because she asked if we were given a release or void time; my student replied with 'No.' She asked if we were VMC and we confirmed we were in VMC conditions. The controller then provided us an IFR clearance direct to SBY at 5;000. She told us next time on initial call-up when trying to obtain an IFR clearance to state we are VMC and requesting the clearance. Looking back; I should have more aggressively reviewed the clearance my student copied. Since he spoke with Potomac via cell phone; I could not monitor the call. I should have ensured that Potomac provided the 'Cleared for release' statement. In this case; I don't think Potomac provided either a cleared for release or void time.

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.

Attributes
ACN	1223678
Time
Date	201412
Local Time Of Day	1201-1800
Place
Locale Reference	W29.Airport
State Reference	MD
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Small Aircraft Low Wing 1 Eng Retractable Gear
Operating Under FAR Part	Part 91
Flight Phase	Takeoff
Route In Use	Vectors
Flight Plan	IFR
Person 1
Function	Pilot Not Flying Instructor
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Flight Instructor Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 30 Flight Crew Total 5580 Flight Crew Type 25
Events
Anomaly	Airspace Violation All Types Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy

Instructor and IFR student pilot depart uncontrolled airport without a release from TRACON controllers working the airport.