Flight in class a and B airspace without mode C of the transponder.

Attributes
ACN	300125
Time
Date	199503
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : yyz
State Reference	ON
Altitude	msl bound lower : 570 msl bound upper : 18000
Environment
Flight Conditions	IMC
Light	Dusk
Aircraft 1
Controlling Facilities	artcc : zny artcc : yyz
Operator	general aviation : corporate
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude cruise other descent other
Route In Use	enroute airway : yyz
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 4100 flight time type : 50
ASRS Report	300125
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	aircraft equipment problem : less severe non adherence : far
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During an IFR flight on mar/xx/95 from dxr to cyyz (toronto) then to hpn to dxr our mode C became inoperative. We flew on into toronto (class B), departed, flew above 18000 ft to hpn (into class B) out of hpn and into dxr -- at no time did controllers advise us that we could not enter any of the airspace. (Toronto class B, new york class B or above 18000 ft MSL). We were only asked to advise of vacating altitudes, level at altitudes and any changes in altitudes.

Original NASA ASRS Text

Title: FLT IN CLASS A AND B AIRSPACE WITHOUT MODE C OF THE XPONDER.

Narrative: DURING AN IFR FLT ON MAR/XX/95 FROM DXR TO CYYZ (TORONTO) THEN TO HPN TO DXR OUR MODE C BECAME INOP. WE FLEW ON INTO TORONTO (CLASS B), DEPARTED, FLEW ABOVE 18000 FT TO HPN (INTO CLASS B) OUT OF HPN AND INTO DXR -- AT NO TIME DID CTLRS ADVISE US THAT WE COULD NOT ENTER ANY OF THE AIRSPACE. (TORONTO CLASS B, NEW YORK CLASS B OR ABOVE 18000 FT MSL). WE WERE ONLY ASKED TO ADVISE OF VACATING ALTS, LEVEL AT ALTS AND ANY CHANGES IN ALTS.

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.