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PA28 pilot has possible transponder failure and transitions under class B airspace in non compliance with far, transponder requirement.
| Attributes | |
| ACN | 398030 |
| Time | |
| Date | 199803 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : iad |
| State Reference | DC |
| Altitude | msl bound lower : 2500 msl bound upper : 2500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dca |
| Operator | general aviation : personal |
| Make Model Name | PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : private |
| Experience | flight time last 90 days : 22 flight time total : 280 flight time type : 22 |
| ASRS Report | 398030 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : far other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Piper cherokee transitioned dca VFR corridor from south to north at or below 2500 ft MSL, avoiding all restr airspace and flying below applicable floors of all class B airspace. 3 days prior to this trip a new transponder and encoder was installed and tested for correct frequency and correlation by an avionics company. On mar/xx/98 no ATC facility transitioned on a flight to north carolina indicated any problem receiving signals from this transponder. Then on mar/yy/98, while transitioning wilkes-barre airspace, ATC was unable to make radar contact with me. And later in the trip, btv could only make radar contact briefly. I suspect that I may have transitioned washington, dc, class B airspace without a functioning transponder.
Original NASA ASRS Text
Title: PA28 PLT HAS POSSIBLE XPONDER FAILURE AND TRANSITIONS UNDER CLASS B AIRSPACE IN NON COMPLIANCE WITH FAR, XPONDER REQUIREMENT.
Narrative: PIPER CHEROKEE TRANSITIONED DCA VFR CORRIDOR FROM S TO N AT OR BELOW 2500 FT MSL, AVOIDING ALL RESTR AIRSPACE AND FLYING BELOW APPLICABLE FLOORS OF ALL CLASS B AIRSPACE. 3 DAYS PRIOR TO THIS TRIP A NEW XPONDER AND ENCODER WAS INSTALLED AND TESTED FOR CORRECT FREQ AND CORRELATION BY AN AVIONICS COMPANY. ON MAR/XX/98 NO ATC FACILITY TRANSITIONED ON A FLT TO NORTH CAROLINA INDICATED ANY PROB RECEIVING SIGNALS FROM THIS XPONDER. THEN ON MAR/YY/98, WHILE TRANSITIONING WILKES-BARRE AIRSPACE, ATC WAS UNABLE TO MAKE RADAR CONTACT WITH ME. AND LATER IN THE TRIP, BTV COULD ONLY MAKE RADAR CONTACT BRIEFLY. I SUSPECT THAT I MAY HAVE TRANSITIONED WASHINGTON, DC, CLASS B AIRSPACE WITHOUT A FUNCTIONING XPONDER.
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.