General aviation pilot reports problems with his GPS which is not immediately recognized; resulting ...

Attributes
ACN	1083104
Time
Date	201304
Place
Locale Reference	CHD.Airport
State Reference	AZ
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Flight Plan	None
Person 1
Function	Single Pilot
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Airspace Violation All Types Deviation - Procedural FAR Deviation - Track / Heading All Types

Narrative:

GPS provided faulty direction to an entered waypoint which I did not immediately recognize. While manipulating the controls of the unit to attempt to get the appropriate result to the desired waypoint I continued to travel on an inappropriate course for my destination. When I switched back to the map page I was very close to the class D airspace of chd and iwa and may have breached the border of the D airspace(s) while I was reversing course. It could have been eliminated if I had reversed course immediately when I became aware of the problem with the GPS and returned to my departure airport and attempted to solve the problem on the ground.

Original NASA ASRS Text

Title: General aviation pilot reports problems with his GPS which is not immediately recognized; resulting in possible Class D airspace entry without a clearance.

Narrative: GPS provided faulty direction to an entered waypoint which I did not immediately recognize. While manipulating the controls of the unit to attempt to get the appropriate result to the desired waypoint I continued to travel on an inappropriate course for my destination. When I switched back to the map page I was very close to the Class D airspace of CHD and IWA and may have breached the border of the D airspace(s) while I was reversing course. It could have been eliminated if I had reversed course immediately when I became aware of the problem with the GPS and returned to my departure airport and attempted to solve the problem on the ground.

Data retrieved from NASA's ASRS site as of July 2013 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.

General aviation pilot reports problems with his GPS which is not immediately recognized; resulting in possible class D airspace entry without a clearance.