C182 pilot experiences loss of GPS navigation capability while flying south bound beneath the sea class B airspace and believes he may have entered a MOA while attempting to navigate using paper charts.

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Attributes
ACN	1263549
Time
Date	201505
Local Time Of Day	1201-1800
Place
Locale Reference	S46.TRACON
State Reference	WA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Skylane 182/RG Turbo Skylane/RG
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Flight Plan	VFR
Component
Aircraft Component	GPS & Other Satellite Navigation
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Engineer Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 15 Flight Crew Total 26000 Flight Crew Type 1000
Events
Anomaly	Aircraft Equipment Problem Less Severe Airspace Violation All Types

Narrative:

I was going to olm VFR when my GPS froze and I had to grab my paper charts. I was under the class B airspace south east of sea-tac (sea) and east of mcchord (tcm) and decided to go south and skirt around the moas where I may have inadvertently entered one. Not sure.

Original NASA ASRS Text

Title: C182 pilot experiences loss of GPS NAV capability while flying south bound beneath the SEA Class B airspace and believes he may have entered a MOA while attempting to navigate using paper charts.

Narrative: I was going to OLM VFR when my GPS froze and I had to grab my paper charts. I was under the Class B airspace south east of SEA-TAC (SEA) and east of McChord (TCM) and decided to go south and skirt around the MOAs where I may have inadvertently entered one. Not sure.

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.