Pilot of C172 misprograms center of tfr on his GPS. Pilot is met by an F-16 and diverted.

Attributes
ACN	694675
Time
Date	200604
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : apc.airport
State Reference	CA
Altitude	msl single value : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : yip.tower
Operator	general aviation : personal
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	None
Aircraft 2
Operator	other
Make Model Name	Fighting Falcon F16
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 30 flight time total : 4200 flight time type : 2235
ASRS Report	694675
Person 2
Affiliation	government : military
Function	flight crew : single pilot
Events
Anomaly	airspace violation : entry non adherence : far
Resolutory Action	flight crew : exited penetrated airspace other
Supplementary
Problem Areas	Flight Crew Human Performance Airspace Structure Aircraft
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

My student and I got the tfr prior to takeoff. Since we were flying cross country; we plotted it out on the chart. My mistake was that while we were flying; I kept the GPS to the sts VOR for distance to make sure we stayed at least 30 NM away; but I forgot that the 30 NM radius was from a radial and distance from the VOR and not the VOR itself. Our course would have taken us just outside the tfr; but we had drifted north due to lack of wind correction towards the south. Winds aloft were from the south at 8 KTS at the time. We discovered we were inside the tfr when an F-16 flew by us. We then diverted south then back east.

Original NASA ASRS Text

Title: PLT OF C172 MISPROGRAMS CENTER OF TFR ON HIS GPS. PLT IS MET BY AN F-16 AND DIVERTED.

Narrative: MY STUDENT AND I GOT THE TFR PRIOR TO TKOF. SINCE WE WERE FLYING XCOUNTRY; WE PLOTTED IT OUT ON THE CHART. MY MISTAKE WAS THAT WHILE WE WERE FLYING; I KEPT THE GPS TO THE STS VOR FOR DISTANCE TO MAKE SURE WE STAYED AT LEAST 30 NM AWAY; BUT I FORGOT THAT THE 30 NM RADIUS WAS FROM A RADIAL AND DISTANCE FROM THE VOR AND NOT THE VOR ITSELF. OUR COURSE WOULD HAVE TAKEN US JUST OUTSIDE THE TFR; BUT WE HAD DRIFTED N DUE TO LACK OF WIND CORRECTION TOWARDS THE S. WINDS ALOFT WERE FROM THE S AT 8 KTS AT THE TIME. WE DISCOVERED WE WERE INSIDE THE TFR WHEN AN F-16 FLEW BY US. WE THEN DIVERTED S THEN BACK E.

Data retrieved from NASA's ASRS site as of January 2009 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.