Entered restricted airspace.

Attributes
ACN	92846
Time
Date	198808
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : yrk
State Reference	KY
Altitude	msl bound lower : 9500 msl bound upper : 9500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid tower : sjc
Operator	other
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	cruise other
Flight Plan	VFR
Aircraft 2
Operator	other
Make Model Name	Fighter
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : flight engineer pilot : atp pilot : cfi
Experience	flight time last 90 days : 30 flight time total : 2900 flight time type : 300
ASRS Report	92846
Person 2
Affiliation	government : military
Function	flight crew : single pilot
Qualification	pilot : military
Events
Anomaly	aircraft equipment problem : less severe non adherence : far other anomaly other
Independent Detector	other other : unspecified
Resolutory Action	flight crew : became reoriented
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

While on a routine VFR flight from the cincinnati blue ash airport to reading, PA, I passed through a part of R5503A due to the fact that the RNAV radio I was navigating by experienced a malfunction of several degree. I had been receiving advisories from indy center after my departure from blue ash but was terminated by the center due to traffic saturation in his sector. I continued flying eastbound navigating to a point (RNAV) slightly northwest of the york (yrk) VOR on a radial which would keep me just south of the restr area. After flying for several minutes, an fgt joined my left wing. At this time, I checked my cincinnati sectional chart to confirm my RNAV waypoint and inbound course to the point. I found no error. However, when I cross-checked my position with my #2 radio, I found my position well north into the restr area. I turned south immediately and proceeded directly to the york VOR in order to vacate the area. The next center controller confirmed the area was active when I contacted him for further advisories. I continued to reading west/O further incident where I had the VOR-RNAV unit inspected. The radio was found in substantial error both in the aircraft and when later tested by an avionics repair station and subsequently repaired.

Original NASA ASRS Text

Title: ENTERED RESTRICTED AIRSPACE.

Narrative: WHILE ON A ROUTINE VFR FLT FROM THE CINCINNATI BLUE ASH ARPT TO READING, PA, I PASSED THROUGH A PART OF R5503A DUE TO THE FACT THAT THE RNAV RADIO I WAS NAVIGATING BY EXPERIENCED A MALFUNCTION OF SEVERAL DEG. I HAD BEEN RECEIVING ADVISORIES FROM INDY CENTER AFTER MY DEP FROM BLUE ASH BUT WAS TERMINATED BY THE CENTER DUE TO TFC SATURATION IN HIS SECTOR. I CONTINUED FLYING EBND NAVIGATING TO A POINT (RNAV) SLIGHTLY NW OF THE YORK (YRK) VOR ON A RADIAL WHICH WOULD KEEP ME JUST S OF THE RESTR AREA. AFTER FLYING FOR SEVERAL MINUTES, AN FGT JOINED MY LEFT WING. AT THIS TIME, I CHKED MY CINCINNATI SECTIONAL CHART TO CONFIRM MY RNAV WAYPOINT AND INBND COURSE TO THE POINT. I FOUND NO ERROR. HOWEVER, WHEN I CROSS-CHKED MY POS WITH MY #2 RADIO, I FOUND MY POS WELL N INTO THE RESTR AREA. I TURNED S IMMEDIATELY AND PROCEEDED DIRECTLY TO THE YORK VOR IN ORDER TO VACATE THE AREA. THE NEXT CENTER CTLR CONFIRMED THE AREA WAS ACTIVE WHEN I CONTACTED HIM FOR FURTHER ADVISORIES. I CONTINUED TO READING W/O FURTHER INCIDENT WHERE I HAD THE VOR-RNAV UNIT INSPECTED. THE RADIO WAS FOUND IN SUBSTANTIAL ERROR BOTH IN THE ACFT AND WHEN LATER TESTED BY AN AVIONICS REPAIR STATION AND SUBSEQUENTLY REPAIRED.

Data retrieved from NASA's ASRS site as of August 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.