What was found
AIR TURN BACK UPON CLIMB OF 9000' WAS HIT BY LIGHTNING STRIKE. FOLLOWED QRH OUT OF 10000'. AT THAT TIME ALL INDICATIONS GOOD. ON GATEWAY CHECK FOUND 20-40 DEG DIFFERENCE ON BEARING BUT DISTANCE WAS GOOD. ON RETURNING , IN DESCENT ALERT ON HSI STARTED BLINKING TRUE - LOOKED AND NOTICED HEADING REF SWITCH IN TRUE NOT MAG. C/W LIGHTNING STRIKE INSP IAW TASK 05-51-19-212-001 AND RADIO OPEN CK IAW TASK 05-51-19-212-016- NO DAMAGE FOUND ALL RAD/NAV FUNCTIONS OPERATING NORMALLY. HDG TRUE/NORM SWITCH INDICATES NORMALLY. ACFT OK FOR SERVICE.