Narrative:

Had taken my aztec out for pleasure flight (PA23-250F) with intention to fly 1/2 hour and return to northeast phila airport. Contacted phila approach, got squawk, asked for practice ILS runway 24 to full stop at pne. (I liked to do this sometimes not only for practice in instrument procedures but also to be sure all my ILS equipment functions properly.) phila approach cleared me 3 mi outside the marker for the approach. I was on GS and did not receive OM signal (no NOTAM had been issued). I checked approach plate and saw I had passed marker. I then called phila approach and asked if I should call tower. They said yes. I called tower and they asked if I was on 3 mi final. I said yes. (That's when I realized I might have inadvertently done something wrong.) there was landing traffic ahead of me and I ended up doing a go around, at tower's request. Tower was not upset and did not ask me to call. This is a nebulous area for me. Phila approach cleared me for ILS runway 24, said maintain VFR, and did not tell me to contact tower. Aim 4-71h says ATC will usually ask pilot to report to tower prior to, or over, FAF inbound. Safety was not compromised and I'm not sure who's responsibility is called into play here, but I know I was well into class D before talking to tower. I know I'll try to be more careful about that in the future.

Google
 

Original NASA ASRS Text

Title: PLT OF AN SMT TWIN QUESTIONED WHETHER HE HAD DONE SOMETHING WRONG DURING A PRACTICE ILS APCH IN VFR CONDITIONS AFTER PASSING THE OM INBOUND BEFORE CONTACTING THE TWR FOR LNDG CLRNC.

Narrative: HAD TAKEN MY AZTEC OUT FOR PLEASURE FLT (PA23-250F) WITH INTENTION TO FLY 1/2 HR AND RETURN TO NE PHILA ARPT. CONTACTED PHILA APCH, GOT SQUAWK, ASKED FOR PRACTICE ILS RWY 24 TO FULL STOP AT PNE. (I LIKED TO DO THIS SOMETIMES NOT ONLY FOR PRACTICE IN INST PROCS BUT ALSO TO BE SURE ALL MY ILS EQUIP FUNCTIONS PROPERLY.) PHILA APCH CLRED ME 3 MI OUTSIDE THE MARKER FOR THE APCH. I WAS ON GS AND DID NOT RECEIVE OM SIGNAL (NO NOTAM HAD BEEN ISSUED). I CHKED APCH PLATE AND SAW I HAD PASSED MARKER. I THEN CALLED PHILA APCH AND ASKED IF I SHOULD CALL TWR. THEY SAID YES. I CALLED TWR AND THEY ASKED IF I WAS ON 3 MI FINAL. I SAID YES. (THAT'S WHEN I REALIZED I MIGHT HAVE INADVERTENTLY DONE SOMETHING WRONG.) THERE WAS LNDG TFC AHEAD OF ME AND I ENDED UP DOING A GAR, AT TWR'S REQUEST. TWR WAS NOT UPSET AND DID NOT ASK ME TO CALL. THIS IS A NEBULOUS AREA FOR ME. PHILA APCH CLRED ME FOR ILS RWY 24, SAID MAINTAIN VFR, AND DID NOT TELL ME TO CONTACT TWR. AIM 4-71H SAYS ATC WILL USUALLY ASK PLT TO RPT TO TWR PRIOR TO, OR OVER, FAF INBOUND. SAFETY WAS NOT COMPROMISED AND I'M NOT SURE WHO'S RESPONSIBILITY IS CALLED INTO PLAY HERE, BUT I KNOW I WAS WELL INTO CLASS D BEFORE TALKING TO TWR. I KNOW I'LL TRY TO BE MORE CAREFUL ABOUT THAT IN THE FUTURE.

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