A COMMERCIAL INST RATED PLT FLYING A MAULE 7 NEAR ANC FAILED TO COMPLY WITH PUBLISHED PROCS RESULTING IN AN NMAC.

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I HAD BEEN IN CONTACT WITH ANC APCH; ENRTE TO LAKE HOOD STRIP. I ASKED FOR A DEV FROM FAR PART 93; THE SPECIAL AIR REG FOR THE ANCHORAGE; AL; AREA. APCH TOLD ME THAT I HAD SEVERAL ACFT IN THE AREA TO LOOK FOR; ONE L AND 2 TO THE R. THE CTLR GAVE DIRECTIONS AND DISTANCES; BUT AFTER HEARING THE FIRST 2 RAPID RPTS; I ONLY CAUGHT THE DIRECTION OF THE THIRD ACFT. I MISSED THE DISTANCE. I DID NOT ASK FOR CLARIFICATION; AS BOTH THE CTLR AND I WERE BUSY. I KNOW I WAS. ONE OF THE ACFT TO MY R; A CESSNA ON APCH TO ELMENDORF AFB; NEEDED TO BE IN SIGHT IN ORDER FOR ME TO RECEIVE THE REQUESTED DEV. I ONLY HAD THE ACFT TO MY L IN SIGHT; COULD NOT LOCATE EITHER ACFT TO THE R. I DSNDED ABOUT 300 FT TO COMPLY WITH PART 93. I RPTED THAT I ONLY HAD THE ONE TO THE L IN SIGHT AND WAS LOOKING FOR THE 2 ACFT TO THE R. I DID NOT RPT THAT I WAS DSNDING; OR THAT I INTENDED TO COMPLY WITH PART 93. JUST AS I TURNED FURTHER TO THE R; AND DSNDED; I SAW AN ACFT OUT THE R SIDE DOOR'S LOWER WINDOW. THIS ACFT (A PIPER CUB SERIES; OR PERHAPS A HUSKY) WAS 30-40 FT LOWER; AND 20-30 FT BEHIND AND TO MY R. I PASSED IN FRONT OF THE AIRPLANE AS I MADE THE TURN; FLYING DIAGONALLY ACROSS ITS FLT PATH. BEFORE I TURNED; I THINK THIS ACFT WOULD HAVE BEEN SLIGHTLY R; BEHIND AND BELOW ME; VISIBLE TO ME OUT THE R SIDE ONLY BY DIPPING THE WING. WE DID NOT COLLIDE; AND I KEPT THE 2 ACFT INSIGHT; RPTING MY POS AND INTENTIONS TO TWR. THE CTLR TOLD ME ABOUT THE PIPER TFC; AND I REPLIED THAT I HAD IT IN SIGHT; AND THAT I HAD COME PRETTY CLOSE TO THAT ACFT. I DID NOT SEE THAT ACFT TAKE ANY EVASIVE ACTION AT ANY TIME; SO I DO NOT KNOW IF THAT PLT SAW ME. I TOOK NO EVASIVE ACTION; AS THE NMAC WAS OVER; JUST AS I REALIZED WHAT HAD HAPPENED. THERE WAS NO NEED FOR FURTHER EVASIVE ACTION. LAKE HOOD TWR WAS UNABLE TO ESTABLISH RADIO COMS WITH THIS ACFT. IT WAS CLRED TO LAND; IN THE BLIND; AFTER I WAS CLRED TO LAND. I WATCHED THE PIPER CLR THE AIRSTRIP AS I TAXIED TO PARKING. AS I WAS STOPPED TO MAKE SURE A TRUCK YIELDED TO ME AT A STOP SIGN; I HEARD A VERY WEAK SCRATCHY XMISSION; POSSIBLY SAYING 'DOWN AND CLR;' AS THE PIPER CLRED THE RWY. MY ENG WAS AT IDLE; WHICH HELPED ME HEAR MUCH MORE; AND I WAS WEARING A BOSE HEADSET. THE PRIMARY PROB WAS THE PLT'S FAILURE TO SEE AND AVOID -- BOTH PLTS. A CONTRIBUTING FACTOR IS THE FUNNELING OF ACFT TO ONE AREA FOR THE APCH TO LAKE HOOD. THIS IS DANGEROUS; AND I AM AWARE OF THE PROB; BUT I OBVIOUSLY WAS NOT LOOKING ENOUGH. ALSO; THROUGH PART 93; ARRIVING AND DEPARTING ACFT OVER KNIK ARM MUST ALL FLY BTWN 600-1200 FT; OR ABOVE 2000 FT. THIS FURTHER SERVES AS A FUNNEL. IF THE DEPARTING CESSNA ACFT AT MY ALT HAD BEEN LOWER; I WOULD NOT HAVE DECIDED TO DEVIATE OR DSND. STILL; I DID NOT SEE THE PIPER. PERHAPS IT DID NOT SEE ME. IT REMAINS A SEE AND AVOID PROB. MY HEAD WAS SWIVELING THE WHOLE TIME I WAS INBOUND; AND I WAS LOOKING FOR TFC. IF THE PIPER HAD BEEN IN RADIO CONTACT; PERHAPS THE PROB COULD HAVE BEEN MORE EASILY AVOIDED. FACTORS: THE AIRSPACE WAS CROWDED AND THE CTLR WAS BUSY. I CHOSE NOT TO TALK ON THE RADIO WHEN I SHOULD HAVE ASKED FOR MORE INFO ABOUT THE UNSEEN ACFT. I COULD ALSO HAVE ASKED AGAIN FOR THE DEV TO PART 93; OR ASKED FOR CLARIFICATION THAT I COULD DEVIATE ONCE I FOUND IT; WITHOUT ASKING AGAIN FOR CLRNC. I PREFER TO FLY HIGHER; USUALLY ASKING FOR A DEV. I COULD HAVE ALSO CLBED TO ABOVE 2000 FT; WHICH WOULD NOT HAVE REQUIRED A DEV. I TOOK ACTION TO AVOID A POTENTIAL COLLISION WITH THE KNOWN ACFT (THE ONCOMING CESSNA) WITHOUT FINDING THE UNKNOWN ACFT I HAD BEEN TOLD ABOUT. BUT; I HAD TO MOVE SOMEWHERE. I LOOKED; BUT DID NOT SEE THE TFC. IN MY MIND; I DID NOT LOOK HARD ENOUGH; AS THE ACFT WAS THERE AND I DID NOT SEE IT. I AM HAPPY TO BE HERE TO RPT THIS.