Narrative:

I was on an IFR flight plan from tri to roa. Approaching roa at 9000 ft; I was given dscnts and vectors for sequencing. I was turned back to the approach and given a late turn; overshot the lda course. I was still descending; using speed brakes and lowering gear at vlo but still too fast for the approach due to the descent. I reached decision ht at the runway threshold but was still high and fast and was not able to land. The visibility was good and asked the tower controller if I could circle and land on runway 33. He said it was not authority/authorized and I started the missed approach late in the sequence. There is mountainous terrain in the immediate area of the airport and I was dangerously close to it. I conducted a second uneventful approach and landed. My performance of the flight was substandard. I try to comply with ATC; but when it was impractical due to dscnts which are fast in a mooney and vectors that are late to intercept the final approach course were received; I should have asked to start over at that point. Another contributing factor is the new CNX80 on my panel. Although my second navigation was set to the lda; I did not switch the CNX80 to localizer from GPS. This had no effect as I broke out over the runway so lateral guidance was not a problem; but it could have been. The complicated new avionics added to the workload; but I believe the major problem was a late descent resulting in too high a speed and vectors that required extra maneuvering. My biggest mistake was a late and poorly executed missed approach; for which I was ill-prepared due in part to trying to rescue an ill-advised approach. In the future; I will not over-cooperate with ATC if things aren't right; and I will be ready (and willing) to perform the missed approach period; without trying to rescue a landing.

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Original NASA ASRS Text

Title: A MOONEY M20K PLT; VECTORED AND KEPT HIGH ON AN ROA LOC APCH; EXECUTES A LATE GAR NEAR TERRAIN AND DISCUSSES NAV SYS COMPLEXITY.

Narrative: I WAS ON AN IFR FLT PLAN FROM TRI TO ROA. APCHING ROA AT 9000 FT; I WAS GIVEN DSCNTS AND VECTORS FOR SEQUENCING. I WAS TURNED BACK TO THE APCH AND GIVEN A LATE TURN; OVERSHOT THE LDA COURSE. I WAS STILL DSNDING; USING SPD BRAKES AND LOWERING GEAR AT VLO BUT STILL TOO FAST FOR THE APCH DUE TO THE DSCNT. I REACHED DECISION HT AT THE RWY THRESHOLD BUT WAS STILL HIGH AND FAST AND WAS NOT ABLE TO LAND. THE VISIBILITY WAS GOOD AND ASKED THE TWR CTLR IF I COULD CIRCLE AND LAND ON RWY 33. HE SAID IT WAS NOT AUTH AND I STARTED THE MISSED APCH LATE IN THE SEQUENCE. THERE IS MOUNTAINOUS TERRAIN IN THE IMMEDIATE AREA OF THE ARPT AND I WAS DANGEROUSLY CLOSE TO IT. I CONDUCTED A SECOND UNEVENTFUL APCH AND LANDED. MY PERFORMANCE OF THE FLT WAS SUBSTANDARD. I TRY TO COMPLY WITH ATC; BUT WHEN IT WAS IMPRACTICAL DUE TO DSCNTS WHICH ARE FAST IN A MOONEY AND VECTORS THAT ARE LATE TO INTERCEPT THE FINAL APCH COURSE WERE RECEIVED; I SHOULD HAVE ASKED TO START OVER AT THAT POINT. ANOTHER CONTRIBUTING FACTOR IS THE NEW CNX80 ON MY PANEL. ALTHOUGH MY SECOND NAV WAS SET TO THE LDA; I DID NOT SWITCH THE CNX80 TO LOC FROM GPS. THIS HAD NO EFFECT AS I BROKE OUT OVER THE RWY SO LATERAL GUIDANCE WAS NOT A PROB; BUT IT COULD HAVE BEEN. THE COMPLICATED NEW AVIONICS ADDED TO THE WORKLOAD; BUT I BELIEVE THE MAJOR PROB WAS A LATE DSCNT RESULTING IN TOO HIGH A SPD AND VECTORS THAT REQUIRED EXTRA MANEUVERING. MY BIGGEST MISTAKE WAS A LATE AND POORLY EXECUTED MISSED APCH; FOR WHICH I WAS ILL-PREPARED DUE IN PART TO TRYING TO RESCUE AN ILL-ADVISED APCH. IN THE FUTURE; I WILL NOT OVER-COOPERATE WITH ATC IF THINGS AREN'T RIGHT; AND I WILL BE READY (AND WILLING) TO PERFORM THE MISSED APCH PERIOD; WITHOUT TRYING TO RESCUE A LNDG.

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.