Narrative:

During a test flight of the aircraft after an annual inspection, I made a normal takeoff, pattern and landing at 36V. On the second pattern, I made a high speed pass down the runway to check control response/lack of flutter/engine response and other flight parameters. During the pass, however, I sensed abnormally high engine speed (above that expected at high speed) and held the aircraft down to investigate further. In the delayed climb, the 500' AGL ground clearance rule was accidentally broken for other than takeoff or landing operations. Later in the day I was giving some aircraft familiarization dual to a friend at 9k4. He has heard me talk of the agility of the aircraft and asked to do a pass down the runway. I said to go ahead, but to not 'do anything wild.' he proceeded, but delayed pulling up far too long, despite my asking him to climb. Finally I grabbed the controls from him, but we already were nearly over the end of the runway and again were below 500' AGL for a few seconds. He then attempted a landing, but was blown left by a crosswind. When the situation because suggestive of a go around, I had him initiate one--but he held the nose 'to get back on track.' I told him not to worry about that--just to climb. He did that, but again too late, and we were again below 500' AGL, though this time for a go around. We departed the pattern and the intercom began to break up, so I began trying to fix it. When I looked up next (my friend was still flying) we were on a right base let at about 400' AGL. When asked what he was doing, my friend said he was 'setting up for a short field approach.' I informed him that that wasn't the proper technique, climbed and proceeded with a correct pattern. Recommendations: test flts should be done at sufficient altitudes to permit high speed operations at safe altitudes after diving for speed. Also, 'friends' who also fly should be supervised very closely, as their actions may be very incompetent and unsafe. This person in particular will not fly with me again until an attitude change is effected. The events of that day will not ever be repeated, as I pledge to follow these recommendations in the future. No more fly-bys of any sort.

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Original NASA ASRS Text

Title: REPORTER AND HIS PASSENGER BUZZED RWYS AT 2 ARPTS. ALSO VERY LOW WHEN OFF ARPT PROPERTY.

Narrative: DURING A TEST FLT OF THE ACFT AFTER AN ANNUAL INSPECTION, I MADE A NORMAL TKOF, PATTERN AND LNDG AT 36V. ON THE SECOND PATTERN, I MADE A HIGH SPD PASS DOWN THE RWY TO CHK CTL RESPONSE/LACK OF FLUTTER/ENG RESPONSE AND OTHER FLT PARAMETERS. DURING THE PASS, HOWEVER, I SENSED ABNORMALLY HIGH ENG SPD (ABOVE THAT EXPECTED AT HIGH SPD) AND HELD THE ACFT DOWN TO INVESTIGATE FURTHER. IN THE DELAYED CLB, THE 500' AGL GND CLRNC RULE WAS ACCIDENTALLY BROKEN FOR OTHER THAN TKOF OR LNDG OPS. LATER IN THE DAY I WAS GIVING SOME ACFT FAMILIARIZATION DUAL TO A FRIEND AT 9K4. HE HAS HEARD ME TALK OF THE AGILITY OF THE ACFT AND ASKED TO DO A PASS DOWN THE RWY. I SAID TO GO AHEAD, BUT TO NOT 'DO ANYTHING WILD.' HE PROCEEDED, BUT DELAYED PULLING UP FAR TOO LONG, DESPITE MY ASKING HIM TO CLB. FINALLY I GRABBED THE CONTROLS FROM HIM, BUT WE ALREADY WERE NEARLY OVER THE END OF THE RWY AND AGAIN WERE BELOW 500' AGL FOR A FEW SECS. HE THEN ATTEMPTED A LNDG, BUT WAS BLOWN LEFT BY A XWIND. WHEN THE SITUATION BECAUSE SUGGESTIVE OF A GAR, I HAD HIM INITIATE ONE--BUT HE HELD THE NOSE 'TO GET BACK ON TRACK.' I TOLD HIM NOT TO WORRY ABOUT THAT--JUST TO CLB. HE DID THAT, BUT AGAIN TOO LATE, AND WE WERE AGAIN BELOW 500' AGL, THOUGH THIS TIME FOR A GAR. WE DEPARTED THE PATTERN AND THE INTERCOM BEGAN TO BREAK UP, SO I BEGAN TRYING TO FIX IT. WHEN I LOOKED UP NEXT (MY FRIEND WAS STILL FLYING) WE WERE ON A RIGHT BASE LET AT ABOUT 400' AGL. WHEN ASKED WHAT HE WAS DOING, MY FRIEND SAID HE WAS 'SETTING UP FOR A SHORT FIELD APCH.' I INFORMED HIM THAT THAT WASN'T THE PROPER TECHNIQUE, CLBED AND PROCEEDED WITH A CORRECT PATTERN. RECOMMENDATIONS: TEST FLTS SHOULD BE DONE AT SUFFICIENT ALTS TO PERMIT HIGH SPD OPS AT SAFE ALTS AFTER DIVING FOR SPD. ALSO, 'FRIENDS' WHO ALSO FLY SHOULD BE SUPERVISED VERY CLOSELY, AS THEIR ACTIONS MAY BE VERY INCOMPETENT AND UNSAFE. THIS PERSON IN PARTICULAR WILL NOT FLY WITH ME AGAIN UNTIL AN ATTITUDE CHANGE IS EFFECTED. THE EVENTS OF THAT DAY WILL NOT EVER BE REPEATED, AS I PLEDGE TO FOLLOW THESE RECOMMENDATIONS IN THE FUTURE. NO MORE FLY-BYS OF ANY SORT.

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.