Small aircraft overflies air carrier taxiing on ramp.

Attributes
ACN	326036
Time
Date	199601
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : sna
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sna
Operator	common carrier : air carrier
Make Model Name	B737-400
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	ground other : taxi
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	climbout : initial
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 230 flight time total : 10000
ASRS Report	326036
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	conflict : ground critical non adherence : far
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Miss Distance	vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

On taxi-in, light aircraft lifted off runway 19L and immediately turned left on an approximately 45 degree departure right over the run-up area (with at least 1 aircraft running-up in place) and just about right over our aircraft taxiing in. We asked ground about him and were told that the light aircraft is instructed to not conflict with departing B737 traffic from parallel runway (which involves a left turn-out over the taxiway). But after 18 months of operations at sna, I have never seen a turn-out so soon, so low. Usually they climb on centerline to 100-200 ft and then turn. This particular day the turn started at runway end and aircraft crossed taxiway at approximately 100 ft AGL (my tail is 36 ft 6 inches AGL). Early turns should be outlawed from runway 19L. Airliners are always on taxiway a trying to avoid low-flying departing aircraft. So let's get the word out to not turn before a minimum altitude and never fly over a taxiing airliner (or any aircraft). Most importantly, the controllers at sna are excellent -- very professional under very marginal conditions. They are the best team to consult to enact safety procedures to protect taxiing aircraft.

Original NASA ASRS Text

Title: SMA OVERFLIES ACR TAXIING ON RAMP.

Narrative: ON TAXI-IN, LIGHT ACFT LIFTED OFF RWY 19L AND IMMEDIATELY TURNED L ON AN APPROX 45 DEG DEP RIGHT OVER THE RUN-UP AREA (WITH AT LEAST 1 ACFT RUNNING-UP IN PLACE) AND JUST ABOUT RIGHT OVER OUR ACFT TAXIING IN. WE ASKED GND ABOUT HIM AND WERE TOLD THAT THE LIGHT ACFT IS INSTRUCTED TO NOT CONFLICT WITH DEPARTING B737 TFC FROM PARALLEL RWY (WHICH INVOLVES A L TURN-OUT OVER THE TXWY). BUT AFTER 18 MONTHS OF OPS AT SNA, I HAVE NEVER SEEN A TURN-OUT SO SOON, SO LOW. USUALLY THEY CLB ON CTRLINE TO 100-200 FT AND THEN TURN. THIS PARTICULAR DAY THE TURN STARTED AT RWY END AND ACFT CROSSED TXWY AT APPROX 100 FT AGL (MY TAIL IS 36 FT 6 INCHES AGL). EARLY TURNS SHOULD BE OUTLAWED FROM RWY 19L. AIRLINERS ARE ALWAYS ON TXWY A TRYING TO AVOID LOW-FLYING DEPARTING ACFT. SO LET'S GET THE WORD OUT TO NOT TURN BEFORE A MINIMUM ALT AND NEVER FLY OVER A TAXIING AIRLINER (OR ANY ACFT). MOST IMPORTANTLY, THE CTLRS AT SNA ARE EXCELLENT -- VERY PROFESSIONAL UNDER VERY MARGINAL CONDITIONS. THEY ARE THE BEST TEAM TO CONSULT TO ENACT SAFETY PROCS TO PROTECT TAXIING ACFT.

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.