Pilot flies less than 2000 ft over nature conservation area.

Attributes
ACN	250171
Time
Date	199308
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ona
State Reference	MN
Altitude	msl bound lower : 2100 msl bound upper : 2100
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Small Aircraft
Flight Phase	cruise other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 80 flight time total : 4500 flight time type : 20
ASRS Report	250171
Person 2
Affiliation	Other
Function	observation : passenger
Qualification	pilot : private
Events
Anomaly	other anomaly other other anomaly other
Independent Detector	other other : unspecified
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

There is considerable ambiguity among many pilots with a variety of experience regarding overflts of nature conservatories. Our maps/charts/sectionals need to be more clear as to the meaning of these areas (at present no depiction exists) on the legend. I was flying over an area near winona airport, mn, which I did not know was a conservatory area because I didn't notice the depictive blue lines and dots. WX was marginal with improvement eastbound. A fellow pilot pointed out the dots at the conclusion of my flight. I do not knowingly violate FARS. I did not see these lines and dots. 2000 ft was not VFR possible with the cloud base this day. Let's explain the meaning of the blue lines and dots on all navigation charts!

Original NASA ASRS Text

Title: PLT FLIES LESS THAN 2000 FT OVER NATURE CONSERVATION AREA.

Narrative: THERE IS CONSIDERABLE AMBIGUITY AMONG MANY PLTS WITH A VARIETY OF EXPERIENCE REGARDING OVERFLTS OF NATURE CONSERVATORIES. OUR MAPS/CHARTS/SECTIONALS NEED TO BE MORE CLR AS TO THE MEANING OF THESE AREAS (AT PRESENT NO DEPICTION EXISTS) ON THE LEGEND. I WAS FLYING OVER AN AREA NEAR WINONA ARPT, MN, WHICH I DID NOT KNOW WAS A CONSERVATORY AREA BECAUSE I DIDN'T NOTICE THE DEPICTIVE BLUE LINES AND DOTS. WX WAS MARGINAL WITH IMPROVEMENT EBOUND. A FELLOW PLT POINTED OUT THE DOTS AT THE CONCLUSION OF MY FLT. I DO NOT KNOWINGLY VIOLATE FARS. I DID NOT SEE THESE LINES AND DOTS. 2000 FT WAS NOT VFR POSSIBLE WITH THE CLOUD BASE THIS DAY. LET'S EXPLAIN THE MEANING OF THE BLUE LINES AND DOTS ON ALL NAV CHARTS!

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.