<< >> NASA ASRS Report 376367, August 1997

EMS helicopter pilot complaint on the scale used to define class C airspaces. Pilot had flown in the magenta line without clearance and was not certain that he had stayed outside of that class C airspace as defined by the broad line. Says that the line is, in reality, 500 yards wide.

Attributes
ACN	376367
Time
Date	199708
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : zzz
State Reference	US
Altitude	msl bound lower : 1500 msl bound upper : 1500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : zzz
Operator	other
Make Model Name	SA 360 Dauphin
Operating Under FAR Part	Part 135
Flight Phase	cruise other
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 35 flight time total : 5500 flight time type : 1000
ASRS Report	376367
Events
Anomaly	non adherence : published procedure non adherence : far other anomaly other other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Chart Or Publication
Air Traffic Incident	Pilot Deviation

Narrative:

On the way to a motor vehicle accident on route aa in XXX county, us, I did not contact xyz approach control on the way out. I was about 100 yards south of route aa. According to the sectional (ZZZ) the class C airspace extends to but does not include route aa. The magenta lines that constitute the class C airspace are about 500 yards wide. I do not believe I was in the class C airspace, but with a 1:500000 map, it is hard to be super accurate. I have stated before that I believe all class C airspaces should have a separate map as class B airspace does.

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Original NASA ASRS Text

Title: EMS HELI PLT COMPLAINT ON THE SCALE USED TO DEFINE CLASS C AIRSPACES. PLT HAD FLOWN IN THE MAGENTA LINE WITHOUT CLRNC AND WAS NOT CERTAIN THAT HE HAD STAYED OUTSIDE OF THAT CLASS C AIRSPACE AS DEFINED BY THE BROAD LINE. SAYS THAT THE LINE IS, IN REALITY, 500 YARDS WIDE.

Narrative: ON THE WAY TO A MOTOR VEHICLE ACCIDENT ON RTE AA IN XXX COUNTY, US, I DID NOT CONTACT XYZ APCH CTL ON THE WAY OUT. I WAS ABOUT 100 YARDS S OF RTE AA. ACCORDING TO THE SECTIONAL (ZZZ) THE CLASS C AIRSPACE EXTENDS TO BUT DOES NOT INCLUDE RTE AA. THE MAGENTA LINES THAT CONSTITUTE THE CLASS C AIRSPACE ARE ABOUT 500 YARDS WIDE. I DO NOT BELIEVE I WAS IN THE CLASS C AIRSPACE, BUT WITH A 1:500000 MAP, IT IS HARD TO BE SUPER ACCURATE. I HAVE STATED BEFORE THAT I BELIEVE ALL CLASS C AIRSPACES SHOULD HAVE A SEPARATE MAP AS CLASS B AIRSPACE DOES.

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.