Small aircraft X flight within 30 mi of class B airspace without transponder mode C. Violation of 30...

Attributes
ACN	293792
Time
Date	199501
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : bjc
State Reference	CO
Altitude	msl bound lower : 6500 msl bound upper : 10000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : bjc
Operator	general aviation : personal
Make Model Name	Christen (& Pitts) Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff climbout : intermediate altitude
Flight Plan	None
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
ASRS Report	293792
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	non adherence : far
Independent Detector	other controllera
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

There are several high performance/aerobatic type aircraft -- pitts, skybolts, that routinely depart jeffco without their xponders on. They routinely climb above our class D airspace and into the denver TCA. They fly at 5 mi wnw to a place just outside the class D airspace, and then practice aerobatics at altitudes ranging from 6500 ft to 1000 ft MSL. The place they routinely go (marshall lake) is in the vicinity of a 5 mi, straight-in final to runway 11L at jeffco. This happens every wkend (WX permitting) and involves several aircraft. It's a dangerous violation of airspace in both when they depart the air traffic area (class D) and when they practice aerobatics on a 5 mi final to jeffco's runway 11L. Callback conversation with reporter revealed the following information: reporter informed that flight within 30 mi of the primary airport of class B airspace requires a transponder with mode C and that it has to be turned on. Far 30 mi veil of a TCA covers this. Aerobatic flight outside class D and B airspace comes under the see and avoid concept.

Original NASA ASRS Text

Title: SMA X FLT WITHIN 30 MI OF CLASS B AIRSPACE WITHOUT XPONDER MODE C. VIOLATION OF 30 MI VEIL RULE OF FARS.

Narrative: THERE ARE SEVERAL HIGH PERFORMANCE/AEROBATIC TYPE ACFT -- PITTS, SKYBOLTS, THAT ROUTINELY DEPART JEFFCO WITHOUT THEIR XPONDERS ON. THEY ROUTINELY CLB ABOVE OUR CLASS D AIRSPACE AND INTO THE DENVER TCA. THEY FLY AT 5 MI WNW TO A PLACE JUST OUTSIDE THE CLASS D AIRSPACE, AND THEN PRACTICE AEROBATICS AT ALTS RANGING FROM 6500 FT TO 1000 FT MSL. THE PLACE THEY ROUTINELY GO (MARSHALL LAKE) IS IN THE VICINITY OF A 5 MI, STRAIGHT-IN FINAL TO RWY 11L AT JEFFCO. THIS HAPPENS EVERY WKEND (WX PERMITTING) AND INVOLVES SEVERAL ACFT. IT'S A DANGEROUS VIOLATION OF AIRSPACE IN BOTH WHEN THEY DEPART THE ATA (CLASS D) AND WHEN THEY PRACTICE AEROBATICS ON A 5 MI FINAL TO JEFFCO'S RWY 11L. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR INFORMED THAT FLT WITHIN 30 MI OF THE PRIMARY ARPT OF CLASS B AIRSPACE REQUIRES A XPONDER WITH MODE C AND THAT IT HAS TO BE TURNED ON. FAR 30 MI VEIL OF A TCA COVERS THIS. AEROBATIC FLT OUTSIDE CLASS D AND B AIRSPACE COMES UNDER THE SEE AND AVOID CONCEPT.

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.

Small aircraft X flight within 30 mi of class B airspace without transponder mode C. Violation of 30 mi veil rule of FARS.