Small aircraft accused of flying in the dfw TCA.

Attributes
ACN	144559
Time
Date	199005
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : afw
State Reference	TX
Altitude	msl bound lower : 2800 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : afw
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	descent : approach
Flight Plan	VFR
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : cfi pilot : commercial pilot : instrument
ASRS Report	144559
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	non adherence : far other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

I was conducting an instrument training flight, altitude 2800' MSL. Radio contact was established with alliance tower, preceeded by contact with regional approach. The approach was being conducted in VFR conditions under VFR flight rules. No radar service was provided, nor IFR-VFR sep. While transitioning to intercept the localizer for an ILS approach, I was informed by alliance tower controller that regional approach had called and said my aircraft had entered the dfw TCA. The floor was at 3000' MSL. The altimeter read 2800' MSL, local altimeter setting was 3000'. I do not believe I was legally in the TCA (dfw). I believe the altimeter was functioning properly and indicating 2800' MSL. I believe my transponder was inaccurately indicating 3000' MSL. Thus indicating to dfw regional approach that I was in violation of their airspace. I believe this so called 'incident' could have been avoided by permitting the approach to be conducted under the direction of regional approach. Instead of alliance tower. Also, by requesting verification of altitude reporting equipment from ATC, on my part. The transponder and altitude each had checked and were within legal limits for IFR use according to far part 91.

Original NASA ASRS Text

Title: SMA ACCUSED OF FLYING IN THE DFW TCA.

Narrative: I WAS CONDUCTING AN INSTRUMENT TRNING FLT, ALT 2800' MSL. RADIO CONTACT WAS ESTABLISHED WITH ALLIANCE TWR, PRECEEDED BY CONTACT WITH REGIONAL APCH. THE APCH WAS BEING CONDUCTED IN VFR CONDITIONS UNDER VFR FLT RULES. NO RADAR SVC WAS PROVIDED, NOR IFR-VFR SEP. WHILE TRANSITIONING TO INTERCEPT THE LOC FOR AN ILS APCH, I WAS INFORMED BY ALLIANCE TWR CTLR THAT REGIONAL APCH HAD CALLED AND SAID MY ACFT HAD ENTERED THE DFW TCA. THE FLOOR WAS AT 3000' MSL. THE ALTIMETER READ 2800' MSL, LCL ALTIMETER SETTING WAS 3000'. I DO NOT BELIEVE I WAS LEGALLY IN THE TCA (DFW). I BELIEVE THE ALTIMETER WAS FUNCTIONING PROPERLY AND INDICATING 2800' MSL. I BELIEVE MY TRANSPONDER WAS INACCURATELY INDICATING 3000' MSL. THUS INDICATING TO DFW REGIONAL APCH THAT I WAS IN VIOLATION OF THEIR AIRSPACE. I BELIEVE THIS SO CALLED 'INCIDENT' COULD HAVE BEEN AVOIDED BY PERMITTING THE APCH TO BE CONDUCTED UNDER THE DIRECTION OF REGIONAL APCH. INSTEAD OF ALLIANCE TWR. ALSO, BY REQUESTING VERIFICATION OF ALT RPTING EQUIP FROM ATC, ON MY PART. THE TRANSPONDER AND ALT EACH HAD CHKED AND WERE WITHIN LEGAL LIMITS FOR IFR USE ACCORDING TO FAR PART 91.

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.