An aircraft receiving VFR advisory service from TRACON climbed above his stated altitude without inf...

Attributes
ACN	149177
Time
Date	199006
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : 5a9
State Reference	GA
Altitude	msl bound lower : 11000 msl bound upper : 12000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : ztl tracon : csg
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other cruise other
Flight Plan	VFR
Person 1
Affiliation	government : faa
Function	controller : handoff position
Qualification	controller : radar
Experience	controller radar : 2
ASRS Report	149177
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	altitude deviation : excursion from assigned altitude other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was working as the radar associate for the radar controller at csg approach. All 3 sectors were combined. When I took position, a jump aircraft was in the air over warm springs. The aircraft did have a transponder but no mode C altitude encoder. He had advised he would be climbing to 11000'. Since our airspace extends only to 10000', this had been coordinated with ZTL. After I was on position, ZTL called to determine if the aircraft was still at an altitude in their airspace. The radar controller asked the aircraft's altitude, to which the pilot replied 12000'. This is 1000' higher than he had indicated he would be climbing to. This jump area is right in the midst of a departure gate from atl and thus is frequently occupied by climbing jet aircraft. I firmly believe that all aircraft required to have ATC service (including VFR jump aircraft) should be required to have mode C encoders.

Original NASA ASRS Text

Title: AN ACFT RECEIVING VFR ADVISORY SERVICE FROM TRACON CLIMBED ABOVE HIS STATED ALT WITHOUT INFORMING ATC.

Narrative: I WAS WORKING AS THE RADAR ASSOCIATE FOR THE RADAR CTLR AT CSG APCH. ALL 3 SECTORS WERE COMBINED. WHEN I TOOK POS, A JUMP ACFT WAS IN THE AIR OVER WARM SPRINGS. THE ACFT DID HAVE A XPONDER BUT NO MODE C ALT ENCODER. HE HAD ADVISED HE WOULD BE CLBING TO 11000'. SINCE OUR AIRSPACE EXTENDS ONLY TO 10000', THIS HAD BEEN COORDINATED WITH ZTL. AFTER I WAS ON POS, ZTL CALLED TO DETERMINE IF THE ACFT WAS STILL AT AN ALT IN THEIR AIRSPACE. THE RADAR CTLR ASKED THE ACFT'S ALT, TO WHICH THE PLT REPLIED 12000'. THIS IS 1000' HIGHER THAN HE HAD INDICATED HE WOULD BE CLBING TO. THIS JUMP AREA IS RIGHT IN THE MIDST OF A DEP GATE FROM ATL AND THUS IS FREQUENTLY OCCUPIED BY CLBING JET ACFT. I FIRMLY BELIEVE THAT ALL ACFT REQUIRED TO HAVE ATC SVC (INCLUDING VFR JUMP ACFT) SHOULD BE REQUIRED TO HAVE MODE C ENCODERS.

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.

An aircraft receiving VFR advisory service from TRACON climbed above his stated altitude without informing ATC.