<< >> NASA ASRS Report 145977, May 1990

While being vectored for an ILS to mdw, a corp turboprop small transport encounters VMC and ad libs a visual to cgx without clearance.

Attributes
ACN	145977
Time
Date	199005
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : mdw airport : cgx
State Reference	IL
Altitude	msl bound lower : 2500 msl bound upper : 2500
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ord
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	descent : approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 100 flight time total : 6500 flight time type : 900
ASRS Report	145977
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Landing at cgx (meigs) cleared for 31 ILS at midway until VFR conditions reached, then to meigs. At 2500' broke out and turned toward meigs. Controller said, 'what are your intentions?' pilot: 'proceeding to meigs.' controller' 'you do not have that option--proceed on ILS to mdw or cancel.' pilot: 'ok, I cancel, squawking 1200.' controller: 'received, cleared to meigs tower.' problem: I assumed I would get/or was getting a visibility approach to meigs with en route squawk (code) since I was 8-9 mi from meigs. I thought approach would want to continue my code and flight follow for traffic until I was close to meigs. No other aircraft involved, no conflict, no problem, just a communication misunderstanding.

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Original NASA ASRS Text

Title: WHILE BEING VECTORED FOR AN ILS TO MDW, A CORP TURBOPROP SMT ENCOUNTERS VMC AND AD LIBS A VISUAL TO CGX WITHOUT CLRNC.

Narrative: LNDG AT CGX (MEIGS) CLRED FOR 31 ILS AT MIDWAY UNTIL VFR CONDITIONS REACHED, THEN TO MEIGS. AT 2500' BROKE OUT AND TURNED TOWARD MEIGS. CTLR SAID, 'WHAT ARE YOUR INTENTIONS?' PLT: 'PROCEEDING TO MEIGS.' CTLR' 'YOU DO NOT HAVE THAT OPTION--PROCEED ON ILS TO MDW OR CANCEL.' PLT: 'OK, I CANCEL, SQUAWKING 1200.' CTLR: 'RECEIVED, CLRED TO MEIGS TWR.' PROB: I ASSUMED I WOULD GET/OR WAS GETTING A VIS APCH TO MEIGS WITH ENRTE SQUAWK (CODE) SINCE I WAS 8-9 MI FROM MEIGS. I THOUGHT APCH WOULD WANT TO CONTINUE MY CODE AND FLT FOLLOW FOR TFC UNTIL I WAS CLOSE TO MEIGS. NO OTHER ACFT INVOLVED, NO CONFLICT, NO PROB, JUST A COM MISUNDERSTANDING.

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.