Alledged penetration of the TCA.

Attributes
ACN	87055
Time
Date	198805
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : ord airport : nbu
State Reference	IL
Altitude	msl bound lower : 1700 msl bound upper : 2900
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : pwk tower : nbu
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Retractable Gear
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial
Experience	flight time last 90 days : 10 flight time total : 1652 flight time type : 69
ASRS Report	87055
Person 2
Affiliation	Other
Function	observation : observer
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 15 flight time total : 10000 flight time type : 100
ASRS Report	87152
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

Approximately xa:30 am, may, 1988, we departed seneca, illinois, prairie view airport, for glenview naval air station (north.B.U). This was a return flight to glenview from which we had departed earlier the same morning. Our flight plan took us north over plano, illinois and then northeast toward elgin, staying west of du page airport and the fox river. South of elgin we headed directly for the northbound VOR (nbu) and then southeast to glenview naval air station. On contacting palwanhee tower, for permission to pass through their area and glenview tower for landing, we were told that they had been notified by O'hare that we had entered the northwest corner of the T.C.a. We do not think that we did. The pilots in our aircraft are experienced, familiar with the area and keenly aware of the T.C.a. We constantly monitored the progress of this 36 minute flight to make sure we stayed clear of the T.C.a. Supplemental information from acn #87152: since I was handling the communications, I reported 2900'. That statement is not exactly true depending on which point in our route is in question. Even though most of the time it was 2900' to remain under the TCA floor, he did descend to 1700' approaching northbrook.

Original NASA ASRS Text

Title: ALLEDGED PENETRATION OF THE TCA.

Narrative: APPROX XA:30 AM, MAY, 1988, WE DEPARTED SENECA, ILLINOIS, PRAIRIE VIEW ARPT, FOR GLENVIEW NAVAL AIR STATION (N.B.U). THIS WAS A RETURN FLT TO GLENVIEW FROM WHICH WE HAD DEPARTED EARLIER THE SAME MORNING. OUR FLT PLAN TOOK US NORTH OVER PLANO, ILLINOIS AND THEN NE TOWARD ELGIN, STAYING WEST OF DU PAGE ARPT AND THE FOX RIVER. SOUTH OF ELGIN WE HEADED DIRECTLY FOR THE NBOUND VOR (NBU) AND THEN SE TO GLENVIEW NAVAL AIR STATION. ON CONTACTING PALWANHEE TWR, FOR PERMISSION TO PASS THROUGH THEIR AREA AND GLENVIEW TWR FOR LNDG, WE WERE TOLD THAT THEY HAD BEEN NOTIFIED BY O'HARE THAT WE HAD ENTERED THE NORTHWEST CORNER OF THE T.C.A. WE DO NOT THINK THAT WE DID. THE PLTS IN OUR ACFT ARE EXPERIENCED, FAMILIAR WITH THE AREA AND KEENLY AWARE OF THE T.C.A. WE CONSTANTLY MONITORED THE PROGRESS OF THIS 36 MINUTE FLT TO MAKE SURE WE STAYED CLEAR OF THE T.C.A. SUPPLEMENTAL INFORMATION FROM ACN #87152: SINCE I WAS HANDLING THE COMMUNICATIONS, I REPORTED 2900'. THAT STATEMENT IS NOT EXACTLY TRUE DEPENDING ON WHICH POINT IN OUR ROUTE IS IN QUESTION. EVEN THOUGH MOST OF THE TIME IT WAS 2900' TO REMAIN UNDER THE TCA FLOOR, HE DID DESCEND TO 1700' APCHING NORTHBROOK.

Data retrieved from NASA's ASRS site as of August 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.