<< >> NASA ASRS Report 312870, August 1995

Operation deviation occurs as approach controller technique ATC communication fails to issue approach clearance.

Attributes
ACN	312870
Time
Date	199508
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dtw
State Reference	MI
Altitude	msl bound lower : 3500 msl bound upper : 3500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dtw
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other descent : approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : cfi pilot : commercial pilot : atp
Experience	flight time last 90 days : 125 flight time total : 11700 flight time type : 1840
ASRS Report	312870
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	non adherence : published procedure other anomaly other
Independent Detector	other controllera other flight crewa other other : unspecified
Resolutory Action	controller : issued new clearance
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Deviation

Narrative:

We were cleared to 3000 ft and a 180 degree heading with no clearance to join. As we approached the course we were not able to contact approach because of frequency congestions. After passing the course we were able to contact approach and they gave us a left turn and told us to maintain altitude. We leveled at 3500 ft and followed instructions for a left downwind approach to runway 21L. During a phone conversation with the radar room the supervisor agreed that the controller had not given us clearance to join. He also stated that the aircraft originally following us had us visually at all times.

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Original NASA ASRS Text

Title: OP DEV OCCURS AS APCH CTLR TECHNIQUE ATC COM FAILS TO ISSUE APCH CLRNC.

Narrative: WE WERE CLRED TO 3000 FT AND A 180 DEG HDG WITH NO CLRNC TO JOIN. AS WE APCHED THE COURSE WE WERE NOT ABLE TO CONTACT APCH BECAUSE OF FREQ CONGESTIONS. AFTER PASSING THE COURSE WE WERE ABLE TO CONTACT APCH AND THEY GAVE US A L TURN AND TOLD US TO MAINTAIN ALT. WE LEVELED AT 3500 FT AND FOLLOWED INSTRUCTIONS FOR A L DOWNWIND APCH TO RWY 21L. DURING A PHONE CONVERSATION WITH THE RADAR ROOM THE SUPVR AGREED THAT THE CTLR HAD NOT GIVEN US CLRNC TO JOIN. HE ALSO STATED THAT THE ACFT ORIGINALLY FOLLOWING US HAD US VISUALLY AT ALL TIMES.

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.