Instructor fails to comply with controller instructions in class B airspace.

Attributes
ACN	298186
Time
Date	199503
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : sea airport : rnt
State Reference	WA
Altitude	msl bound lower : 1500 msl bound upper : 1500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sea
Operator	general aviation : instructional
Make Model Name	PA-34-220T Turbo Seneca III
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Flight Plan	VFR
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : cfi pilot : instrument pilot : commercial
Experience	flight time last 90 days : 80 flight time total : 640 flight time type : 15
ASRS Report	298186
Person 2
Affiliation	Other
Function	instruction : trainee
Qualification	pilot : student
Events
Anomaly	non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance flight crew : returned to intended course or assigned course other
Consequence	faa : reviewed incident with flight crew Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

5 mi west of seatac, over mid vashon island, I called seattle tower and requested an eastbound transition through the class B airspace. Common procedure: the controller gives pilot a transponder code, idents him on radar, and clears him to cross the approach end at 1500 ft MSL. I was making the radio calls, while my student was flying. Together we have done this airport crossing about 50 times. He is a korean student working on his commercial multi engine rating. Once we were cleared to cross the airport, he neglected to turn towards the approach end. The tower queried us about our intentions, 'sir, are you going to cross sea-tac or boeing?' I told her that I was planning to cross sea-tac and that I realized that I was a little far north. I had been telling my student to turn back towards sea-tac. He did so, but very slowly, the tower asked us 'do you have sea-tac in sight?' I told her I did have it in sight. We turned back in time, but had we continued we would have been in conflict with arriving air traffic (airliners) into seatac. Student only made standard rate turn, where he could have steepened the bank to avoid any conflict.

Original NASA ASRS Text

Title: INSTRUCTOR FAILS TO COMPLY WITH CTLR INSTRUCTIONS IN CLASS B AIRSPACE.

Narrative: 5 MI W OF SEATAC, OVER MID VASHON ISLAND, I CALLED SEATTLE TWR AND REQUESTED AN EBOUND TRANSITION THROUGH THE CLASS B AIRSPACE. COMMON PROC: THE CTLR GIVES PLT A XPONDER CODE, IDENTS HIM ON RADAR, AND CLRS HIM TO CROSS THE APCH END AT 1500 FT MSL. I WAS MAKING THE RADIO CALLS, WHILE MY STUDENT WAS FLYING. TOGETHER WE HAVE DONE THIS ARPT XING ABOUT 50 TIMES. HE IS A KOREAN STUDENT WORKING ON HIS COMMERCIAL MULTI ENG RATING. ONCE WE WERE CLRED TO CROSS THE ARPT, HE NEGLECTED TO TURN TOWARDS THE APCH END. THE TWR QUERIED US ABOUT OUR INTENTIONS, 'SIR, ARE YOU GOING TO CROSS SEA-TAC OR BOEING?' I TOLD HER THAT I WAS PLANNING TO CROSS SEA-TAC AND THAT I REALIZED THAT I WAS A LITTLE FAR N. I HAD BEEN TELLING MY STUDENT TO TURN BACK TOWARDS SEA-TAC. HE DID SO, BUT VERY SLOWLY, THE TWR ASKED US 'DO YOU HAVE SEA-TAC IN SIGHT?' I TOLD HER I DID HAVE IT IN SIGHT. WE TURNED BACK IN TIME, BUT HAD WE CONTINUED WE WOULD HAVE BEEN IN CONFLICT WITH ARRIVING AIR TFC (AIRLINERS) INTO SEATAC. STUDENT ONLY MADE STANDARD RATE TURN, WHERE HE COULD HAVE STEEPENED THE BANK TO AVOID ANY CONFLICT.

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.