<< >> NASA ASRS Report 436123, May 1999

A united states air carrier dodges a foreign B727 which had climbed above its assigned altitude southeast of tij, first officer.

Attributes
ACN	436123
Time
Date	199905
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : mmtj.airport
State Reference	FO
Altitude	msl bound lower : 13000 msl bound upper : 14000
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : mmtj.tracon
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	descent : intermediate altitude descent : approach
Route In Use	arrival other enroute airway : j1.airway
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : mmtj.tracon
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude climbout : vacating altitude
Route In Use	enroute airway : j1.airway
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 270 flight time total : 17000 flight time type : 3000
ASRS Report	436123
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : overshoot non adherence : clearance non adherence : required legal separation
Independent Detector	aircraft equipment : tcas other controllera
Resolutory Action	flight crew : took precautionary avoidance action
Miss Distance	horizontal : 3000 vertical : 300
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On descent to san, level at 14000 ft, traffic was called at 10 O'clock, leveling at 13000 ft. We got visual on the B727. I watched the TCASII for the leveloff at 13000 ft. He kept climbing. I turned left to go behind him. After this, we got an RA to climb. We climbed per the TCASII. The B727 passed to the right side and went off the TCASII, showing 300 ft and about 1/2 mi. ATC was told about the RA and the B727 not leveling. There was a lot of radio conversation in spanish. The controller said there was a misunderstanding with the pilot. It was good we were VFR otherwise the TCASII would have given us even less time to react.

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Original NASA ASRS Text

Title: A UNITED STATES ACR DODGES A FOREIGN B727 WHICH HAD CLBED ABOVE ITS ASSIGNED ALT SE OF TIJ, FO.

Narrative: ON DSCNT TO SAN, LEVEL AT 14000 FT, TFC WAS CALLED AT 10 O'CLOCK, LEVELING AT 13000 FT. WE GOT VISUAL ON THE B727. I WATCHED THE TCASII FOR THE LEVELOFF AT 13000 FT. HE KEPT CLBING. I TURNED L TO GO BEHIND HIM. AFTER THIS, WE GOT AN RA TO CLB. WE CLBED PER THE TCASII. THE B727 PASSED TO THE R SIDE AND WENT OFF THE TCASII, SHOWING 300 FT AND ABOUT 1/2 MI. ATC WAS TOLD ABOUT THE RA AND THE B727 NOT LEVELING. THERE WAS A LOT OF RADIO CONVERSATION IN SPANISH. THE CTLR SAID THERE WAS A MISUNDERSTANDING WITH THE PLT. IT WAS GOOD WE WERE VFR OTHERWISE THE TCASII WOULD HAVE GIVEN US EVEN LESS TIME TO REACT.

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.