<< >> NASA ASRS Report 494662, December 2000

B757-200 flight crew takes evasive action around conflicting same altitude traffic when transitioning from ZMA to muha in the vicinity of tadpo intersection.

Attributes
ACN	494662
Time
Date	200012
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : mth.ndb
State Reference	FL
Altitude	msl bound lower : 30000 msl bound upper : 30300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zma.artcc
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : enroute altitude change
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise : enroute altitude change
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : multi engine pilot : instrument
Experience	flight time last 90 days : 120 flight time total : 6000 flight time type : 320
ASRS Report	494662
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : nmac non adherence : published procedure non adherence : required legal separation
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued new clearance flight crew : returned to assigned altitude flight crew : took evasive action
Miss Distance	horizontal : 200 vertical : 400
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error Inter Facility Coordination Failure

Narrative:

Climbing to FL370 with ZMA, vector toward tadpo fix, passing FL300. Prior to tadpo with havana center, traffic passed left, 100-200 ft and vertical less than 400 ft above, no prior advisement from ZMA or havana. Havana called us, passing FL300, that traffic was descending inbound from tadpo and told us to level off at FL300. We saw the aircraft (too late) as we were attempting to descend to FL300. After confirming that it was the traffic at havana, continued our climb (with clearance from havana to FL370). ZMA never advised us of the inbound, descending traffic. Havana advised us, although it was too late. No TCASII installed.

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Original NASA ASRS Text

Title: B757-200 FLC TAKES EVASIVE ACTION AROUND CONFLICTING SAME ALT TFC WHEN TRANSITIONING FROM ZMA TO MUHA IN THE VICINITY OF TADPO INTXN.

Narrative: CLBING TO FL370 WITH ZMA, VECTOR TOWARD TADPO FIX, PASSING FL300. PRIOR TO TADPO WITH HAVANA CTR, TFC PASSED L, 100-200 FT AND VERT LESS THAN 400 FT ABOVE, NO PRIOR ADVISEMENT FROM ZMA OR HAVANA. HAVANA CALLED US, PASSING FL300, THAT TFC WAS DSNDING INBOUND FROM TADPO AND TOLD US TO LEVEL OFF AT FL300. WE SAW THE ACFT (TOO LATE) AS WE WERE ATTEMPTING TO DSND TO FL300. AFTER CONFIRMING THAT IT WAS THE TFC AT HAVANA, CONTINUED OUR CLB (WITH CLRNC FROM HAVANA TO FL370). ZMA NEVER ADVISED US OF THE INBOUND, DSNDING TFC. HAVANA ADVISED US, ALTHOUGH IT WAS TOO LATE. NO TCASII INSTALLED.

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.