B727 flight crew has problem with ATC when requesting WX deviation to the north. ATC interprets requ...

Attributes
ACN	340340
Time
Date	199607
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : mmid
State Reference	FO
Aircraft 1
Controlling Facilities	artcc : mmid tower : smx
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Hercules (C-130)
Operating Under FAR Part	other : other
Navigation In Use	Other
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	340340
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	inflight encounter : weather other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : unable other
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

ATC facility: merida center. Location: nukan intersection. Requested deviation to the north of track, proceeding direct nukan, due to WX. Request was approved. Just prior to nukan ATC advised conflict was a C130 aircraft and that our earlier request for south was approved, not north. All 3 crew members confirmed north of track was asked for and granted, south would have us in a thunderstorm. ATC assigned us a heading of 090 degrees to avoid traffic. Observed a TA on TCASII. Merida then handed off to havana advising us no separation lost conflict.

Original NASA ASRS Text

Title: B727 FLC HAS PROB WITH ATC WHEN REQUESTING WX DEV TO THE N. ATC INTERPRETS REQUEST TO S.

Narrative: ATC FACILITY: MERIDA CTR. LOCATION: NUKAN INTXN. REQUESTED DEV TO THE N OF TRACK, PROCEEDING DIRECT NUKAN, DUE TO WX. REQUEST WAS APPROVED. JUST PRIOR TO NUKAN ATC ADVISED CONFLICT WAS A C130 ACFT AND THAT OUR EARLIER REQUEST FOR S WAS APPROVED, NOT N. ALL 3 CREW MEMBERS CONFIRMED N OF TRACK WAS ASKED FOR AND GRANTED, S WOULD HAVE US IN A TSTM. ATC ASSIGNED US A HDG OF 090 DEGS TO AVOID TFC. OBSERVED A TA ON TCASII. MERIDA THEN HANDED OFF TO HAVANA ADVISING US NO SEPARATION LOST 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.

B727 flight crew has problem with ATC when requesting WX deviation to the north. ATC interprets request to south.