<< >> NASA ASRS Report 384150, October 1997

Flight crew of cpr LR31A questions possible altitude deviation when descending and avoiding WX going into tpa. Approach controller assures there was no problem.

Attributes
ACN	384150
Time
Date	199710
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : tpa
State Reference	FL
Altitude	msl bound lower : 27000 msl bound upper : 27000
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Controlling Facilities	artcc : zjx
Operator	general aviation : corporate
Make Model Name	Learjet 31
Operating Under FAR Part	Part 91
Navigation In Use	Other Other
Flight Phase	descent other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi pilot : commercial pilot : instrument
Experience	flight time last 90 days : 100 flight time total : 4200
ASRS Report	384150
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	faa : reviewed incident with flight crew
Supplementary
Air Traffic Incident	other

Narrative:

We were descending, as well as diverting around WX going into tpa at night. We encountered what we thought was an altitude deviation from what we thought our clearance was from ZJX, while descending for the ILS approach to runway 18L at tampa international. When we arrived on the ground at tampa, without being prompted I decided to call ZJX for a clarification of what they were wanting us to do. They assured us that no violation had taken place, but that when in doubt to make sure what our clearance was. They also said that when not sure to always 'verify your clearance.' the lesson learned is to be cautious next time as well as alert when given altitude changes while descending.

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Original NASA ASRS Text

Title: FLC OF CPR LR31A QUESTIONS POSSIBLE ALTDEV WHEN DSNDING AND AVOIDING WX GOING INTO TPA. APCH CTLR ASSURES THERE WAS NO PROB.

Narrative: WE WERE DSNDING, AS WELL AS DIVERTING AROUND WX GOING INTO TPA AT NIGHT. WE ENCOUNTERED WHAT WE THOUGHT WAS AN ALTDEV FROM WHAT WE THOUGHT OUR CLRNC WAS FROM ZJX, WHILE DSNDING FOR THE ILS APCH TO RWY 18L AT TAMPA INTL. WHEN WE ARRIVED ON THE GND AT TAMPA, WITHOUT BEING PROMPTED I DECIDED TO CALL ZJX FOR A CLARIFICATION OF WHAT THEY WERE WANTING US TO DO. THEY ASSURED US THAT NO VIOLATION HAD TAKEN PLACE, BUT THAT WHEN IN DOUBT TO MAKE SURE WHAT OUR CLRNC WAS. THEY ALSO SAID THAT WHEN NOT SURE TO ALWAYS 'VERIFY YOUR CLRNC.' THE LESSON LEARNED IS TO BE CAUTIOUS NEXT TIME AS WELL AS ALERT WHEN GIVEN ALT CHANGES WHILE DSNDING.

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.