Altitude crossing restriction not met. Altitude deviation altitude undershot in descent.

Attributes
ACN	215872
Time
Date	199207
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : bna
State Reference	TN
Altitude	msl bound lower : 7000 msl bound upper : 10000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	arrival other arrival star : star enroute airway : bna
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 3300 flight time type : 250
ASRS Report	215872
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : undershoot altitude deviation : crossing restriction not met inflight encounter : weather non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While trying to circumnav thunderstorms on the arrival into bna we (crew) realized that we were at 10000 instead of the assigned 7000 ft 40 southeast of bna at the volls intersection. We elected to delay the descent because of concern for the severity of the storms. We also became so involved that we failed to advise ATC of our plan. Better coordination between our flight and ATC could have averted this situation. TCASII showed no traffic within 40 NM either below us or above.

Original NASA ASRS Text

Title: ALT XING RESTRICTION NOT MET. ALTDEV ALT UNDERSHOT IN DSCNT.

Narrative: WHILE TRYING TO CIRCUMNAV TSTMS ON THE ARR INTO BNA WE (CREW) REALIZED THAT WE WERE AT 10000 INSTEAD OF THE ASSIGNED 7000 FT 40 SE OF BNA AT THE VOLLS INTXN. WE ELECTED TO DELAY THE DSCNT BECAUSE OF CONCERN FOR THE SEVERITY OF THE STORMS. WE ALSO BECAME SO INVOLVED THAT WE FAILED TO ADVISE ATC OF OUR PLAN. BETTER COORD BTWN OUR FLT AND ATC COULD HAVE AVERTED THIS SITUATION. TCASII SHOWED NO TFC WITHIN 40 NM EITHER BELOW US OR ABOVE.

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.