Pilot of 2 engine turbo propeller aircraft in climb overshot assigned altitude.

Attributes
ACN	168273
Time
Date	199101
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : elp
State Reference	TX
Altitude	msl bound lower : 12000 msl bound upper : 13000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zab artcc : zny
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : intermediate altitude cruise other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : cfi pilot : instrument pilot : atp
Experience	flight time last 90 days : 56 flight time total : 14500 flight time type : 1200
ASRS Report	168273
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	altitude deviation : overshoot conflict : airborne less severe non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Miss Distance	vertical : 1000
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I departed 5t6 VFR and while airborne asked for an IFR clearance which I had filed. I thought I was cleared to my requested cruising altitude of FL210. As I passed 13000' the controller told me that I was cleared to 12000' and that another aircraft was descending to 14000'. I made a very rapid descent to 12000'.

Original NASA ASRS Text

Title: PLT OF 2 ENGINE TURBO PROPELLER ACFT IN CLIMB OVERSHOT ASSIGNED ALT.

Narrative: I DEPARTED 5T6 VFR AND WHILE AIRBORNE ASKED FOR AN IFR CLRNC WHICH I HAD FILED. I THOUGHT I WAS CLRED TO MY REQUESTED CRUISING ALT OF FL210. AS I PASSED 13000' THE CTLR TOLD ME THAT I WAS CLRED TO 12000' AND THAT ANOTHER ACFT WAS DSNDING TO 14000'. I MADE A VERY RAPID DSNT TO 12000'.

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.