A dash 8 flight crew understands FL220, but ATC said that they should have stopped at FL200.

Attributes
ACN	517450
Time
Date	200107
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : clt.airport
State Reference	NC
Altitude	msl bound lower : 20000 msl bound upper : 22000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tower : cyyz.tower
Operator	common carrier : air carrier
Make Model Name	Dash 8 Series Undifferentiated or Other Model
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 250 flight time total : 10000 flight time type : 4000
ASRS Report	517450
Events
Anomaly	altitude deviation : overshoot non adherence : clearance other anomaly other
Resolutory Action	controller : issued new clearance flight crew : returned to assigned altitude
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	ATC Human Performance

Narrative:

Flight planned for FL200. First officer and captain thought ZTL assigned FL220. Switched to jax and checked in climbing to FL220. Controller didn't catch mistake and made no comment. As separation decreased, we were told to descend to FL200. No comment was made that we had climbed through an assigned altitude. No TA or RA was received. We followed procedure that have both pilots point to any new altitude set and saying the new altitude. Both pilots pointed and said FL220. We both thought and read back to each other FL220. 2 notes: I found it strange that when the suspected mistake was discovered the controller never mentioned any altitude deviation. We both feel safety was never compromised as there was never a TA or RA.

Original NASA ASRS Text

Title: A DASH 8 FLT CREW UNDERSTANDS FL220, BUT ATC SAID THAT THEY SHOULD HAVE STOPPED AT FL200.

Narrative: FLT PLANNED FOR FL200. FO AND CAPT THOUGHT ZTL ASSIGNED FL220. SWITCHED TO JAX AND CHECKED IN CLBING TO FL220. CTLR DIDN'T CATCH MISTAKE AND MADE NO COMMENT. AS SEPARATION DECREASED, WE WERE TOLD TO DSND TO FL200. NO COMMENT WAS MADE THAT WE HAD CLBED THROUGH AN ASSIGNED ALT. NO TA OR RA WAS RECEIVED. WE FOLLOWED PROC THAT HAVE BOTH PLTS POINT TO ANY NEW ALT SET AND SAYING THE NEW ALT. BOTH PLTS POINTED AND SAID FL220. WE BOTH THOUGHT AND READ BACK TO EACH OTHER FL220. 2 NOTES: I FOUND IT STRANGE THAT WHEN THE SUSPECTED MISTAKE WAS DISCOVERED THE CTLR NEVER MENTIONED ANY ALTDEV. WE BOTH FEEL SAFETY WAS NEVER COMPROMISED AS THERE WAS NEVER A TA OR RA.

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.