Air carrier large transport altitude overshoots in climb.

Attributes
ACN	145953
Time
Date	199005
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : lga
State Reference	NY
Altitude	msl bound lower : 20000 msl bound upper : 22000
Environment
Flight Conditions	IMC
Light	Dusk
Aircraft 1
Controlling Facilities	artcc : zny
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 180 flight time total : 6000 flight time type : 450
ASRS Report	145953
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : overshoot other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Deviation

Narrative:

While climbing out after takeoff from lga, the captain was talking on the radio and I was flying. I was turning to a heading and climbing IFR, and was involved with flying the plane. I was aware of a clearance to a higher altitude, but I did not have the altitude. I heard the captain repeat that our flight was cleared to FL220 and he set 22000 in the altitude window of the altitude alert system. I continued the climb, and as we passed 21500' the controller said that we had overshot our altitude. He then cleared us to FL220. The captain either heard the clearance wrong or the center controller gave us the wrong altitude. Center thought we were cleared to 20000'. We thought we were cleared to 22000'. This phase of flight was demanding because of the WX. I think that would be the main reason for the problem. The controller was also very busy.

Original NASA ASRS Text

Title: ACR LGT ALT OVERSHOOTS IN CLIMB.

Narrative: WHILE CLBING OUT AFTER TKOF FROM LGA, THE CAPT WAS TALKING ON THE RADIO AND I WAS FLYING. I WAS TURNING TO A HDG AND CLBING IFR, AND WAS INVOLVED WITH FLYING THE PLANE. I WAS AWARE OF A CLRNC TO A HIGHER ALT, BUT I DID NOT HAVE THE ALT. I HEARD THE CAPT REPEAT THAT OUR FLT WAS CLRED TO FL220 AND HE SET 22000 IN THE ALT WINDOW OF THE ALT ALERT SYS. I CONTINUED THE CLB, AND AS WE PASSED 21500' THE CTLR SAID THAT WE HAD OVERSHOT OUR ALT. HE THEN CLRED US TO FL220. THE CAPT EITHER HEARD THE CLRNC WRONG OR THE CENTER CTLR GAVE US THE WRONG ALT. CENTER THOUGHT WE WERE CLRED TO 20000'. WE THOUGHT WE WERE CLRED TO 22000'. THIS PHASE OF FLT WAS DEMANDING BECAUSE OF THE WX. I THINK THAT WOULD BE THE MAIN REASON FOR THE PROB. THE CTLR WAS ALSO VERY BUSY.

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.