Cpr small transport altitude deviation overshot during climb.

Attributes
ACN	106787
Time
Date	198903
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : bos
State Reference	MA
Altitude	msl bound lower : 20000 msl bound upper : 22000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zbw
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp pilot : commercial
Experience	flight time last 90 days : 100 flight time total : 8800 flight time type : 900
ASRS Report	106787
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : overshoot non adherence : clearance
Independent Detector	other controllera
Resolutory Action	flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Ambiguous
Air Traffic Incident	Pilot Deviation Operational Deviation other

Narrative:

After departure we were turned over to ZBW with an expected climb clearance to an altitude of FL240. During the climb we had several intermediate level-off's. The PNF received and read back a climb clearance to what he thought was FL220. As normal, he set the altitude selected to FL220. As the aircraft climbed through FL210 ZBW called and asked what our altitude was. He responded, '21000, 200.' the controller advised us that we were only cleared to FL200 and to stop the climb to FL220. He restated that we were only cleared to FL200. There were no more comments to or from this controller concerning the altitude. I asked the copilot what he felt had happened. He stated that he was sure that he had rogered FL220. I believe in, and try to operate our aircraft as a 2 pilot crew. You should be able to look at the altitude selector and if it is set to an altitude that you know is safe, the copilot says he accepted that altitude, and you have no reason to question him, then I think you should do it. I do accept full responsibility for this incident. If I had thought there was a question on the altitude I would have had him confirm the clearance with the controller.

Original NASA ASRS Text

Title: CPR SMT ALT DEVIATION OVERSHOT DURING CLIMB.

Narrative: AFTER DEP WE WERE TURNED OVER TO ZBW WITH AN EXPECTED CLB CLRNC TO AN ALT OF FL240. DURING THE CLB WE HAD SEVERAL INTERMEDIATE LEVEL-OFF'S. THE PNF RECEIVED AND READ BACK A CLB CLRNC TO WHAT HE THOUGHT WAS FL220. AS NORMAL, HE SET THE ALT SELECTED TO FL220. AS THE ACFT CLBED THROUGH FL210 ZBW CALLED AND ASKED WHAT OUR ALT WAS. HE RESPONDED, '21000, 200.' THE CTLR ADVISED US THAT WE WERE ONLY CLRED TO FL200 AND TO STOP THE CLB TO FL220. HE RESTATED THAT WE WERE ONLY CLRED TO FL200. THERE WERE NO MORE COMMENTS TO OR FROM THIS CTLR CONCERNING THE ALT. I ASKED THE COPLT WHAT HE FELT HAD HAPPENED. HE STATED THAT HE WAS SURE THAT HE HAD ROGERED FL220. I BELIEVE IN, AND TRY TO OPERATE OUR ACFT AS A 2 PLT CREW. YOU SHOULD BE ABLE TO LOOK AT THE ALT SELECTOR AND IF IT IS SET TO AN ALT THAT YOU KNOW IS SAFE, THE COPLT SAYS HE ACCEPTED THAT ALT, AND YOU HAVE NO REASON TO QUESTION HIM, THEN I THINK YOU SHOULD DO IT. I DO ACCEPT FULL RESPONSIBILITY FOR THIS INCIDENT. IF I HAD THOUGHT THERE WAS A QUESTION ON THE ALT I WOULD HAVE HAD HIM CONFIRM THE CLRNC WITH THE CTLR.

Data retrieved from NASA's ASRS site as of August 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.