When captain overshot his assigned altitude he turned off transponder until back to proper altitude.

Attributes
ACN	182619
Time
Date	199107
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : elp
State Reference	TX
Altitude	msl bound lower : 20000 msl bound upper : 21000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zab
Operator	common carrier : air taxi
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : intermediate altitude cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : atp pilot : commercial pilot : instrument
Experience	flight time last 90 days : 235 flight time total : 8000 flight time type : 760
ASRS Report	182619
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : atp pilot : commercial
Events
Anomaly	altitude deviation : undershoot altitude deviation : excursion from assigned altitude non adherence : clearance non adherence : far
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While en route from elp to cie on J2, our assigned altitude was FL200. It was the captain's leg to fly and I was working the radios. Center assigned us a different frequency and I reported in at FL200, then center asked me to verify my altitude. I then looked at the altimeter and saw we were actually at FL207. At this time the captain disengaged the autoplt and pulled up and leveled off at FL210, and turned off the altitude reporting on the transponder. I reminded him we were assigned FL200. Then he started descending while I cycled the transponder off and on. When we got back to FL200, I turned on altitude reporting and center verified FL200. The problem was initially caused by one person trying to do everything, lack of cockpit management, disruption of crew member duties and relaxed attention on my part, as well as other crew members.

Original NASA ASRS Text

Title: WHEN CAPT OVERSHOT HIS ASSIGNED ALT HE TURNED OFF TRANSPONDER UNTIL BACK TO PROPER ALT.

Narrative: WHILE ENRTE FROM ELP TO CIE ON J2, OUR ASSIGNED ALT WAS FL200. IT WAS THE CAPT'S LEG TO FLY AND I WAS WORKING THE RADIOS. CENTER ASSIGNED US A DIFFERENT FREQ AND I RPTED IN AT FL200, THEN CENTER ASKED ME TO VERIFY MY ALT. I THEN LOOKED AT THE ALTIMETER AND SAW WE WERE ACTUALLY AT FL207. AT THIS TIME THE CAPT DISENGAGED THE AUTOPLT AND PULLED UP AND LEVELED OFF AT FL210, AND TURNED OFF THE ALT RPTING ON THE XPONDER. I REMINDED HIM WE WERE ASSIGNED FL200. THEN HE STARTED DSNDING WHILE I CYCLED THE XPONDER OFF AND ON. WHEN WE GOT BACK TO FL200, I TURNED ON ALT RPTING AND CENTER VERIFIED FL200. THE PROB WAS INITIALLY CAUSED BY ONE PERSON TRYING TO DO EVERYTHING, LACK OF COCKPIT MGMNT, DISRUPTION OF CREW MEMBER DUTIES AND RELAXED ATTN ON MY PART, AS WELL AS OTHER CREW MEMBERS.

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.