<< >> NASA ASRS Report 346470, August 1996

Mdt aircraft. Altitude deviation on climb. Autoplt had kicked off and aircraft climbed 400 ft above assigned. PF returned aircraft to assigned.

Attributes
ACN	346470
Time
Date	199608
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : vcn
State Reference	NJ
Altitude	msl bound lower : 10000 msl bound upper : 10400
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : n90 tower : pns
Operator	general aviation : corporate
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude cruise other
Route In Use	enroute airway : n90
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 35 flight time total : 9300 flight time type : 40
ASRS Report	346470
Person 2
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : overshoot non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was assigned as captain for this flight by my company, but on this particular leg I was sitting in the right seat doing copilot duties with the chief pilot flying the aircraft. We were climbing and cleared to 10000 ft by ZNY. At 9700 ft we were still climbing at over 2000 FPM and I stated 'check altitude.' the PF noted that the autoplt had kicked off and started to stop the climb at 10000 ft. We went above our assigned altitude by 350-400 ft before descent to the correct altitude. ATC told us to check altitude at the top of our climb and we advised them that we were correcting and that the autoplt had kicked off.

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Original NASA ASRS Text

Title: MDT ACFT. ALTDEV ON CLB. AUTOPLT HAD KICKED OFF AND ACFT CLBED 400 FT ABOVE ASSIGNED. PF RETURNED ACFT TO ASSIGNED.

Narrative: I WAS ASSIGNED AS CAPT FOR THIS FLT BY MY COMPANY, BUT ON THIS PARTICULAR LEG I WAS SITTING IN THE R SEAT DOING COPLT DUTIES WITH THE CHIEF PLT FLYING THE ACFT. WE WERE CLBING AND CLRED TO 10000 FT BY ZNY. AT 9700 FT WE WERE STILL CLBING AT OVER 2000 FPM AND I STATED 'CHK ALT.' THE PF NOTED THAT THE AUTOPLT HAD KICKED OFF AND STARTED TO STOP THE CLB AT 10000 FT. WE WENT ABOVE OUR ASSIGNED ALT BY 350-400 FT BEFORE DSCNT TO THE CORRECT ALT. ATC TOLD US TO CHK ALT AT THE TOP OF OUR CLB AND WE ADVISED THEM THAT WE WERE CORRECTING AND THAT THE AUTOPLT HAD KICKED OFF.

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.