Altitude deviation. Overshoot in climb.

Attributes
ACN	148519
Time
Date	199006
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : gck
State Reference	KS
Altitude	msl bound lower : 35000 msl bound upper : 35300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zkc
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 5500 flight time type : 1200
ASRS Report	148519
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : cfi pilot : atp
Experience	flight time last 90 days : 210 flight time total : 5500 flight time type : 1100
ASRS Report	148778
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : overshoot non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Cleared to FL350. Just before vocal warning I saw us slowly climbing at 35300'. Disconnected the autoplt and pushed it back down to FL350 picking up some buffeting during the speed build-up. We made the standard call at 1000' and checked that the autoplt was armed for capture at FL350. I've been doing better. It's been 10 months or so since I've had to send one of these in. I've prevented this from happening at lest 6 times since my last report. Of course by now I'm sure you know this is an medium large transport aircraft. West/O a doubt, there is a problem with the altitude capturing capability of this aircraft's autoplt. Why won't something be done before someone gets hurt? Thanks for helping as much as you can.

Original NASA ASRS Text

Title: ALT DEVIATION. OVERSHOOT IN CLIMB.

Narrative: CLRED TO FL350. JUST BEFORE VOCAL WARNING I SAW US SLOWLY CLBING AT 35300'. DISCONNECTED THE AUTOPLT AND PUSHED IT BACK DOWN TO FL350 PICKING UP SOME BUFFETING DURING THE SPD BUILD-UP. WE MADE THE STANDARD CALL AT 1000' AND CHKED THAT THE AUTOPLT WAS ARMED FOR CAPTURE AT FL350. I'VE BEEN DOING BETTER. IT'S BEEN 10 MONTHS OR SO SINCE I'VE HAD TO SEND ONE OF THESE IN. I'VE PREVENTED THIS FROM HAPPENING AT LEST 6 TIMES SINCE MY LAST RPT. OF COURSE BY NOW I'M SURE YOU KNOW THIS IS AN MLG ACFT. W/O A DOUBT, THERE IS A PROB WITH THE ALT CAPTURING CAPABILITY OF THIS ACFT'S AUTOPLT. WHY WON'T SOMETHING BE DONE BEFORE SOMEONE GETS HURT? THANKS FOR HELPING AS MUCH AS YOU CAN.

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.