Altitude overshot by DC10 autoplt as crew was talking with controller at lfff, first officer.

Attributes
ACN	544465
Time
Date	200204
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ebci.airport
State Reference	FO
Altitude	msl single value : 26000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : lfff.artcc
Operator	common carrier : air carrier
Make Model Name	DC-10 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : enroute altitude change
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : private pilot : multi engine pilot : instrument pilot : atp pilot : commercial
Experience	flight time last 90 days : 120 flight time total : 13500 flight time type : 15000
ASRS Report	544465
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : overshoot non adherence : clearance other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : returned to assigned altitude none taken : detected after the fact
Supplementary
Problem Areas	Aircraft ATC Human Performance Flight Crew Human Performance
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

Autoplt engaged and altitude capture feature armed. Just prior to leveloff, ATC requested when would we like further climb. As we discussed options, captain's altimeter went to FL263 and first officer's altimeter FL262. We descended back to FL260. ATC did not say anything.

Original NASA ASRS Text

Title: ALT OVERSHOT BY DC10 AUTOPLT AS CREW WAS TALKING WITH CTLR AT LFFF, FO.

Narrative: AUTOPLT ENGAGED AND ALT CAPTURE FEATURE ARMED. JUST PRIOR TO LEVELOFF, ATC REQUESTED WHEN WOULD WE LIKE FURTHER CLB. AS WE DISCUSSED OPTIONS, CAPT'S ALTIMETER WENT TO FL263 AND FO'S ALTIMETER FL262. WE DSNDED BACK TO FL260. ATC DID NOT SAY ANYTHING.

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.