Medium large transport crew had altitude deviation.

Attributes
ACN	451475
Time
Date	199910
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : zan.artcc
State Reference	AK
Altitude	msl bound lower : 29440 msl bound upper : 29000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zan.artcc
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : private pilot : multi engine pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 200 flight time total : 8500 flight time type : 2300
ASRS Report	451475
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : overshoot non adherence : company policies non adherence : far non adherence : published procedure non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued alert flight crew : returned to assigned altitude
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Climb through FL180 with 29.48 set in altimeter and autoplt hooked to my altimeter. Captain's altimeter was set to 29.92 but we were both busy and mine stayed on local setting. We ended up 300 ft high before I leveled (disconnected the autoplt) and descended to FL290 again. The leg from sitka to ketchikan was short and I haven't been there for a while.

Original NASA ASRS Text

Title: MLG CREW HAD ALTDEV.

Narrative: CLB THROUGH FL180 WITH 29.48 SET IN ALTIMETER AND AUTOPLT HOOKED TO MY ALTIMETER. CAPT'S ALTIMETER WAS SET TO 29.92 BUT WE WERE BOTH BUSY AND MINE STAYED ON LCL SETTING. WE ENDED UP 300 FT HIGH BEFORE I LEVELED (DISCONNECTED THE AUTOPLT) AND DSNDED TO FL290 AGAIN. THE LEG FROM SITKA TO KETCHIKAN WAS SHORT AND I HAVEN'T BEEN THERE FOR A WHILE.

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.