Altitude deviation.

Attributes
ACN	316950
Time
Date	199509
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : lvz
State Reference	KY
Altitude	msl bound lower : 22000 msl bound upper : 22400
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	artcc : zny
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : atp pilot : commercial
Experience	flight time last 90 days : 160 flight time total : 6000 flight time type : 1000
ASRS Report	316950
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : overshoot altitude deviation : undershoot non adherence : clearance other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : overcame equipment problem other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Failed to reset altimeter passing FL180 on climb. Once reaching cruise altitude of FL280, we were immediately descended to FL220. Altimeter remained set at 30.43. This resulted in a 400 ft altitude deviation. We caught the error when queried by ATC.

Original NASA ASRS Text

Title: ALTDEV.

Narrative: FAILED TO RESET ALTIMETER PASSING FL180 ON CLB. ONCE REACHING CRUISE ALT OF FL280, WE WERE IMMEDIATELY DSNDED TO FL220. ALTIMETER REMAINED SET AT 30.43. THIS RESULTED IN A 400 FT ALTDEV. WE CAUGHT THE ERROR WHEN QUERIED BY ATC.

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.