Widebody transport overshoots assigned altitude.

Attributes
ACN	226050
Time
Date	199211
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : bet airport : anc
State Reference	AK
Altitude	msl bound lower : 31000 msl bound upper : 32000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zan
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 4 Turbojet Eng
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 85 flight time total : 12000
ASRS Report	226050
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 13000 flight time type : 2000
ASRS Report	226287
Events
Anomaly	altitude deviation : overshoot non adherence : clearance non adherence : far
Independent Detector	other controllera
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:

We were flying anc to nrt. The anc altimeter was 28.94. At 18000 ft all 3 of us independently misset our altimeters to 28.92 instead of 29.92. The error was caught by center after we leveled off at indicated assigned altitude FL310. Our altitude readout to center read our actual fl FL320. There was no traffic conflict. The error was simply a lack of awareness by all 3 crew members. The contributing factor, I believe, was that the crew was tired. We were 5 days into an international trip. The day before we had flown tpe-nrt-anc, flying all night and arriving in anc XA00 am local. We were awakened very early local for this departure. On our body clocks, this is the time in the far east that we had been going to sleep in previous 2 days. I believe our ability to rest and be sharp for this departure was compromised by our schedule. The far's do not adequately address the need for rest. Supplemental information from acn 226287. The last time I raised a serious question about it our company president suggested that I could be removed from the payroll if I didn't shut up and fly the trip.

Original NASA ASRS Text

Title: WDB OVERSHOOTS ASSIGNED ALT.

Narrative: WE WERE FLYING ANC TO NRT. THE ANC ALTIMETER WAS 28.94. AT 18000 FT ALL 3 OF US INDEPENDENTLY MISSET OUR ALTIMETERS TO 28.92 INSTEAD OF 29.92. THE ERROR WAS CAUGHT BY CTR AFTER WE LEVELED OFF AT INDICATED ASSIGNED ALT FL310. OUR ALT READOUT TO CTR READ OUR ACTUAL FL FL320. THERE WAS NO TFC CONFLICT. THE ERROR WAS SIMPLY A LACK OF AWARENESS BY ALL 3 CREW MEMBERS. THE CONTRIBUTING FACTOR, I BELIEVE, WAS THAT THE CREW WAS TIRED. WE WERE 5 DAYS INTO AN INTL TRIP. THE DAY BEFORE WE HAD FLOWN TPE-NRT-ANC, FLYING ALL NIGHT AND ARRIVING IN ANC XA00 AM LCL. WE WERE AWAKENED VERY EARLY LCL FOR THIS DEP. ON OUR BODY CLOCKS, THIS IS THE TIME IN THE FAR EAST THAT WE HAD BEEN GOING TO SLEEP IN PREVIOUS 2 DAYS. I BELIEVE OUR ABILITY TO REST AND BE SHARP FOR THIS DEP WAS COMPROMISED BY OUR SCHEDULE. THE FAR'S DO NOT ADEQUATELY ADDRESS THE NEED FOR REST. SUPPLEMENTAL INFO FROM ACN 226287. THE LAST TIME I RAISED A SERIOUS QUESTION ABOUT IT OUR COMPANY PRESIDENT SUGGESTED THAT I COULD BE REMOVED FROM THE PAYROLL IF I DIDN'T SHUT UP AND FLY THE TRIP.

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.