MD11 crew mis set altimeters by 1 inch at the transition altitude.

Attributes
ACN	528994
Time
Date	200111
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : anc.airport
State Reference	AK
Altitude	msl bound lower : 9500 msl bound upper : 10000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : a11.tracon
Operator	common carrier : air carrier
Make Model Name	MD-11
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : vacating altitude
Route In Use	arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi pilot : flight engineer
Experience	flight time last 90 days : 150 flight time total : 14000 flight time type : 100
ASRS Report	528994
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 7900 flight time type : 1000
ASRS Report	529545
Events
Anomaly	altitude deviation : overshoot inflight encounter : weather inflight encounter other non adherence : far non adherence : published procedure non adherence : company policies other anomaly other
Independent Detector	other flight crewa other flight crewb other flight crewb
Resolutory Action	none taken : detected after the fact other
Supplementary
Problem Areas	Flight Crew Human Performance Weather
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Anc ATIS and anc approach issued a local altimeter setting of 28.82. Approach prefaced this with the word 'low!' crew mis set all three altimeters to 29.82 at 18000 ft. The first officer was the PF with the autoplt engaged. The crew discovered the error when the aircraft was descending to 10000 ft passing 10400 ft. Once the new altimeter setting was used our altitude was approximately 1000 ft in error. The first officer disengaged the autoplt and flew the aircraft back to our assigned altitude of 10000 ft. Maximum deviation was EST to be within 500-600 ft. Fatigue and the concern of expected marginal WX contributed to the oversight (all 3 crewmembers). Supplemental information from acn 529545: contributing factors were crew fatigue (up all night flying from vhhh) and the distraction of concerns regarding deteriorating marginal WX (snow, ice, fog) at destination.

Original NASA ASRS Text

Title: MD11 CREW MIS SET ALTIMETERS BY 1 INCH AT THE TRANSITION ALT.

Narrative: ANC ATIS AND ANC APCH ISSUED A LCL ALTIMETER SETTING OF 28.82. APCH PREFACED THIS WITH THE WORD 'LOW!' CREW MIS SET ALL THREE ALTIMETERS TO 29.82 AT 18000 FT. THE FO WAS THE PF WITH THE AUTOPLT ENGAGED. THE CREW DISCOVERED THE ERROR WHEN THE ACFT WAS DSNDING TO 10000 FT PASSING 10400 FT. ONCE THE NEW ALTIMETER SETTING WAS USED OUR ALT WAS APPROX 1000 FT IN ERROR. THE FO DISENGAGED THE AUTOPLT AND FLEW THE ACFT BACK TO OUR ASSIGNED ALT OF 10000 FT. MAX DEV WAS EST TO BE WITHIN 500-600 FT. FATIGUE AND THE CONCERN OF EXPECTED MARGINAL WX CONTRIBUTED TO THE OVERSIGHT (ALL 3 CREWMEMBERS). SUPPLEMENTAL INFO FROM ACN 529545: CONTRIBUTING FACTORS WERE CREW FATIGUE (UP ALL NIGHT FLYING FROM VHHH) AND THE DISTRACTION OF CONCERNS REGARDING DETERIORATING MARGINAL WX (SNOW, ICE, FOG) AT DEST.

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.