An md super 80 leveled off in cruise and was advised by ATC of 300 ft altitude deviation caused by failure to set altimeters to 29 pt 92.

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Attributes
ACN	432510
Time
Date	199903
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : txk.airport
State Reference	AR
Altitude	msl bound lower : 36700 msl bound upper : 37000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zme.artcc
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : level
Route In Use	enroute airway : j42.airway
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	432510
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : multi engine pilot : commercial
ASRS Report	432511
Events
Anomaly	aircraft equipment problem : critical altitude deviation : undershoot non adherence : published procedure non adherence : far
Independent Detector	atc equipment other atc equipment : radar other controllera
Resolutory Action	controller : issued alert flight crew : returned to original clearance
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

ATC informed of altimeter setting. We realized we had not reset altimeters climbing through transition. Upon reset of altimeter to 29.92, altimeter indicated 36680 ft.. Altimeter was reset and climb to FL370 was initiated. I blame fatigue, as our wake-up was early morning.

Original NASA ASRS Text

Title: AN MD SUPER 80 LEVELED OFF IN CRUISE AND WAS ADVISED BY ATC OF 300 FT ALTDEV CAUSED BY FAILURE TO SET ALTIMETERS TO 29 PT 92.

Narrative: ATC INFORMED OF ALTIMETER SETTING. WE REALIZED WE HAD NOT RESET ALTIMETERS CLBING THROUGH TRANSITION. UPON RESET OF ALTIMETER TO 29.92, ALTIMETER INDICATED 36680 FT.. ALTIMETER WAS RESET AND CLB TO FL370 WAS INITIATED. I BLAME FATIGUE, AS OUR WAKE-UP WAS EARLY MORNING.

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.