|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1801 To 2400|
|Locale Reference||atc facility : har|
|Altitude||msl bound lower : 24600|
msl bound upper : 25000
|Operator||general aviation : personal|
|Make Model Name||Any Unknown or Unlisted Aircraft Manufacturer|
|Flight Phase||cruise other|
|Function||flight crew : first officer|
|Qualification||pilot : instrument|
pilot : cfi
pilot : commercial
|Experience||flight time last 90 days : 45|
flight time total : 13000
flight time type : 1800
|Function||flight crew : captain|
oversight : pic
|Anomaly||altitude deviation : undershoot|
non adherence : far
non adherence other
other anomaly other
|Independent Detector||atc equipment other atc equipment : unspecified|
|Resolutory Action||flight crew : returned to intended course or assigned course|
|Air Traffic Incident||Pilot Deviation|
The PF (aircraft owner) in left seat, myself in right seat. Checklist item for resetting altimeters to 29.92 was missed due to a short period of high workload with failure to return to checklist at the appropriate point. ATC advised us we were 400 ft low and to check altimeters. They were checked and reset to the correct setting. The conclusion I have drawn is that when using manual checklist, when there is a break due to momentary high workload sits (ie, communications, heading, altitude changes) or whatever else might contribute to the break that checklist should be restarted from its beginning and accomplished, completed with, rechked in its entirety so that no item will be missed regardless of the break, including an altimeter setting.
Original NASA ASRS Text
Title: A PVT JET CLBS TO FL250 WITHOUT RESETTING THE ALTIMETERS TO 29 PT 92. ATC CALLS WITH A NOTICE OF ACFT BEING 400 FT TOO LOW.
Narrative: THE PF (ACFT OWNER) IN L SEAT, MYSELF IN R SEAT. CHKLIST ITEM FOR RESETTING ALTIMETERS TO 29.92 WAS MISSED DUE TO A SHORT PERIOD OF HIGH WORKLOAD WITH FAILURE TO RETURN TO CHKLIST AT THE APPROPRIATE POINT. ATC ADVISED US WE WERE 400 FT LOW AND TO CHK ALTIMETERS. THEY WERE CHKED AND RESET TO THE CORRECT SETTING. THE CONCLUSION I HAVE DRAWN IS THAT WHEN USING MANUAL CHKLIST, WHEN THERE IS A BREAK DUE TO MOMENTARY HIGH WORKLOAD SITS (IE, COMS, HDG, ALT CHANGES) OR WHATEVER ELSE MIGHT CONTRIBUTE TO THE BREAK THAT CHKLIST SHOULD BE RESTARTED FROM ITS BEGINNING AND ACCOMPLISHED, COMPLETED WITH, RECHKED IN ITS ENTIRETY SO THAT NO ITEM WILL BE MISSED REGARDLESS OF THE BREAK, INCLUDING AN ALTIMETER SETTING.
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.