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Flight crew of a DC9 overshot their assigned altitude due to not resetting their altimeter passing through FL180.
| Attributes | |
| ACN | 455850 |
| Time | |
| Date | 199911 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| State Reference | TN |
| Altitude | msl bound lower : 21400 msl bound upper : 21000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zme.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 4500 flight time type : 600 |
| ASRS Report | 455850 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : far non adherence other |
| Independent Detector | aircraft equipment other aircraft equipment : altimeter other flight crewa |
| Resolutory Action | flight crew : returned to assigned altitude other |
| Consequence | Other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Failed to switch from 30.30 altimeter to 29.92. Our altimeters showed 350 ft off. Corrected immediately. No ATC report on any conflicts.
Original NASA ASRS Text
Title: FLC OF A DC9 OVERSHOT THEIR ASSIGNED ALT DUE TO NOT RESETTING THEIR ALTIMETER PASSING THROUGH FL180.
Narrative: FAILED TO SWITCH FROM 30.30 ALTIMETER TO 29.92. OUR ALTIMETERS SHOWED 350 FT OFF. CORRECTED IMMEDIATELY. NO ATC RPT ON ANY CONFLICTS.
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.