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An air carrier flight crew flying B737 descending near dfw improperly set their altimeters resulting in leveling off 400 ft below their assigned altitude.
| Attributes | |
| ACN | 434560 |
| Time | |
| Date | 199904 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : cve.vor |
| State Reference | TX |
| Altitude | msl single value : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : d10.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 13000 flight time type : 12000 |
| ASRS Report | 434560 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : far non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : became reoriented flight crew : returned to original clearance |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Our altimeter setting was misunderstood on ATIS. A setting of 29.94 was put in altimeter window when the actual altimeter setting was 29.54. This caused us to be 400 ft low. ATIS should have warning of low altimeter and all numbers should be annunciated like aim states.
Original NASA ASRS Text
Title: AN ACR FLC FLYING B737 DSNDING NEAR DFW IMPROPERLY SET THEIR ALTIMETERS RESULTING IN LEVELING OFF 400 FT BELOW THEIR ASSIGNED ALT.
Narrative: OUR ALTIMETER SETTING WAS MISUNDERSTOOD ON ATIS. A SETTING OF 29.94 WAS PUT IN ALTIMETER WINDOW WHEN THE ACTUAL ALTIMETER SETTING WAS 29.54. THIS CAUSED US TO BE 400 FT LOW. ATIS SHOULD HAVE WARNING OF LOW ALTIMETER AND ALL NUMBERS SHOULD BE ANNUNCIATED LIKE AIM STATES.
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.