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With the altimeter not set to the correct setting an airline crew descends below assigned altitude near bdl, ct.
| Attributes | |
| ACN | 466680 |
| Time | |
| Date | 200003 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : bdl.airport |
| State Reference | CT |
| Altitude | msl bound lower : 10600 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zbw.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival star : deer park.2 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : instrument pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 210 flight time total : 11000 flight time type : 6000 |
| ASRS Report | 466680 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : multi engine pilot : instrument |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : company policies non adherence : published procedure non adherence : far |
| Independent Detector | other controllerb |
| Resolutory Action | controller : issued alert flight crew : returned to assigned altitude |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While flying deer park two arrival we were cleared to cross madison VOR at 11000 ft. Passing 18000 ft I called for descent checklist the altimeter setting was 29.57. I accidentally put 30.57 on my altimeters. The first officer announced the checklist was complete. While showing 12000 ft on my altimeters, descending, ZBW was asking if we were leveling off at 11000 ft at which point I disconnected the autoplt and climbing back to 11000 ft with my altimeters being reset to 29.57, resulting in approximately 400 ft low altitude. Upon asking the first officer why he didn't mention the wrong altimeter setting, he stated that he only looked at .57 and didn't bother to check the first 2 digits.
Original NASA ASRS Text
Title: WITH THE ALTIMETER NOT SET TO THE CORRECT SETTING AN AIRLINE CREW DSNDS BELOW ASSIGNED ALT NEAR BDL, CT.
Narrative: WHILE FLYING DEER PARK TWO ARR WE WERE CLRED TO CROSS MADISON VOR AT 11000 FT. PASSING 18000 FT I CALLED FOR DSCNT CHKLIST THE ALTIMETER SETTING WAS 29.57. I ACCIDENTALLY PUT 30.57 ON MY ALTIMETERS. THE FO ANNOUNCED THE CHKLIST WAS COMPLETE. WHILE SHOWING 12000 FT ON MY ALTIMETERS, DSNDING, ZBW WAS ASKING IF WE WERE LEVELING OFF AT 11000 FT AT WHICH POINT I DISCONNECTED THE AUTOPLT AND CLBING BACK TO 11000 FT WITH MY ALTIMETERS BEING RESET TO 29.57, RESULTING IN APPROX 400 FT LOW ALT. UPON ASKING THE FO WHY HE DIDN'T MENTION THE WRONG ALTIMETER SETTING, HE STATED THAT HE ONLY LOOKED AT .57 AND DIDN'T BOTHER TO CHK THE FIRST 2 DIGITS.
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.