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A B727-200 freighter crew descended below their assigned altitude when the first officer resets his altimeter for station pressure then levels off at FL183 versus FL190. Flight crew realized their error and corrected.
| Attributes | |
| ACN | 355941 |
| Time | |
| Date | 199612 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : sea |
| State Reference | WA |
| Altitude | msl bound lower : 18300 msl bound upper : 19000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zse |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 75 flight time total : 6500 flight time type : 75 |
| ASRS Report | 355941 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 7000 flight time type : 3200 |
| ASRS Report | 355942 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance non adherence : far other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Descended to FL183 vice FL190. I was setting in new altimeter setting of 30.57 when told to level off at FL190. Should not have put new setting in until passing FL180. Attention was not on level off compounded by high altimeter setting.
Original NASA ASRS Text
Title: A B727-200 FREIGHTER CREW DSNDED BELOW THEIR ASSIGNED ALT WHEN THE FO RESETS HIS ALTIMETER FOR STATION PRESSURE THEN LEVELS OFF AT FL183 VERSUS FL190. FLC REALIZED THEIR ERROR AND CORRECTED.
Narrative: DSNDED TO FL183 VICE FL190. I WAS SETTING IN NEW ALTIMETER SETTING OF 30.57 WHEN TOLD TO LEVEL OFF AT FL190. SHOULD NOT HAVE PUT NEW SETTING IN UNTIL PASSING FL180. ATTN WAS NOT ON LEVEL OFF COMPOUNDED BY HIGH 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.