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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Altitude deviation altitude overshot in EMB120. First officer busy with copying ATIS. PIC PF flight crew distraction task behavior complacency. ARTCC radar controller vigilance alerts them to the deviation.
| Attributes | |
| ACN | 341280 |
| Time | |
| Date | 199607 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : czq |
| State Reference | CA |
| Altitude | msl bound lower : 12000 msl bound upper : 13000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zoa |
| Operator | common carrier : air carrier |
| Make Model Name | Xingu EMB-121 All Series |
| Operating Under FAR Part | Part 135 |
| Navigation In Use | Other |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 300 flight time total : 11000 flight time type : 1400 |
| ASRS Report | 341280 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 5200 flight time type : 1000 |
| ASRS Report | 340966 |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : overshoot non adherence : clearance non adherence : published procedure other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : became reoriented other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
This was a scheduled flight from sfo to fat. Everything was normal. I (the captain) was the flying pilot and I had the autopilot engaged. I initiated the descent with the autopilot upon being cleared to FL150 from FL170. We were late cleared to FL130. We were both reviewing charts and the approach when the controller called attention to our altitude which was FL120 and descending. We immediately returned to FL130. The contributing factor was not monitoring the autopilot by the crew. Supplemental information from acn 340966: the autopilot failed to capture the pre- set altitude. I read back the 13000 ft response to ATC, and noted that the captain set the altimeter alerter to 13000 feet. I then communicated to the captain that I was off number '1' communication and listening to the fresno ATIS and copying the information down when the deviation occured.
Original NASA ASRS Text
Title: ALTDEV ALT OVERSHOT IN EMB120. FO BUSY WITH COPYING ATIS. PIC PF FLC DISTR TASK BEHAVIOR COMPLACENCY. ARTCC RADAR CTLR VIGILANCE ALERTS THEM TO THE DEV.
Narrative: THIS WAS A SCHEDULED FLT FROM SFO TO FAT. EVERYTHING WAS NORMAL. I (THE CAPT) WAS THE FLYING PILOT AND I HAD THE AUTOPILOT ENGAGED. I INITIATED THE DESCENT WITH THE AUTOPILOT UPON BEING CLEARED TO FL150 FROM FL170. WE WERE LATE CLEARED TO FL130. WE WERE BOTH REVIEWING CHARTS AND THE APPROACH WHEN THE CONTROLLER CALLED ATTENTION TO OUR ALTITUDE WHICH WAS FL120 AND DESCENDING. WE IMMEDIATELY RETURNED TO FL130. THE CONTRIBUTING FACTOR WAS NOT MONITORING THE AUTOPILOT BY THE CREW. SUPPLEMENTAL INFO FROM ACN 340966: THE AUTOPILOT FAILED TO CAPTURE THE PRE- SET ALTITUDE. I READ BACK THE 13000 FT RESPONSE TO ATC, AND NOTED THAT THE CAPTAIN SET THE ALTIMETER ALERTER TO 13000 FEET. I THEN COMMUNICATED TO THE CAPTAIN THAT I WAS OFF NUMBER '1' COM AND LISTENING TO THE FRESNO ATIS AND COPYING THE INFORMATION DOWN WHEN THE DEVIATION OCCURED.
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.