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First officer of an medium large transport allowed the aircraft to start descending off of altitude during vectors for a visual approach. The captain noticed and directed the first officer to immediately climb back.
| Attributes | |
| ACN | 352090 |
| Time | |
| Date | 199610 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : den |
| State Reference | CO |
| Altitude | msl bound lower : 10500 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : den |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Route In Use | approach : visual arrival 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 : 240 flight time total : 13000 flight time type : 850 |
| ASRS Report | 352090 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance |
| Independent Detector | 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:
Approach descent into den, copilot was flying. We were communicating with approach controller. First officer leveled off at 11000 ft, autoplt was off. WX was VMC. Captain's attention was diverted to my flight bag for information regarding the visual approach we were about to conduct to runway 16. I looked up to the altitude and immediately observed the first officer was descending out of 11000 ft to 10500 ft with no clearance. I immediately became aggressive with the first officer to climb back up to 11000 ft. No other traffic was observed in our vicinity by TCASII or visual. No further problems to the landing runway. I am under the absolute rule now of having all approach plates pertinent to the approach, visual or IMC, in front of both myself and the copilot.
Original NASA ASRS Text
Title: FO OF AN MLG ALLOWED THE ACFT TO START DSNDING OFF OF ALT DURING VECTORS FOR A VISUAL APCH. THE CAPT NOTICED AND DIRECTED THE FO TO IMMEDIATELY CLB BACK.
Narrative: APCH DSCNT INTO DEN, COPLT WAS FLYING. WE WERE COMMUNICATING WITH APCH CTLR. FO LEVELED OFF AT 11000 FT, AUTOPLT WAS OFF. WX WAS VMC. CAPT'S ATTN WAS DIVERTED TO MY FLT BAG FOR INFO REGARDING THE VISUAL APCH WE WERE ABOUT TO CONDUCT TO RWY 16. I LOOKED UP TO THE ALT AND IMMEDIATELY OBSERVED THE FO WAS DSNDING OUT OF 11000 FT TO 10500 FT WITH NO CLRNC. I IMMEDIATELY BECAME AGGRESSIVE WITH THE FO TO CLB BACK UP TO 11000 FT. NO OTHER TFC WAS OBSERVED IN OUR VICINITY BY TCASII OR VISUAL. NO FURTHER PROBS TO THE LNDG RWY. I AM UNDER THE ABSOLUTE RULE NOW OF HAVING ALL APCH PLATES PERTINENT TO THE APCH, VISUAL OR IMC, IN FRONT OF BOTH MYSELF AND THE COPLT.
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.