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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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An air carrier large transport climbed from its assigned altitude without clearance. They returned to their altitude after they queried the controller about their assigned altitude.
| Attributes | |
| ACN | 360310 |
| Time | |
| Date | 199702 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dtw |
| State Reference | MI |
| Altitude | msl bound lower : 10000 msl bound upper : 10500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dtw |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 20000 flight time type : 400 |
| ASRS Report | 360310 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : private pilot : commercial |
| Experience | flight time last 90 days : 210 flight time total : 8000 |
| ASRS Report | 360311 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : became reoriented |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
As we were leveling at 10000 ft, we were given a speed restr and RNAV direct to a fix (wings). I thought I was also given 13000 ft and I continued the climb and asked the first officer to confirm the altitude. ATC said our clearance was only to 10000 ft. We returned to 10000 ft. I should have confirmed the new altitude prior to starting the climb. Supplemental information from acn 360311: I was distraction by trying to do 3 things at once (communicate, speed bug, execute 'direct to').
Original NASA ASRS Text
Title: AN ACR LGT CLBED FROM ITS ASSIGNED ALT WITHOUT CLRNC. THEY RETURNED TO THEIR ALT AFTER THEY QUERIED THE CTLR ABOUT THEIR ASSIGNED ALT.
Narrative: AS WE WERE LEVELING AT 10000 FT, WE WERE GIVEN A SPD RESTR AND RNAV DIRECT TO A FIX (WINGS). I THOUGHT I WAS ALSO GIVEN 13000 FT AND I CONTINUED THE CLB AND ASKED THE FO TO CONFIRM THE ALT. ATC SAID OUR CLRNC WAS ONLY TO 10000 FT. WE RETURNED TO 10000 FT. I SHOULD HAVE CONFIRMED THE NEW ALT PRIOR TO STARTING THE CLB. SUPPLEMENTAL INFO FROM ACN 360311: I WAS DISTR BY TRYING TO DO 3 THINGS AT ONCE (COMMUNICATE, SPD BUG, EXECUTE 'DIRECT TO').
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.