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An air carrier A300 crew departed its flight level without clearance. Error admitted. Amended clearance altitude assignment.
| Attributes | |
| ACN | 347590 |
| Time | |
| Date | 199609 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : orl |
| State Reference | FL |
| Altitude | msl bound lower : 34500 msl bound upper : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zma |
| Operator | common carrier : air carrier |
| Make Model Name | A300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| ASRS Report | 347590 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 347898 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
ATC previously cleared us pilot's discretion to descend to FL240, then subsequently canceled clearance saying 'maintain FL350.' FL350 was reset in the altitude window. When profile hook said start descent, I started down in vertical speed and the captain called departing FL350 for FL240 and the controller immediately told us to maintain FL350. Recognizing my mistake, I changed the FL345 and the controller said no more about it. We were in radar contact and had no traffic on TCASII within 10 mi. Night VMC.
Original NASA ASRS Text
Title: AN ACR A300 CREW DEPARTED ITS FLT LEVEL WITHOUT CLRNC. ERROR ADMITTED. AMENDED CLRNC ALT ASSIGNMENT.
Narrative: ATC PREVIOUSLY CLRED US PLT'S DISCRETION TO DSND TO FL240, THEN SUBSEQUENTLY CANCELED CLRNC SAYING 'MAINTAIN FL350.' FL350 WAS RESET IN THE ALT WINDOW. WHEN PROFILE HOOK SAID START DSCNT, I STARTED DOWN IN VERT SPD AND THE CAPT CALLED DEPARTING FL350 FOR FL240 AND THE CTLR IMMEDIATELY TOLD US TO MAINTAIN FL350. RECOGNIZING MY MISTAKE, I CHANGED THE FL345 AND THE CTLR SAID NO MORE ABOUT IT. WE WERE IN RADAR CONTACT AND HAD NO TFC ON TCASII WITHIN 10 MI. NIGHT VMC.
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.