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An air carrier medium large transport may have climbed through its assigned altitude, or maybe it was given the wrong altitude.
| Attributes | |
| ACN | 266563 |
| Time | |
| Date | 199403 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : czq |
| State Reference | CA |
| Altitude | msl bound lower : 31000 msl bound upper : 32500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla |
| 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 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 160 flight time total : 7000 flight time type : 1000 |
| ASRS Report | 266563 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 270 flight time total : 6500 flight time type : 270 |
| ASRS Report | 266560 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Handed off from las departure to ZLA and assigned 35000 ft. First officer responded 'climb to FL350.' 1 min later, first officer said 'confirm FL350 for air carrier.' center said 'affirmative, climb to FL350.' climbing through 32500 ft center said 'air carrier say altitude.' I responded 32500 ft. He said 'you were assigned FL310, descend and maintain 31000 ft immediately, you have traffic at FL330 and 10 mi.' we descended to 31000 ft immediately there was no conflict or near miss. Neither one of us remember being assigned to FL310 before the incident. I was talking to the company frequency giving las operations our out, off, ETA, and fuel information when we were initially assigned FL350. We don't believe it was our mistake but if it was, some possible factors were: 1) it was our 6TH leg of the day, 2) we were on duty for over 12 hours, 3) it was almost midnight by our body clock.
Original NASA ASRS Text
Title: AN ACR MLG MAY HAVE CLBED THROUGH ITS ASSIGNED ALT, OR MAYBE IT WAS GIVEN THE WRONG ALT.
Narrative: HANDED OFF FROM LAS DEP TO ZLA AND ASSIGNED 35000 FT. FO RESPONDED 'CLB TO FL350.' 1 MIN LATER, FO SAID 'CONFIRM FL350 FOR ACR.' CTR SAID 'AFFIRMATIVE, CLB TO FL350.' CLBING THROUGH 32500 FT CTR SAID 'ACR SAY ALT.' I RESPONDED 32500 FT. HE SAID 'YOU WERE ASSIGNED FL310, DSND AND MAINTAIN 31000 FT IMMEDIATELY, YOU HAVE TFC AT FL330 AND 10 MI.' WE DSNDED TO 31000 FT IMMEDIATELY THERE WAS NO CONFLICT OR NEAR MISS. NEITHER ONE OF US REMEMBER BEING ASSIGNED TO FL310 BEFORE THE INCIDENT. I WAS TALKING TO THE COMPANY FREQ GIVING LAS OPS OUR OUT, OFF, ETA, AND FUEL INFO WHEN WE WERE INITIALLY ASSIGNED FL350. WE DON'T BELIEVE IT WAS OUR MISTAKE BUT IF IT WAS, SOME POSSIBLE FACTORS WERE: 1) IT WAS OUR 6TH LEG OF THE DAY, 2) WE WERE ON DUTY FOR OVER 12 HRS, 3) IT WAS ALMOST MIDNIGHT BY OUR BODY CLOCK.
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.