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B767-300 flight crew requested a climb in south american airspace. Flight crew believed the request was approved and climbed to the requested altitude. When the flight crew reported level; they were informed that they had not been given clearance to climb.
| Attributes | |
| ACN | 759725 |
| Time | |
| Date | 200710 |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | atc facility : sllf.artcc |
| State Reference | FO |
| Altitude | msl bound lower : 30000 msl bound upper : 32000 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : sllf.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : enroute altitude change |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 759725 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| ASRS Report | 759724 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : returned to assigned altitude |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Navigational Facility ATC Human Performance |
| Primary Problem | ATC Human Performance |
Narrative:
After contacting lpa center over sidak intersection I requested climb to FL320; center replied with stand by. Approximately 10 mins later I received a call that was barely readable to climb to FL320. I confirmed the clearance 3 times before executing the climb to FL320. At FL320 I confirmed with ATC that I was level at FL320; at which time ATC replied that I was not cleared to FL320; to descend to FL300; which I complied with immediately. After leveling at FL300 I again confirmed level with ATC. ATC again replied with the wrong flight number.
Original NASA ASRS Text
Title: B767-300 FLT CREW REQUESTED A CLIMB IN SOUTH AMERICAN AIRSPACE. FLT CREW BELIEVED THE REQUEST WAS APPROVED AND CLIMBED TO THE REQUESTED ALT. WHEN THE FLT CREW REPORTED LEVEL; THEY WERE INFORMED THAT THEY HAD NOT BEEN GIVEN CLRNC TO CLIMB.
Narrative: AFTER CONTACTING LPA CTR OVER SIDAK INTXN I REQUESTED CLB TO FL320; CTR REPLIED WITH STAND BY. APPROX 10 MINS LATER I RECEIVED A CALL THAT WAS BARELY READABLE TO CLB TO FL320. I CONFIRMED THE CLRNC 3 TIMES BEFORE EXECUTING THE CLB TO FL320. AT FL320 I CONFIRMED WITH ATC THAT I WAS LEVEL AT FL320; AT WHICH TIME ATC REPLIED THAT I WAS NOT CLRED TO FL320; TO DSND TO FL300; WHICH I COMPLIED WITH IMMEDIATELY. AFTER LEVELING AT FL300 I AGAIN CONFIRMED LEVEL WITH ATC. ATC AGAIN REPLIED WITH THE WRONG FLT NUMBER.
Data retrieved from NASA's ASRS site as of January 2009 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.