 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
An air carrier flight crew flying a B737 in chicago airspace reports confusion with ATC concerning a clearance to climb.
| Attributes | |
| ACN | 454915 |
| Time | |
| Date | 199911 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : zau.artcc |
| Altitude | msl bound lower : 33000 msl bound upper : 37000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| 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 |
| Qualification | pilot : multi engine pilot : atp |
| ASRS Report | 454915 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude other anomaly other |
| Independent Detector | other controllera other flight crewa other flight crewb |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | FAA ATC Human Performance Flight Crew Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Intra Facility Coordination Failure |
Narrative:
Altitude discrepancy. ATC facility: ZAU. ATC cleared our flight to climb to FL370 from FL330. I read back cleared to climb to FL370 and started climb. Passing FL337, controller said to maintain FL330. I told the controller that I read back cleared to climb to FL370. He said that he would check. Upon switching to the next frequency, I once again told the controller that he had cleared the flight to climb to FL370. He at that point said it was his mistake.
Original NASA ASRS Text
Title: AN ACR FLC FLYING A B737 IN CHICAGO AIRSPACE RPTS CONFUSION WITH ATC CONCERNING A CLRNC TO CLB.
Narrative: ALT DISCREPANCY. ATC FACILITY: ZAU. ATC CLRED OUR FLT TO CLB TO FL370 FROM FL330. I READ BACK CLRED TO CLB TO FL370 AND STARTED CLB. PASSING FL337, CTLR SAID TO MAINTAIN FL330. I TOLD THE CTLR THAT I READ BACK CLRED TO CLB TO FL370. HE SAID THAT HE WOULD CHK. UPON SWITCHING TO THE NEXT FREQ, I ONCE AGAIN TOLD THE CTLR THAT HE HAD CLRED THE FLT TO CLB TO FL370. HE AT THAT POINT SAID IT WAS HIS MISTAKE.
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.