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A B727-200 crew, departing bos, reacted to someone else's clearance, departing their assigned altitude.
| Attributes | |
| ACN | 531140 |
| Time | |
| Date | 200111 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : bos.airport |
| State Reference | MA |
| Altitude | msl single value : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zbw.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 140 flight time total : 10000 flight time type : 6000 |
| ASRS Report | 531140 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : published procedure non adherence : far non adherence : clearance other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : returned to assigned altitude |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance Airspace Structure |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Climbing out of bos en route to phl, we were given an altitude assignment of 10000 ft. As we were approaching 10000 ft, ATC gave us a frequency change. There was congestion on this new frequency with both pilots and controllers talking over each other. ATC called our flight number, then was stepped on by another aircraft talking over ATC. When the congestion cleared, I heard ATC say 'XXX.' I answered, 'climb to flight level 180' and the climb continued through 10000 ft. ATC came back right away and said, 'turn right 180 degrees, maintain 10000 ft. The climb was stopped at 10320 ft and quickly returned to 10000 ft. The aircraft I was flying was equipped with TCASII and there were no conflicts with any traffic on the TCASII or reported by ATC. I consider the 2 major contributing factors of this event to be: 1) frequency congestion, and 2) my expecting and wanting a higher altitude.
Original NASA ASRS Text
Title: A B727-200 CREW, DEPARTING BOS, REACTED TO SOMEONE ELSE'S CLRNC, DEPARTING THEIR ASSIGNED ALT.
Narrative: CLBING OUT OF BOS ENRTE TO PHL, WE WERE GIVEN AN ALT ASSIGNMENT OF 10000 FT. AS WE WERE APCHING 10000 FT, ATC GAVE US A FREQ CHANGE. THERE WAS CONGESTION ON THIS NEW FREQ WITH BOTH PLTS AND CTLRS TALKING OVER EACH OTHER. ATC CALLED OUR FLT NUMBER, THEN WAS STEPPED ON BY ANOTHER ACFT TALKING OVER ATC. WHEN THE CONGESTION CLRED, I HEARD ATC SAY 'XXX.' I ANSWERED, 'CLB TO FLT LEVEL 180' AND THE CLB CONTINUED THROUGH 10000 FT. ATC CAME BACK RIGHT AWAY AND SAID, 'TURN R 180 DEGS, MAINTAIN 10000 FT. THE CLB WAS STOPPED AT 10320 FT AND QUICKLY RETURNED TO 10000 FT. THE ACFT I WAS FLYING WAS EQUIPPED WITH TCASII AND THERE WERE NO CONFLICTS WITH ANY TFC ON THE TCASII OR RPTED BY ATC. I CONSIDER THE 2 MAJOR CONTRIBUTING FACTORS OF THIS EVENT TO BE: 1) FREQ CONGESTION, AND 2) MY EXPECTING AND WANTING A HIGHER ALT.
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.