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Flight crew of an embraer EMB120 overshot assigned leveloff altitude during climb due clearance dispute.
| Attributes | |
| ACN | 459400 |
| Time | |
| Date | 200001 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : smf.airport |
| State Reference | CA |
| Altitude | msl bound lower : 26000 msl bound upper : 26700 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zoa.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Brasilia EMB-120 All Series |
| Operating Under FAR Part | Part 119 |
| Flight Phase | climbout : intermediate altitude climbout : vacating altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 230 flight time total : 4000 flight time type : 1800 |
| ASRS Report | 459400 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued alert flight crew : returned to assigned altitude |
| Consequence | Other |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While climbing under autoplt control, ATC assigned what both pilots believed to be FL270. Captain, flying, set FL270 in altitude alerter window. First officer read back altitude FL270 to controller and confirmed altitude setting in window. Passing FL267, controller queried our altitude and informed us FL260 was assigned. We returned to FL260 without conflict or incident. It is my opinion that controllers are paying less attention to readbacks now that they are not considered responsible for verification of readbacks.
Original NASA ASRS Text
Title: FLC OF AN EMBRAER EMB120 OVERSHOT ASSIGNED LEVELOFF ALT DURING CLB DUE CLRNC DISPUTE.
Narrative: WHILE CLBING UNDER AUTOPLT CTL, ATC ASSIGNED WHAT BOTH PLTS BELIEVED TO BE FL270. CAPT, FLYING, SET FL270 IN ALT ALERTER WINDOW. FO READ BACK ALT FL270 TO CTLR AND CONFIRMED ALT SETTING IN WINDOW. PASSING FL267, CTLR QUERIED OUR ALT AND INFORMED US FL260 WAS ASSIGNED. WE RETURNED TO FL260 WITHOUT CONFLICT OR INCIDENT. IT IS MY OPINION THAT CTLRS ARE PAYING LESS ATTN TO READBACKS NOW THAT THEY ARE NOT CONSIDERED RESPONSIBLE FOR VERIFICATION OF READBACKS.
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.