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E120 flight crew incorrectly input altitude selector restr, thus overshot assigned crossing restr. First officer disagrees with PIC's response to ATC altitude query.
| Attributes | |
| ACN | 389968 |
| Time | |
| Date | 199801 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : sxc |
| State Reference | CA |
| Altitude | msl bound lower : 10000 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla tracon : gso |
| Operator | common carrier : air carrier |
| Make Model Name | Brasilia EMB-120 All Series |
| Flight Phase | descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 6200 flight time type : 900 |
| ASRS Report | 389868 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 270 flight time total : 12000 flight time type : 7000 |
| ASRS Report | 389970 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Flying scheduled commuter airline service in an EMB120. The captain was flying the leg. I was reviewing a chart. We were at FL240 and issued a clearance to descend and cross 30 DME northwest of sxc VOR at and maintain 11000 ft. We were descending at 3000 FPM when the autoplt failed to capture altitude at 11000 ft. The captain abruptly leveled off, but by this time we were close to 10000 ft. He immediately began a climb to return to assigned altitude of 11000 ft. ATC queried us about our altitude. The captain told me to tell him (ATC) we were at 11000 ft (because of his correction already being made). The controller made several comments about being able to give us lower if we needed it. We returned quickly to 11000 ft and nothing else followed. I do feel it is not in the interest of safety to misrepresent your altitude. Supplemental information from acn 389970: I was PNF and must have set the altitude alerter with a 'half digit' because while descending at 3000 FPM we went through 11000 ft and the autoplt did not catch the altitude, both first officer's had 'altitude select' missing.
Original NASA ASRS Text
Title: E120 FLC INCORRECTLY INPUT ALT SELECTOR RESTR, THUS OVERSHOT ASSIGNED XING RESTR. FO DISAGREES WITH PIC'S RESPONSE TO ATC ALT QUERY.
Narrative: FLYING SCHEDULED COMMUTER AIRLINE SVC IN AN EMB120. THE CAPT WAS FLYING THE LEG. I WAS REVIEWING A CHART. WE WERE AT FL240 AND ISSUED A CLRNC TO DSND AND CROSS 30 DME NW OF SXC VOR AT AND MAINTAIN 11000 FT. WE WERE DSNDING AT 3000 FPM WHEN THE AUTOPLT FAILED TO CAPTURE ALT AT 11000 FT. THE CAPT ABRUPTLY LEVELED OFF, BUT BY THIS TIME WE WERE CLOSE TO 10000 FT. HE IMMEDIATELY BEGAN A CLB TO RETURN TO ASSIGNED ALT OF 11000 FT. ATC QUERIED US ABOUT OUR ALT. THE CAPT TOLD ME TO TELL HIM (ATC) WE WERE AT 11000 FT (BECAUSE OF HIS CORRECTION ALREADY BEING MADE). THE CTLR MADE SEVERAL COMMENTS ABOUT BEING ABLE TO GIVE US LOWER IF WE NEEDED IT. WE RETURNED QUICKLY TO 11000 FT AND NOTHING ELSE FOLLOWED. I DO FEEL IT IS NOT IN THE INTEREST OF SAFETY TO MISREPRESENT YOUR ALT. SUPPLEMENTAL INFO FROM ACN 389970: I WAS PNF AND MUST HAVE SET THE ALT ALERTER WITH A 'HALF DIGIT' BECAUSE WHILE DSNDING AT 3000 FPM WE WENT THROUGH 11000 FT AND THE AUTOPLT DID NOT CATCH THE ALT, BOTH FO'S HAD 'ALT SELECT' MISSING.
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.