 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Medium large transport aircraft in descent set wrong altitude in FMS and descended through the assigned by 1000 ft. Turbulence distracted flight crew with PA announcements.
| Attributes | |
| ACN | 349020 |
| Time | |
| Date | 199609 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : las |
| State Reference | NV |
| Altitude | msl bound lower : 11000 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | enroute airway : zla |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : flight engineer pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 250 flight time total : 6000 flight time type : 2400 |
| ASRS Report | 349020 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 20100 flight time type : 18000 |
| ASRS Report | 348824 |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met altitude deviation : overshoot inflight encounter other non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On scheduled flight sep/mon/96, from burbank to las vegas we were given a descent to 12000 ft from FL270. We were flying the orejjo 3 arrival into vegas but due to the boulder VOR being OTS ZLA assigned us a heading of 035 degrees after 'danby' intersection. Los angeles wanted us to cross 40 DME out of vegas VOR at 12000 ft. We acknowledged but wrongly set 11000 ft on the FMS. After turning off the arrival we encountered moderate turbulence and our attention shifted toward passenger safety. The PA messages were given and the aircraft continued descent to the 'set' altitude of 11000 ft. ZLA queried our altitude and we read back 11000 ft. They said we had been assigned 12000 ft to which we replied if we should climb to 12000 ft. ZLA said that 11000 ft was no problem for them or for approach control. Continued at 11000 ft to an uneventful landing in vegas.
Original NASA ASRS Text
Title: MLG ACFT IN DSCNT SET WRONG ALT IN FMS AND DSNDED THROUGH THE ASSIGNED BY 1000 FT. TURB DISTRACTED FLC WITH PA ANNOUNCEMENTS.
Narrative: ON SCHEDULED FLT SEP/MON/96, FROM BURBANK TO LAS VEGAS WE WERE GIVEN A DSCNT TO 12000 FT FROM FL270. WE WERE FLYING THE OREJJO 3 ARR INTO VEGAS BUT DUE TO THE BOULDER VOR BEING OTS ZLA ASSIGNED US A HDG OF 035 DEGS AFTER 'DANBY' INTXN. LOS ANGELES WANTED US TO CROSS 40 DME OUT OF VEGAS VOR AT 12000 FT. WE ACKNOWLEDGED BUT WRONGLY SET 11000 FT ON THE FMS. AFTER TURNING OFF THE ARR WE ENCOUNTERED MODERATE TURB AND OUR ATTN SHIFTED TOWARD PAX SAFETY. THE PA MESSAGES WERE GIVEN AND THE ACFT CONTINUED DSCNT TO THE 'SET' ALT OF 11000 FT. ZLA QUERIED OUR ALT AND WE READ BACK 11000 FT. THEY SAID WE HAD BEEN ASSIGNED 12000 FT TO WHICH WE REPLIED IF WE SHOULD CLB TO 12000 FT. ZLA SAID THAT 11000 FT WAS NO PROB FOR THEM OR FOR APCH CTL. CONTINUED AT 11000 FT TO AN UNEVENTFUL LNDG IN VEGAS.
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.