 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Flight crew of an A320 failed to comply with a crossing restr during a VNAV descent in tailwinds, and through cloud buildups with associated turbulence. Altitude crossing restr.
| Attributes | |
| ACN | 322360 |
| Time | |
| Date | 199512 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : etg |
| State Reference | PA |
| Altitude | msl bound lower : 28000 msl bound upper : 28450 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny tower : mco |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 154 flight time total : 15435 flight time type : 3285 |
| ASRS Report | 322360 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While on a VNAV descent, the strong tailwinds decreased over a short period of time. We also entered cloud buildups which required us to slow up due to turbulence. Even with full spoilers extended, we missed the crossing restr by 450 ft. ATC was advised we would be high, to which he replied 'roger.'
Original NASA ASRS Text
Title: FLC OF AN A320 FAILED TO COMPLY WITH A XING RESTR DURING A VNAV DSCNT IN TAILWINDS, AND THROUGH CLOUD BUILDUPS WITH ASSOCIATED TURB. ALT XING RESTR.
Narrative: WHILE ON A VNAV DSCNT, THE STRONG TAILWINDS DECREASED OVER A SHORT PERIOD OF TIME. WE ALSO ENTERED CLOUD BUILDUPS WHICH REQUIRED US TO SLOW UP DUE TO TURB. EVEN WITH FULL SPOILERS EXTENDED, WE MISSED THE XING RESTR BY 450 FT. ATC WAS ADVISED WE WOULD BE HIGH, TO WHICH HE REPLIED 'ROGER.'
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.