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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Altitude deviation.
| Attributes | |
| ACN | 298696 |
| Time | |
| Date | 199503 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : yyc |
| State Reference | AB |
| Altitude | msl bound lower : 37700 msl bound upper : 39000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : czeg artcc : zfw |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time total : 23000 |
| ASRS Report | 298696 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter : weather non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | none taken : unable other |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Mountain wave, standing wave on the east ridge of the canadian rockies near banff -- caused airspeed to mach .87. Altitude dropped to FL377 before aircraft returned to FL390. Autoplt taken off -- high speed buffet. No secondary wave. Reported WX and altitude deviation to edmonton center.
Original NASA ASRS Text
Title: ALTDEV.
Narrative: MOUNTAIN WAVE, STANDING WAVE ON THE E RIDGE OF THE CANADIAN ROCKIES NEAR BANFF -- CAUSED AIRSPD TO MACH .87. ALT DROPPED TO FL377 BEFORE ACFT RETURNED TO FL390. AUTOPLT TAKEN OFF -- HIGH SPD BUFFET. NO SECONDARY WAVE. RPTED WX AND ALTDEV TO EDMONTON CTR.
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.