 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Air carrier widebody transport in cruise at FL310 receives instructions for immediate climb, then immediate descent, overshoots altitude.
| Attributes | |
| ACN | 141190 |
| Time | |
| Date | 199003 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : fak |
| State Reference | VA |
| Altitude | msl bound lower : 30500 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 20000 flight time type : 2000 |
| ASRS Report | 141190 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : overshoot conflict : airborne less severe non adherence : required legal separation non adherence : clearance |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : overcame equipment problem other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation Operational Error |
Narrative:
While at cruise at FL310, ATC advised of traffic conflict and requested immediate climb to FL350 with right to 050 degree from 360 degree. Passing FL333, ATC requested immediate descent to 310 in very strong tone which implied a dangerous situation. Idle descent with high rate of drift down resulted in overshooting my altitude of 310 by 500', recovered 30500 to 310 immediately.
Original NASA ASRS Text
Title: ACR WDB IN CRUISE AT FL310 RECEIVES INSTRUCTIONS FOR IMMEDIATE CLIMB, THEN IMMEDIATE DESCENT, OVERSHOOTS ALT.
Narrative: WHILE AT CRUISE AT FL310, ATC ADVISED OF TFC CONFLICT AND REQUESTED IMMEDIATE CLIMB TO FL350 WITH RIGHT TO 050 DEG FROM 360 DEG. PASSING FL333, ATC REQUESTED IMMEDIATE DSCNT TO 310 IN VERY STRONG TONE WHICH IMPLIED A DANGEROUS SITUATION. IDLE DSCNT WITH HIGH RATE OF DRIFT DOWN RESULTED IN OVERSHOOTING MY ALT OF 310 BY 500', RECOVERED 30500 TO 310 IMMEDIATELY.
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.