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Medium large transport flight cleared to descend to FL260 on expedited descent at FL283 descending 4000 FPM next controller cleared the flight to FL280. Flight overshot and recovered to FL280.
| Attributes | |
| ACN | 117307 |
| Time | |
| Date | 198907 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : fam |
| State Reference | MO |
| Altitude | msl bound lower : 27600 msl bound upper : 28000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zkc tower : stl |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | cruise other descent 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 : 180 flight time total : 7000 flight time type : 3000 |
| ASRS Report | 117307 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Intra Facility Coordination Failure |
Narrative:
Encountering continuous light chop at FL310, we requested a descent from kansas city center (132.37). The controller cleared us to descend and maintain FL260. About a minute later, we were cleared to expedite thru FL280 and contact next sector controller on 134.42. The first officer who was flying immediately increased the rate of descent. Upon initial contact with the new controller, he issued a clearance to maintain FL280. At that time, we were in a 4000 FPM descent and passing FL283. We immediately began level off but due to our rate of descent we went thru FL280 by 400' down to FL276. We immediately climbed back to FL280. Lack of coordination between the 2 sector controllers set up this altitude deviation. As in most cases, the few extra seconds to coordinate between controllers, controllers and pilots would prevent many of our problems. In this particular incident, a contributing factor was the frequency change. We should have been given the frequency change prior to the expedite clearance.
Original NASA ASRS Text
Title: MLG FLT CLEARED TO DESCEND TO FL260 ON EXPEDITED DESCENT AT FL283 DESCENDING 4000 FPM NEXT CTLR CLEARED THE FLT TO FL280. FLT OVERSHOT AND RECOVERED TO FL280.
Narrative: ENCOUNTERING CONTINUOUS LIGHT CHOP AT FL310, WE REQUESTED A DSCNT FROM KANSAS CITY CENTER (132.37). THE CTLR CLRED US TO DSND AND MAINTAIN FL260. ABOUT A MINUTE LATER, WE WERE CLRED TO EXPEDITE THRU FL280 AND CONTACT NEXT SECTOR CTLR ON 134.42. THE FO WHO WAS FLYING IMMEDIATELY INCREASED THE RATE OF DSCNT. UPON INITIAL CONTACT WITH THE NEW CTLR, HE ISSUED A CLRNC TO MAINTAIN FL280. AT THAT TIME, WE WERE IN A 4000 FPM DSCNT AND PASSING FL283. WE IMMEDIATELY BEGAN LEVEL OFF BUT DUE TO OUR RATE OF DSCNT WE WENT THRU FL280 BY 400' DOWN TO FL276. WE IMMEDIATELY CLIMBED BACK TO FL280. LACK OF COORD BETWEEN THE 2 SECTOR CTLRS SET UP THIS ALTDEV. AS IN MOST CASES, THE FEW EXTRA SECONDS TO COORDINATE BETWEEN CTLRS, CTLRS AND PLTS WOULD PREVENT MANY OF OUR PROBLEMS. IN THIS PARTICULAR INCIDENT, A CONTRIBUTING FACTOR WAS THE FREQ CHANGE. WE SHOULD HAVE BEEN GIVEN THE FREQ CHANGE PRIOR TO THE EXPEDITE CLRNC.
Data retrieved from NASA's ASRS site as of August 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.