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An A320 failed to maintain GS during descent after autocapture after the PIC programmed an airspeed increase.
| Attributes | |
| ACN | 425880 |
| Time | |
| Date | 199901 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ord |
| State Reference | IL |
| Altitude | msl bound lower : 7000 msl bound upper : 8000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Navigation In Use | Other |
| Route In Use | approach : straight in arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 200 flight time total : 4500 flight time type : 100 |
| ASRS Report | 425880 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
ATC clearance: cross fnuch at or above 7000 ft, cleared ILS runway 22R. Aircraft: A320 with autoflt on autoplt #1, and autothrottles. Event: aircraft captured GS and began descent. The captain increased airspeed from 220 KTS to 250 KTS. Engines spooled up, and airspeed increased. First officer noticed aircraft departing the GS and starting a climb. First officer alerted the captain, and the captain disengaged the autoplt and autothrottle, and returned the aircraft to the GS.
Original NASA ASRS Text
Title: AN A320 FAILED TO MAINTAIN GS DURING DSCNT AFTER AUTOCAPTURE AFTER THE PIC PROGRAMMED AN AIRSPD INCREASE.
Narrative: ATC CLRNC: CROSS FNUCH AT OR ABOVE 7000 FT, CLRED ILS RWY 22R. ACFT: A320 WITH AUTOFLT ON AUTOPLT #1, AND AUTOTHROTTLES. EVENT: ACFT CAPTURED GS AND BEGAN DSCNT. THE CAPT INCREASED AIRSPD FROM 220 KTS TO 250 KTS. ENGS SPOOLED UP, AND AIRSPD INCREASED. FO NOTICED ACFT DEPARTING THE GS AND STARTING A CLB. FO ALERTED THE CAPT, AND THE CAPT DISENGAGED THE AUTOPLT AND AUTOTHROTTLE, AND RETURNED THE ACFT TO THE GS.
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.