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Flight crew of an large transport overshot assigned cruise altitude due to overconcentrating on speed and autothrottles increase and missed noticing the aircraft's higher pitch attitude causing a climb. Captain was distraction making a PA announcement.
| Attributes | |
| ACN | 415428 |
| Time | |
| Date | 199809 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : lin |
| State Reference | CA |
| Altitude | msl bound lower : 29000 msl bound upper : 29350 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zoa |
| 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 |
| Route In Use | enroute airway : j84 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 12000 flight time type : 4000 |
| ASRS Report | 415428 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : flight engineer pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 6000 flight time type : 2000 |
| ASRS Report | 415430 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While leveling at cleared altitude (FL290) and hand flying airplane, autothrottles retarded from climb to cruise mode. After initial power reduction, throttles increased which pitched the nose up slightly. PF concentrated attention on throttles and power gauges and altitude increased to approximately FL293.5 when a correction was initiated. I was on the PA system with the passenger and should have been paying more attention to our altitude. The PF noticed the airplane still climbing about FL292 and started a smooth pushover back to FL290. Maximum altitude attained was FL293.5.
Original NASA ASRS Text
Title: FLC OF AN LGT OVERSHOT ASSIGNED CRUISE ALT DUE TO OVERCONCENTRATING ON SPD AND AUTOTHROTTLES INCREASE AND MISSED NOTICING THE ACFT'S HIGHER PITCH ATTITUDE CAUSING A CLB. CAPT WAS DISTR MAKING A PA ANNOUNCEMENT.
Narrative: WHILE LEVELING AT CLRED ALT (FL290) AND HAND FLYING AIRPLANE, AUTOTHROTTLES RETARDED FROM CLB TO CRUISE MODE. AFTER INITIAL PWR REDUCTION, THROTTLES INCREASED WHICH PITCHED THE NOSE UP SLIGHTLY. PF CONCENTRATED ATTN ON THROTTLES AND PWR GAUGES AND ALT INCREASED TO APPROX FL293.5 WHEN A CORRECTION WAS INITIATED. I WAS ON THE PA SYS WITH THE PAX AND SHOULD HAVE BEEN PAYING MORE ATTN TO OUR ALT. THE PF NOTICED THE AIRPLANE STILL CLBING ABOUT FL292 AND STARTED A SMOOTH PUSHOVER BACK TO FL290. MAX ALT ATTAINED WAS FL293.5.
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.