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A DA50 aircraft leaves its assigned altitude of FL310 while the student captain programs the VNAV function of the autoplt north of swl, md.
| Attributes | |
| ACN | 469680 |
| Time | |
| Date | 200004 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : swl.vortac |
| State Reference | MD |
| Altitude | msl bound lower : 31000 msl bound upper : 31800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Falcon 50 |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : level |
| Route In Use | enroute airway : j174.airway |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer instruction : instructor observation : company check pilot oversight : pic |
| Qualification | pilot : cfi pilot : flight engineer pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 30 flight time total : 10500 flight time type : 550 |
| ASRS Report | 469680 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : captain instruction : trainee |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : clearance other anomaly |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : regained aircraft control flight crew : returned to assigned altitude |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
DA50 in cruise FL310. New captain programming uns-1C VNAV function when autoplt engaged vertical climb mode and climbed 800 ft before a non negative 'G' maneuvering stop climb. No comment from center, no TCASII targets within 40 NM. Second occurrence of autoplt pitch up in less than 1 week. Maintenance bite check upon landing showed no fault codes. Returned to service.
Original NASA ASRS Text
Title: A DA50 ACFT LEAVES ITS ASSIGNED ALT OF FL310 WHILE THE STUDENT CAPT PROGRAMS THE VNAV FUNCTION OF THE AUTOPLT N OF SWL, MD.
Narrative: DA50 IN CRUISE FL310. NEW CAPT PROGRAMMING UNS-1C VNAV FUNCTION WHEN AUTOPLT ENGAGED VERT CLB MODE AND CLBED 800 FT BEFORE A NON NEGATIVE 'G' MANEUVERING STOP CLB. NO COMMENT FROM CTR, NO TCASII TARGETS WITHIN 40 NM. SECOND OCCURRENCE OF AUTOPLT PITCH UP IN LESS THAN 1 WK. MAINT BITE CHK UPON LNDG SHOWED NO FAULT CODES. RETURNED TO SVC.
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.