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Air carrier medium large transport first officer new to type and advanced cockpit programs FMS with autoplt engaged. Autoplt fails to capture altitude and altitude deviation of 400' ensues.
| Attributes | |
| ACN | 130782 |
| Time | |
| Date | 198912 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 10000 msl bound upper : 10400 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure sid : sid |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : private pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 225 flight time total : 5000 flight time type : 225 |
| ASRS Report | 130782 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude 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:
I leveled off at 10000' MSL, heading 260 degrees, to intercept the 274 degree right outbnd from dfw. I had autothrottles on and VNAV selected. The aircraft was trimmed and altitude armed on FGS. VNAV level was enunciated. I placed autoplt on and in accordance with FAA policy began to program LNAV to intercept the route segment. The aircraft began a climb to 10400' before I noticed it and returned to 10000'. I disconnected the autoplt and attempted the sequence again. The aircraft would not hold altitude and at this time the airspeed began increasing. The system was written up. I think that the FAA's policy of requiring the PF to program the computer (FMS) while on autoplt is ridiculous. The PF should direct any actions he wishes as part of technique.
Original NASA ASRS Text
Title: ACR MLG FO NEW TO TYPE AND ADVANCED COCKPIT PROGRAMS FMS WITH AUTOPLT ENGAGED. AUTOPLT FAILS TO CAPTURE ALT AND ALT DEVIATION OF 400' ENSUES.
Narrative: I LEVELED OFF AT 10000' MSL, HDG 260 DEGS, TO INTERCEPT THE 274 DEG R OUTBND FROM DFW. I HAD AUTOTHROTTLES ON AND VNAV SELECTED. THE ACFT WAS TRIMMED AND ALT ARMED ON FGS. VNAV LEVEL WAS ENUNCIATED. I PLACED AUTOPLT ON AND IN ACCORDANCE WITH FAA POLICY BEGAN TO PROGRAM LNAV TO INTERCEPT THE ROUTE SEGMENT. THE ACFT BEGAN A CLB TO 10400' BEFORE I NOTICED IT AND RETURNED TO 10000'. I DISCONNECTED THE AUTOPLT AND ATTEMPTED THE SEQUENCE AGAIN. THE ACFT WOULD NOT HOLD ALT AND AT THIS TIME THE AIRSPD BEGAN INCREASING. THE SYS WAS WRITTEN UP. I THINK THAT THE FAA'S POLICY OF REQUIRING THE PF TO PROGRAM THE COMPUTER (FMS) WHILE ON AUTOPLT IS RIDICULOUS. THE PF SHOULD DIRECT ANY ACTIONS HE WISHES AS PART OF TECHNIQUE.
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.