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Large transport freighter aircraft in cruise, reporter captain believes he can demonstrate CAT III status of aircraft, selects 'land' and #2 autoplt on. Aircraft pitches down at 2000 FPM. PF first officer disconnects autoplt and returns to assigned altitude.
| Attributes | |
| ACN | 395487 |
| Time | |
| Date | 199802 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : zjx |
| State Reference | FL |
| Altitude | msl bound lower : 30850 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zjx |
| 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 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 : 20 flight time total : 9000 flight time type : 300 |
| ASRS Report | 395498 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| 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:
To illustrate that the CAT III status of the aircraft can be checked in cruise, I selected 'land' and the second autoplt on. The aircraft pitched down (at 2000 FPM). The first officer disconnected the autoplts and climbed to FL310. Altitude loss approximately 150 ft. ATC did not call us and we did not call ATC.
Original NASA ASRS Text
Title: LGT FREIGHTER ACFT IN CRUISE, RPTR CAPT BELIEVES HE CAN DEMONSTRATE CAT III STATUS OF ACFT, SELECTS 'LAND' AND #2 AUTOPLT ON. ACFT PITCHES DOWN AT 2000 FPM. PF FO DISCONNECTS AUTOPLT AND RETURNS TO ASSIGNED ALT.
Narrative: TO ILLUSTRATE THAT THE CAT III STATUS OF THE ACFT CAN BE CHKED IN CRUISE, I SELECTED 'LAND' AND THE SECOND AUTOPLT ON. THE ACFT PITCHED DOWN (AT 2000 FPM). THE FO DISCONNECTED THE AUTOPLTS AND CLBED TO FL310. ALT LOSS APPROX 150 FT. ATC DID NOT CALL US AND WE DID NOT CALL ATC.
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.