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MD83 first officer experiences autopilot and autothrottle failures during climb along with most DFGS functions. The crew elects to divert to a suitable airport due to weather at the departure airport. The landing gear fails to extend normally when selected down and a go-around ensues. Emergency gear extension procedures are successful followed by a normal landing.
| Attributes | |
| ACN | 1171934 |
| Time | |
| Date | 201405 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | IMC |
| Aircraft 1 | |
| Make Model Name | MD-83 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Autoflight System |
| Person 1 | |
| Function | First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
During climb autopilot and autothrottle both failed. Most DFGS functions froze. Only heading bug and VHF nav could be used. Aircraft began uncommanded yaw oscillations. Elected not to return due to IFR field conditions; approaching convective weather from the west. Selected ZZZ as the best divert airport for weather conditions; runway length. Upon arrival at ZZZ selected landing gear down but got only 3 red gear indications. Conducted go around. Made emergency gear extension and got 3 green gear lights. Remained in a VFR pattern and returned for landing. Stopped on runway. Maintenance installed gear safety pins and towed the aircraft to the gate.
Original NASA ASRS Text
Title: MD83 First Officer experiences autopilot and autothrottle failures during climb along with most DFGS functions. The crew elects to divert to a suitable airport due to weather at the departure airport. The landing gear fails to extend normally when selected down and a go-around ensues. Emergency gear extension procedures are successful followed by a normal landing.
Narrative: During climb autopilot and autothrottle both failed. Most DFGS functions froze. Only heading bug and VHF Nav could be used. Aircraft began uncommanded yaw oscillations. Elected not to return due to IFR field conditions; approaching convective weather from the west. Selected ZZZ as the best divert airport for weather conditions; runway length. Upon arrival at ZZZ selected landing gear down but got only 3 red gear indications. Conducted go around. Made emergency gear extension and got 3 green gear lights. Remained in a VFR pattern and returned for landing. Stopped on runway. Maintenance installed gear safety pins and towed the aircraft to the gate.
Data retrieved from NASA's ASRS site 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.