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B767-300 flight crew reported that during initial climb autopilot stuck in altitude hold mode. After troubleshooting flight crew was able to regain control and flight resumed uneventfully.
| Attributes | |
| ACN | 1616067 |
| Time | |
| Date | 201902 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | IMC |
| Aircraft 1 | |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Commercial Flight Crew Multiengine Flight Crew Instrument |
| Person 2 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Instrument Flight Crew Commercial Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Altitude Undershoot Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Speed All Types |
Narrative:
On initial climb leveling at 5;000 feet then cleared to 13;000 feet. Autopilot was engaged. Autopilot was in VNAV altitude. When cleared to 13;000; aircraft was stuck in altitude hold. Speed began to increase rapidly. Captain was pilot flying. I called airspeed out. Nothing he did would bring the autopilot out of altitude hold. He disconnected the autopilot. Speed was about 285 knots. He increased pitch and corrected airspeed. I noticed that speed window was open and indicating 148 knots. I suggested cycling flight director switches to reset MCP. This was successful and we re-automated. Flight was normal following this correction.
Original NASA ASRS Text
Title: B767-300 flight crew reported that during initial climb autopilot stuck in Altitude Hold Mode. After troubleshooting flight crew was able to regain control and flight resumed uneventfully.
Narrative: On initial climb leveling at 5;000 feet then cleared to 13;000 feet. Autopilot was engaged. Autopilot was in VNAV ALT. When cleared to 13;000; aircraft was stuck in ALT HOLD. Speed began to increase rapidly. Captain was pilot flying. I called airspeed out. Nothing he did would bring the autopilot out of ALT HOLD. He disconnected the autopilot. Speed was about 285 knots. He increased pitch and corrected airspeed. I noticed that speed window was open and indicating 148 knots. I suggested cycling flight director switches to reset MCP. This was successful and we re-automated. Flight was normal following this correction.
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.