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A PA31 pilot temporarily lost control when the autopilot disconnected in turbulence and his noise canceling headset obscured the disconnect warning.
| Attributes | |
| ACN | 883248 |
| Time | |
| Date | 201004 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | PA-31 Navajo/Chieftan/Mojave/T1040 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Climb |
| Route In Use | Direct |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Autopilot |
| Person 1 | |
| Function | Captain Single Pilot |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor Flight Crew Flight Engineer |
| Experience | Flight Crew Last 90 Days 35 Flight Crew Total 17000 Flight Crew Type 100 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Deviation - Track / Heading All Types Inflight Event / Encounter Loss Of Aircraft Control |
Narrative:
ATC cleared us on course and to climb to 10000 ft. Light to moderate turbulence caused the autopilot to disconnect. Aircraft turned right about 60 degrees and descended 300-500 ft before I could recover. ATC advised we need to turn back to the the northwest. Correction made no conflict noted. Contributing factor: noise canceling headset blocked the autopilot disconnect alarm.
Original NASA ASRS Text
Title: A PA31 pilot temporarily lost control when the autopilot disconnected in turbulence and his noise canceling headset obscured the disconnect warning.
Narrative: ATC cleared us on course and to climb to 10000 FT. Light to moderate turbulence caused the autopilot to disconnect. Aircraft turned right about 60 degrees and descended 300-500 FT before I could recover. ATC advised we need to turn back to the the northwest. Correction made no conflict noted. Contributing factor: Noise canceling headset blocked the autopilot disconnect alarm.
Data retrieved from NASA's ASRS site as of April 2012 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.