NASA · Aviation Safety Reporting System
PC-12 Pilot reported the Propeller Heat System failed while climbing through icing conditions causing a temporary loss of control.
What is ASRS?
The Aviation Safety Reporting System is NASA's voluntary, confidential, non- punitive incident-reporting system, established 1976. Pilots, controllers, dispatchers, and maintenance technicians file reports describing safety- relevant events. NASA de-identifies every report before adding it to the public database. Reports are not investigated by NASA, the FAA, or the NTSB — they represent the reporter's perspective.
Pilot narrative
Verbatim from the de-identified NASA record. First-person account by the
reporter. NASA strips identifying details (names, company, specific time);
anonymization placeholders are ZZZ,
X, Y.
Flying from ZZZ to ZZZ1 the Propeller Heat System Failed. I was still climbing through a layer which appeared to top at about 24000 feet. I was assessing the warning and CAWS (Central Advisory and Warning System) indicating that the Prop Heat failed and following the QRH, when the autopilot began banking the aircraft to the right and nose down. I disconnected the autopilot and hit the trim interrupt switch to ensure to have full control over the aircraft. Once I was back straight and level, ATC inquired why we had descended and if we were okay. I was able to climb out of icing and proceeded back on course.
NASA classification — Anomalies
- Aircraft Equipment Problem
- Deviation - Altitude
- Deviation - Track / Heading
- Deviation / Discrepancy - Procedural
- Inflight Event / Encounter
NASA classification — Assessments
- Contributing Factors / Situations
- Aircraft · Weather
- Primary Problem
- Aircraft
ASRS reports are voluntarily submitted, de-identified by NASA, and represent the reporter's perspective. The presence of reports on a topic cannot be used to infer prevalence in the National Airspace System. The authoritative source is the NASA ASRS Database Online at asrs.arc.nasa.gov ↗.