NASA · Aviation Safety Reporting System
PC-12 Captain reported a temporary propeller vibration during cruise while in icing conditions. The flight crew decided to divert due to degraded aircraft performance..
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.
During cruise at FL250 en route from ZZZ to ZZZ1, with visible ice on the airframe, a rough propeller vibration occurred with no associated CAS messages. All de ice and anti ice systems in the aircraft were working perfectly and keeping up with the ice accretion. Different power settings did not minimize the vibration and it lasted for approximately 2 minutes. Power and performance was degraded and the crew worked together on the issue and decided to descend and divert to ZZZ2 where we safely landed the aircraft.
NASA classification — Anomalies
- Aircraft Equipment Problem
- Deviation / Discrepancy - Procedural
- Inflight Event / Encounter
NASA classification — Assessments
- Contributing Factors / Situations
- Aircraft · Human Factors · 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 ↗.