NASA · Aviation Safety Reporting System
Eurocopter AS 350 pilot reported low battery voltage caused an engine over temperature on start. The engine start was discontinued and maintenance was notified.
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.
Batt V 23.2 prior to start, initiated start and Batt V dropped to 13.4V but recovered quickly through 14V. Continued scan of VEMD, T4 rising normally, oil pressure check, and when scanning back to Batt V, noticed T4 needle moving quickly. Moved start selector to OFF and immediately noted OVERLIMIT DETECTED on upper VEMD. Accessed Maintenance pages and noted T4 of 871'C. Batteries that are cycled through show good voltage on preflight / before start checks, but how they will respond to a starter load is an unknown. Future first flight of day starts during cold weather / cold aircraft will be Start Pak assisted.
NASA classification — Anomalies
- Aircraft Equipment Problem
- Deviation / Discrepancy - Procedural
NASA classification — Assessments
- Contributing Factors / Situations
- Aircraft · Human Factors · Procedure
- 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 ↗.