Eurocopter AS 350/355/EC130 - Astar/Twinstar/Ecureuil
Flight Crew Commercial; Flight Crew Instrument
Situational Awareness; Troubleshooting
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
General Flight Cancelled / Delayed; General Maintenance Action
Aircraft; Human Factors; Procedure
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.
Eurocopter AS 350 pilot reported low battery voltage caused an engine over temperature on start. The engine start was discontinued and maintenance was notified.