SDR EVCA202607011

Service difficulty report · Warning Light · Bell 407

Difficulty date: July 1, 2026
Submitted: July 8, 2026
Operation: General aviation
Aircraft: N728AE
Make and model: Bell 407
Aircraft serial: 53571
Aircraft time: 9,886 hours, 40,738 cycles
Engine: Allsn 250C47B
Engine time: 3,934 hours, 9,247 cycles
System (JASC): 6300 · Main Rotor Drive System
Part: Warning Light
Condition: False Activation
Location: Chip Detector
Stage of operation: CL
How discovered: O
Nature of condition: N
Precautionary procedure: A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DEPARTED HOSPITAL, XSMN CHIP LIGHT ILLUMINATED APPROX 2 MIN AFTER DEPARTURE. ABORTED FLIGHT, CONDUCTED PRECAUTIONARY EMERGENCY LANDING AT AIRPORT. REMOVED AND INSPECTED UPPER AND LOWER TRANS AND FREE WHEELING CHIP DETECTORS, REMOVED AND CHECKED FILTER, AND FOUND NO INDICATION OF CONTAMINATION. CLEANED ALL ELECTRICAL PLUGS. PERFORMED 20 MINUTE GROUND RUN AND COULD NOT DUPLICATE, AIRCRAFT RETURNED TO SERVICE, ALL WORK IAW BHT 407 MM CH. 63

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